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 <span id="projectnumber">0.12.2.1</span>
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<a href="spendfrom_8py.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"><a class="line" href="namespacespendfrom.html"> 1</a></span> <span class="comment">#!/usr/bin/env python</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">#</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"># Use the raw transactions API to spend dashs received on particular addresses,</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"># and send any change back to that same address.</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">#</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"># Example usage:</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"># spendfrom.py # Lists available funds</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"># spendfrom.py --from=ADDRESS --to=ADDRESS --amount=11.00</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">#</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"># Assumes it will talk to a dashd or Dash-Qt running</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"># on localhost.</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">#</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"># Depends on jsonrpc</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">#</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">from</span> decimal <span class="keyword">import</span> *</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">import</span> getpass</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">import</span> math</div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">import</span> os</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">import</span> os.path</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">import</span> platform</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">import</span> sys</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">import</span> time</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">from</span> jsonrpc <span class="keyword">import</span> ServiceProxy, json</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div><div class="line"><a name="l00026"></a><span class="lineno"><a class="line" href="namespacespendfrom.html#a9677b4bc9bbc60314e3946ff88161f18"> 26</a></span> BASE_FEE=Decimal(<span class="stringliteral">"0.001"</span>)</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div><div class="line"><a name="l00028"></a><span class="lineno"><a class="line" href="namespacespendfrom.html#a053eb1296d2298579e23dea1554c4366"> 28</a></span> <span class="keyword">def </span><a class="code" href="namespacespendfrom.html#a053eb1296d2298579e23dea1554c4366">check_json_precision</a>():</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="stringliteral">"""Make sure json library being used does not lose precision converting BTC values"""</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  n = Decimal(<span class="stringliteral">"20000000.00000003"</span>)</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  satoshis = int(json.loads(json.dumps(float(n)))*1.0e8)</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keywordflow">if</span> satoshis != 2000000000000003:</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keywordflow">raise</span> RuntimeError(<span class="stringliteral">"JSON encode/decode loses precision"</span>)</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div><div class="line"><a name="l00035"></a><span class="lineno"><a class="line" href="namespacespendfrom.html#a76a7cd0e02f603a6b34e738c11281827"> 35</a></span> <span class="keyword">def </span><a class="code" href="namespacespendfrom.html#a76a7cd0e02f603a6b34e738c11281827">determine_db_dir</a>():</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="stringliteral">"""Return the default location of the Dash Core data directory"""</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keywordflow">if</span> platform.system() == <span class="stringliteral">"Darwin"</span>:</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordflow">return</span> os.path.expanduser(<span class="stringliteral">"~/Library/Application Support/DashCore/"</span>)</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordflow">elif</span> platform.system() == <span class="stringliteral">"Windows"</span>:</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordflow">return</span> os.path.join(os.environ[<span class="stringliteral">'APPDATA'</span>], <span class="stringliteral">"DashCore"</span>)</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordflow">return</span> os.path.expanduser(<span class="stringliteral">"~/.dashcore"</span>)</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div><div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="namespacespendfrom.html#a8bfba3975f0fc5ffb03017fca87d6070"> 43</a></span> <span class="keyword">def </span><a class="code" href="namespacespendfrom.html#a8bfba3975f0fc5ffb03017fca87d6070">read_bitcoin_config</a>(dbdir):</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="stringliteral">"""Read the dash.conf file from dbdir, returns dictionary of settings"""</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keyword">from</span> ConfigParser <span class="keyword">import</span> SafeConfigParser</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keyword">class </span>FakeSecHead(object):</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">def </span>__init__(self, fp):</div><div class="line"><a name="l00049"></a><span class="lineno"><a class="line" href="namespacespendfrom.html#a9e57d4fecd09c4467b9f2c08d1f9d1a9"> 49</a></span>  self.fp = fp</div><div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="namespacespendfrom.html#a7ae421077a774c92e17da464db590bf8"> 50</a></span>  self.sechead = <span class="stringliteral">'[all]\n'</span></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">def </span>readline(self):</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">if</span> self.sechead:</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">try</span>: <span class="keywordflow">return</span> self.sechead</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">finally</span>: self.sechead = <span class="keywordtype">None</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">else</span>:</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  s = self.fp.readline()</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">if</span> s.find(<span class="stringliteral">'#'</span>) != -1:</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  s = s[0:s.find(<span class="stringliteral">'#'</span>)].strip() +<span class="stringliteral">"\n"</span></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">return</span> s</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  config_parser = SafeConfigParser()</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  config_parser.readfp(FakeSecHead(open(os.path.join(dbdir, <span class="stringliteral">"dash.conf"</span>))))</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">return</span> dict(config_parser.items(<span class="stringliteral">"all"</span>))</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div><div class="line"><a name="l00065"></a><span class="lineno"><a class="line" href="namespacespendfrom.html#a8c28ff8f5293c9f2705fb16dfe758b06"> 65</a></span> <span class="keyword">def </span><a class="code" href="namespacespendfrom.html#a8c28ff8f5293c9f2705fb16dfe758b06">connect_JSON</a>(config):</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="stringliteral">"""Connect to a Dash Core JSON-RPC server"""</span></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  testnet = config.get(<span class="stringliteral">'testnet'</span>, <span class="stringliteral">'0'</span>)</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  testnet = (int(testnet) > 0) <span class="comment"># 0/1 in config file, convert to True/False</span></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">if</span> <span class="keywordflow">not</span> <span class="stringliteral">'rpcport'</span> <span class="keywordflow">in</span> config:</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  config[<span class="stringliteral">'rpcport'</span>] = 19998 <span class="keywordflow">if</span> testnet <span class="keywordflow">else</span> 9998</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  connect = <span class="stringliteral">"http://%s:%s@127.0.0.1:%s"</span>%(config[<span class="stringliteral">'rpcuser'</span>], config[<span class="stringliteral">'rpcpassword'</span>], config[<span class="stringliteral">'rpcport'</span>])</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">try</span>:</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  result = ServiceProxy(connect)</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="comment"># ServiceProxy is lazy-connect, so send an RPC command mostly to catch connection errors,</span></div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="comment"># but also make sure the dashd we're talking to is/isn't testnet:</span></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">if</span> result.getmininginfo()[<span class="stringliteral">'testnet'</span>] != testnet:</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  sys.stderr.write(<span class="stringliteral">"RPC server at "</span>+connect+<span class="stringliteral">" testnet setting mismatch\n"</span>)</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  sys.exit(1)</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">return</span> result</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">except</span>:</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  sys.stderr.write(<span class="stringliteral">"Error connecting to RPC server at "</span>+connect+<span class="stringliteral">"\n"</span>)</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  sys.exit(1)</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div><div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="namespacespendfrom.html#a0bd685173bd4cdc922a55b4ee160270a"> 84</a></span> <span class="keyword">def </span><a class="code" href="namespacespendfrom.html#a0bd685173bd4cdc922a55b4ee160270a">unlock_wallet</a>(dashd):</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  info = dashd.getinfo()</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">if</span> <span class="stringliteral">'unlocked_until'</span> <span class="keywordflow">not</span> <span class="keywordflow">in</span> info:</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">return</span> <span class="keyword">True</span> <span class="comment"># wallet is not encrypted</span></div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  t = int(info[<span class="stringliteral">'unlocked_until'</span>])</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">if</span> t <= time.time():</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">try</span>:</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  passphrase = getpass.getpass(<span class="stringliteral">"Wallet is locked; enter passphrase: "</span>)</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  dashd.walletpassphrase(passphrase, 5)</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">except</span>:</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  sys.stderr.write(<span class="stringliteral">"Wrong passphrase\n"</span>)</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  info = dashd.getinfo()</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">return</span> int(info[<span class="stringliteral">'unlocked_until'</span>]) > time.time()</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div><div class="line"><a name="l00099"></a><span class="lineno"><a class="line" href="namespacespendfrom.html#aaf7d6465a697829e270ae02569e1e998"> 99</a></span> <span class="keyword">def </span><a class="code" href="namespacespendfrom.html#aaf7d6465a697829e270ae02569e1e998">list_available</a>(dashd):</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  address_summary = dict()</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  address_to_account = dict()</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">for</span> info <span class="keywordflow">in</span> dashd.listreceivedbyaddress(0):</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  address_to_account[info[<span class="stringliteral">"address"</span>]] = info[<span class="stringliteral">"account"</span>]</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  unspent = dashd.listunspent(0)</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">for</span> output <span class="keywordflow">in</span> unspent:</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="comment"># listunspent doesn't give addresses, so:</span></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  rawtx = dashd.getrawtransaction(output[<span class="stringliteral">'txid'</span>], 1)</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  vout = rawtx[<span class="stringliteral">"vout"</span>][output[<span class="stringliteral">'vout'</span>]]</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  pk = vout[<span class="stringliteral">"scriptPubKey"</span>]</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="comment"># This code only deals with ordinary pay-to-dash-address</span></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="comment"># or pay-to-script-hash outputs right now; anything exotic is ignored.</span></div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">if</span> pk[<span class="stringliteral">"type"</span>] != <span class="stringliteral">"pubkeyhash"</span> <span class="keywordflow">and</span> pk[<span class="stringliteral">"type"</span>] != <span class="stringliteral">"scripthash"</span>:</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">continue</span></div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  address = pk[<span class="stringliteral">"addresses"</span>][0]</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordflow">if</span> address <span class="keywordflow">in</span> address_summary:</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  address_summary[address][<span class="stringliteral">"total"</span>] += vout[<span class="stringliteral">"value"</span>]</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  address_summary[address][<span class="stringliteral">"outputs"</span>].append(output)</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">else</span>:</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  address_summary[address] = {</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="stringliteral">"total"</span> : vout[<span class="stringliteral">"value"</span>],</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="stringliteral">"outputs"</span> : [output],</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="stringliteral">"account"</span> : address_to_account.get(address, <span class="stringliteral">""</span>)</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  }</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> </div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordflow">return</span> address_summary</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div><div class="line"><a name="l00131"></a><span class="lineno"><a class="line" href="namespacespendfrom.html#abb1ca8afec3b2f6724d1c88a9e95f811"> 131</a></span> <span class="keyword">def </span><a class="code" href="namespacespendfrom.html#abb1ca8afec3b2f6724d1c88a9e95f811">select_coins</a>(needed, inputs):</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="comment"># Feel free to improve this, this is good enough for my simple needs:</span></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  outputs = []</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  have = Decimal(<span class="stringliteral">"0.0"</span>)</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  n = 0</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">while</span> have < needed <span class="keywordflow">and</span> n < len(inputs):</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  outputs.append({ <span class="stringliteral">"txid"</span>:inputs[n][<span class="stringliteral">"txid"</span>], <span class="stringliteral">"vout"</span>:inputs[n][<span class="stringliteral">"vout"</span>]})</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  have += inputs[n][<span class="stringliteral">"amount"</span>]</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  n += 1</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordflow">return</span> (outputs, have-needed)</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span> </div><div class="line"><a name="l00142"></a><span class="lineno"><a class="line" href="namespacespendfrom.html#a02823764c491134bd191101b9b0ed951"> 142</a></span> <span class="keyword">def </span><a class="code" href="namespacespendfrom.html#a02823764c491134bd191101b9b0ed951">create_tx</a>(dashd, fromaddresses, toaddress, amount, fee):</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  all_coins = <a class="code" href="namespacespendfrom.html#aaf7d6465a697829e270ae02569e1e998">list_available</a>(dashd)</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  total_available = Decimal(<span class="stringliteral">"0.0"</span>)</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  needed = amount+fee</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  potential_inputs = []</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">for</span> addr <span class="keywordflow">in</span> fromaddresses:</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordflow">if</span> addr <span class="keywordflow">not</span> <span class="keywordflow">in</span> all_coins:</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">continue</span></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  potential_inputs.extend(all_coins[addr][<span class="stringliteral">"outputs"</span>])</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  total_available += all_coins[addr][<span class="stringliteral">"total"</span>]</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span> </div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">if</span> total_available < needed:</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  sys.stderr.write(<span class="stringliteral">"Error, only %f BTC available, need %f\n"</span>%(total_available, needed));</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  sys.exit(1)</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span> </div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="comment">#</span></div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="comment"># Note:</span></div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="comment"># Python's json/jsonrpc modules have inconsistent support for Decimal numbers.</span></div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="comment"># Instead of wrestling with getting json.dumps() (used by jsonrpc) to encode</span></div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="comment"># Decimals, I'm casting amounts to float before sending them to dashd.</span></div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="comment">#</span></div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  outputs = { toaddress : float(amount) }</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  (inputs, change_amount) = <a class="code" href="namespacespendfrom.html#abb1ca8afec3b2f6724d1c88a9e95f811">select_coins</a>(needed, potential_inputs)</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordflow">if</span> change_amount > BASE_FEE: <span class="comment"># don't bother with zero or tiny change</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  change_address = fromaddresses[-1]</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordflow">if</span> change_address <span class="keywordflow">in</span> outputs:</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  outputs[change_address] += float(change_amount)</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordflow">else</span>:</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  outputs[change_address] = float(change_amount)</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span> </div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  rawtx = dashd.createrawtransaction(inputs, outputs)</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  signed_rawtx = dashd.signrawtransaction(rawtx)</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">if</span> <span class="keywordflow">not</span> signed_rawtx[<span class="stringliteral">"complete"</span>]:</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  sys.stderr.write(<span class="stringliteral">"signrawtransaction failed\n"</span>)</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  sys.exit(1)</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  txdata = signed_rawtx[<span class="stringliteral">"hex"</span>]</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span> </div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">return</span> txdata</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span> </div><div class="line"><a name="l00182"></a><span class="lineno"><a class="line" href="namespacespendfrom.html#aafc7d92183882a448bf53f9b8ec96b6b"> 182</a></span> <span class="keyword">def </span><a class="code" href="namespacespendfrom.html#aafc7d92183882a448bf53f9b8ec96b6b">compute_amount_in</a>(dashd, txinfo):</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  result = Decimal(<span class="stringliteral">"0.0"</span>)</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">for</span> vin <span class="keywordflow">in</span> txinfo[<span class="stringliteral">'vin'</span>]:</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  in_info = dashd.getrawtransaction(vin[<span class="stringliteral">'txid'</span>], 1)</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  vout = in_info[<span class="stringliteral">'vout'</span>][vin[<span class="stringliteral">'vout'</span>]]</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  result = result + vout[<span class="stringliteral">'value'</span>]</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">return</span> result</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span> </div><div class="line"><a name="l00190"></a><span class="lineno"><a class="line" href="namespacespendfrom.html#aa41965a962604157ab740b80559d7edd"> 190</a></span> <span class="keyword">def </span><a class="code" href="namespacespendfrom.html#aa41965a962604157ab740b80559d7edd">compute_amount_out</a>(txinfo):</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  result = Decimal(<span class="stringliteral">"0.0"</span>)</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">for</span> vout <span class="keywordflow">in</span> txinfo[<span class="stringliteral">'vout'</span>]:</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  result = result + vout[<span class="stringliteral">'value'</span>]</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">return</span> result</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span> </div><div class="line"><a name="l00196"></a><span class="lineno"><a class="line" href="namespacespendfrom.html#a1aeba0ede6497a97fb9bdd502ec3672e"> 196</a></span> <span class="keyword">def </span><a class="code" href="namespacespendfrom.html#a1aeba0ede6497a97fb9bdd502ec3672e">sanity_test_fee</a>(dashd, txdata_hex, max_fee):</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keyword">class </span>FeeError(RuntimeError):</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">pass</span></div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordflow">try</span>:</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  txinfo = dashd.decoderawtransaction(txdata_hex)</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  total_in = <a class="code" href="namespacespendfrom.html#aafc7d92183882a448bf53f9b8ec96b6b">compute_amount_in</a>(dashd, txinfo)</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  total_out = <a class="code" href="namespacespendfrom.html#aa41965a962604157ab740b80559d7edd">compute_amount_out</a>(txinfo)</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordflow">if</span> total_in-total_out > max_fee:</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">raise</span> FeeError(<span class="stringliteral">"Rejecting transaction, unreasonable fee of "</span>+str(total_in-total_out))</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span> </div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  tx_size = len(txdata_hex)/2</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  kb = tx_size/1000 <span class="comment"># integer division rounds down</span></div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keywordflow">if</span> kb > 1 <span class="keywordflow">and</span> fee < BASE_FEE:</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordflow">raise</span> FeeError(<span class="stringliteral">"Rejecting no-fee transaction, larger than 1000 bytes"</span>)</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordflow">if</span> total_in < 0.01 <span class="keywordflow">and</span> fee < BASE_FEE:</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">raise</span> FeeError(<span class="stringliteral">"Rejecting no-fee, tiny-amount transaction"</span>)</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="comment"># Exercise for the reader: compute transaction priority, and</span></div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="comment"># warn if this is a very-low-priority transaction</span></div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span> </div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordflow">except</span> FeeError <span class="keyword">as</span> err:</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  sys.stderr.write((str(err)+<span class="stringliteral">"\n"</span>))</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  sys.exit(1)</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span> </div><div class="line"><a name="l00219"></a><span class="lineno"><a class="line" href="namespacespendfrom.html#a766cbcfc06e8292c1faac20ae02eaf9f"> 219</a></span> <span class="keyword">def </span><a class="code" href="namespacespendfrom.html#a766cbcfc06e8292c1faac20ae02eaf9f">main</a>():</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keyword">import</span> optparse</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span> </div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  parser = optparse.OptionParser(usage=<span class="stringliteral">"%prog [options]"</span>)</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  parser.add_option(<span class="stringliteral">"--from"</span>, dest=<span class="stringliteral">"fromaddresses"</span>, default=<span class="keywordtype">None</span>,</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  help=<span class="stringliteral">"addresses to get dashs from"</span>)</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  parser.add_option(<span class="stringliteral">"--to"</span>, dest=<span class="stringliteral">"to"</span>, default=<span class="keywordtype">None</span>,</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  help=<span class="stringliteral">"address to get send dashs to"</span>)</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  parser.add_option(<span class="stringliteral">"--amount"</span>, dest=<span class="stringliteral">"amount"</span>, default=<span class="keywordtype">None</span>,</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  help=<span class="stringliteral">"amount to send"</span>)</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  parser.add_option(<span class="stringliteral">"--fee"</span>, dest=<span class="stringliteral">"fee"</span>, default=<span class="stringliteral">"0.0"</span>,</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  help=<span class="stringliteral">"fee to include"</span>)</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  parser.add_option(<span class="stringliteral">"--datadir"</span>, dest=<span class="stringliteral">"datadir"</span>, default=<a class="code" href="namespacespendfrom.html#a76a7cd0e02f603a6b34e738c11281827">determine_db_dir</a>(),</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  help=<span class="stringliteral">"location of dash.conf file with RPC username/password (default: %default)"</span>)</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  parser.add_option(<span class="stringliteral">"--testnet"</span>, dest=<span class="stringliteral">"testnet"</span>, default=<span class="keyword">False</span>, action=<span class="stringliteral">"store_true"</span>,</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  help=<span class="stringliteral">"Use the test network"</span>)</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  parser.add_option(<span class="stringliteral">"--dry_run"</span>, dest=<span class="stringliteral">"dry_run"</span>, default=<span class="keyword">False</span>, action=<span class="stringliteral">"store_true"</span>,</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  help=<span class="stringliteral">"Don't broadcast the transaction, just create and print the transaction data"</span>)</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span> </div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  (options, args) = parser.parse_args()</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span> </div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <a class="code" href="namespacespendfrom.html#a053eb1296d2298579e23dea1554c4366">check_json_precision</a>()</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  config = <a class="code" href="namespacespendfrom.html#a8bfba3975f0fc5ffb03017fca87d6070">read_bitcoin_config</a>(options.datadir)</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordflow">if</span> options.testnet: config[<span class="stringliteral">'testnet'</span>] = <span class="keyword">True</span></div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  dashd = <a class="code" href="namespacespendfrom.html#a8c28ff8f5293c9f2705fb16dfe758b06">connect_JSON</a>(config)</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span> </div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="keywordflow">if</span> options.amount <span class="keywordflow">is</span> <span class="keywordtype">None</span>:</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  address_summary = <a class="code" href="namespacespendfrom.html#aaf7d6465a697829e270ae02569e1e998">list_available</a>(dashd)</div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keywordflow">for</span> address,info <span class="keywordflow">in</span> address_summary.iteritems():</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  n_transactions = len(info[<span class="stringliteral">'outputs'</span>])</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keywordflow">if</span> n_transactions > 1:</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  print(<span class="stringliteral">"%s %.8f %s (%d transactions)"</span>%(address, info[<span class="stringliteral">'total'</span>], info[<span class="stringliteral">'account'</span>], n_transactions))</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keywordflow">else</span>:</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  print(<span class="stringliteral">"%s %.8f %s"</span>%(address, info[<span class="stringliteral">'total'</span>], info[<span class="stringliteral">'account'</span>]))</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keywordflow">else</span>:</div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  fee = Decimal(options.fee)</div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  amount = Decimal(options.amount)</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="keywordflow">while</span> <a class="code" href="namespacespendfrom.html#a0bd685173bd4cdc922a55b4ee160270a">unlock_wallet</a>(dashd) == <span class="keyword">False</span>:</div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="keywordflow">pass</span> <span class="comment"># Keep asking for passphrase until they get it right</span></div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  txdata = <a class="code" href="namespacespendfrom.html#a02823764c491134bd191101b9b0ed951">create_tx</a>(dashd, options.fromaddresses.split(<span class="stringliteral">","</span>), options.to, amount, fee)</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <a class="code" href="namespacespendfrom.html#a1aeba0ede6497a97fb9bdd502ec3672e">sanity_test_fee</a>(dashd, txdata, amount*Decimal(<span class="stringliteral">"0.01"</span>))</div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="keywordflow">if</span> options.dry_run:</div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  print(txdata)</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keywordflow">else</span>:</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  txid = dashd.sendrawtransaction(txdata)</div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  print(txid)</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span> </div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span> <span class="keywordflow">if</span> __name__ == <span class="stringliteral">'__main__'</span>:</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <a class="code" href="namespacespendfrom.html#a766cbcfc06e8292c1faac20ae02eaf9f">main</a>()</div><div class="ttc" id="namespacespendfrom_html_abb1ca8afec3b2f6724d1c88a9e95f811"><div class="ttname"><a href="namespacespendfrom.html#abb1ca8afec3b2f6724d1c88a9e95f811">spendfrom.select_coins</a></div><div class="ttdeci">def select_coins(needed, inputs)</div><div class="ttdef"><b>Definition:</b> <a href="spendfrom_8py_source.html#l00131">spendfrom.py:131</a></div></div>
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<div class="ttc" id="namespacespendfrom_html_a766cbcfc06e8292c1faac20ae02eaf9f"><div class="ttname"><a href="namespacespendfrom.html#a766cbcfc06e8292c1faac20ae02eaf9f">spendfrom.main</a></div><div class="ttdeci">def main()</div><div class="ttdef"><b>Definition:</b> <a href="spendfrom_8py_source.html#l00219">spendfrom.py:219</a></div></div>
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<div class="ttc" id="namespacespendfrom_html_a053eb1296d2298579e23dea1554c4366"><div class="ttname"><a href="namespacespendfrom.html#a053eb1296d2298579e23dea1554c4366">spendfrom.check_json_precision</a></div><div class="ttdeci">def check_json_precision()</div><div class="ttdef"><b>Definition:</b> <a href="spendfrom_8py_source.html#l00028">spendfrom.py:28</a></div></div>
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<div class="ttc" id="namespacespendfrom_html_aafc7d92183882a448bf53f9b8ec96b6b"><div class="ttname"><a href="namespacespendfrom.html#aafc7d92183882a448bf53f9b8ec96b6b">spendfrom.compute_amount_in</a></div><div class="ttdeci">def compute_amount_in(dashd, txinfo)</div><div class="ttdef"><b>Definition:</b> <a href="spendfrom_8py_source.html#l00182">spendfrom.py:182</a></div></div>
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<div class="ttc" id="namespacespendfrom_html_a02823764c491134bd191101b9b0ed951"><div class="ttname"><a href="namespacespendfrom.html#a02823764c491134bd191101b9b0ed951">spendfrom.create_tx</a></div><div class="ttdeci">def create_tx(dashd, fromaddresses, toaddress, amount, fee)</div><div class="ttdef"><b>Definition:</b> <a href="spendfrom_8py_source.html#l00142">spendfrom.py:142</a></div></div>
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<div class="ttc" id="namespacespendfrom_html_a0bd685173bd4cdc922a55b4ee160270a"><div class="ttname"><a href="namespacespendfrom.html#a0bd685173bd4cdc922a55b4ee160270a">spendfrom.unlock_wallet</a></div><div class="ttdeci">def unlock_wallet(dashd)</div><div class="ttdef"><b>Definition:</b> <a href="spendfrom_8py_source.html#l00084">spendfrom.py:84</a></div></div>
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<div class="ttc" id="namespacespendfrom_html_aaf7d6465a697829e270ae02569e1e998"><div class="ttname"><a href="namespacespendfrom.html#aaf7d6465a697829e270ae02569e1e998">spendfrom.list_available</a></div><div class="ttdeci">def list_available(dashd)</div><div class="ttdef"><b>Definition:</b> <a href="spendfrom_8py_source.html#l00099">spendfrom.py:99</a></div></div>
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<div class="ttc" id="namespacespendfrom_html_a1aeba0ede6497a97fb9bdd502ec3672e"><div class="ttname"><a href="namespacespendfrom.html#a1aeba0ede6497a97fb9bdd502ec3672e">spendfrom.sanity_test_fee</a></div><div class="ttdeci">def sanity_test_fee(dashd, txdata_hex, max_fee)</div><div class="ttdef"><b>Definition:</b> <a href="spendfrom_8py_source.html#l00196">spendfrom.py:196</a></div></div>
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<div class="ttc" id="namespacespendfrom_html_a76a7cd0e02f603a6b34e738c11281827"><div class="ttname"><a href="namespacespendfrom.html#a76a7cd0e02f603a6b34e738c11281827">spendfrom.determine_db_dir</a></div><div class="ttdeci">def determine_db_dir()</div><div class="ttdef"><b>Definition:</b> <a href="spendfrom_8py_source.html#l00035">spendfrom.py:35</a></div></div>
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<div class="ttc" id="namespacespendfrom_html_a8c28ff8f5293c9f2705fb16dfe758b06"><div class="ttname"><a href="namespacespendfrom.html#a8c28ff8f5293c9f2705fb16dfe758b06">spendfrom.connect_JSON</a></div><div class="ttdeci">def connect_JSON(config)</div><div class="ttdef"><b>Definition:</b> <a href="spendfrom_8py_source.html#l00065">spendfrom.py:65</a></div></div>
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<div class="ttc" id="namespacespendfrom_html_a8bfba3975f0fc5ffb03017fca87d6070"><div class="ttname"><a href="namespacespendfrom.html#a8bfba3975f0fc5ffb03017fca87d6070">spendfrom.read_bitcoin_config</a></div><div class="ttdeci">def read_bitcoin_config(dbdir)</div><div class="ttdef"><b>Definition:</b> <a href="spendfrom_8py_source.html#l00043">spendfrom.py:43</a></div></div>
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<div class="ttc" id="namespacespendfrom_html_aa41965a962604157ab740b80559d7edd"><div class="ttname"><a href="namespacespendfrom.html#aa41965a962604157ab740b80559d7edd">spendfrom.compute_amount_out</a></div><div class="ttdeci">def compute_amount_out(txinfo)</div><div class="ttdef"><b>Definition:</b> <a href="spendfrom_8py_source.html#l00190">spendfrom.py:190</a></div></div>
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<li class="navelem"><a class="el" href="dir_3847941dc22744d30c1d316a1f1a60e2.html">contrib</a></li><li class="navelem"><a class="el" href="dir_8a4999fece34117d270fcd789c047008.html">spendfrom</a></li><li class="navelem"><a class="el" href="spendfrom_8py.html">spendfrom.py</a></li>
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<li class="footer">Generated on Thu Dec 14 2017 13:15:01 for Dash Core by
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