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1 <!doctype html>
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2
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3 <title>CodeMirror: Python mode</title>
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4 <meta charset="utf-8"/>
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5 <link rel=stylesheet href="../../doc/docs.css">
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6
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7 <link rel="stylesheet" href="../../lib/codemirror.css">
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8 <script src="../../lib/codemirror.js"></script>
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9 <script src="../../addon/edit/matchbrackets.js"></script>
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10 <script src="python.js"></script>
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11 <style>.CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}</style>
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12 <div id=nav>
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13 <a href="https://codemirror.net/5"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png" alt=""></a>
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14
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15 <ul>
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16 <li><a href="../../index.html">Home</a>
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17 <li><a href="../../doc/manual.html">Manual</a>
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18 <li><a href="https://github.com/codemirror/codemirror5">Code</a>
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19 </ul>
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20 <ul>
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21 <li><a href="../index.html">Language modes</a>
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22 <li><a class=active href="#">Python</a>
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23 </ul>
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24 </div>
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25
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26 <article>
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27 <h2>Python mode</h2>
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28
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29 <div><textarea id="code" name="code">
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30 # Literals
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31 1234
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32 0.0e101
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33 .123
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34 0b01010011100
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35 0o01234567
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36 0x0987654321abcdef
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37 7
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38 2147483647
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39 3L
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40 79228162514264337593543950336L
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41 0x100000000L
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42 79228162514264337593543950336
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43 0xdeadbeef
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44 3.14j
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45 10.j
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46 10j
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47 .001j
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48 1e100j
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49 3.14e-10j
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50
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51
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52 # String Literals
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53 'For\''
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54 "God\""
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55 """so loved
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56 the world"""
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57 '''that he gave
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58 his only begotten\' '''
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59 'that whosoever believeth \
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60 in him'
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61 ''
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62
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63 # Identifiers
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64 __a__
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65 a.b
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66 a.b.c
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67
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68 #Unicode identifiers on Python3
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69 # a = x\ddot
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70 a⃗ = ẍ
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71 # a = v\dot
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72 a⃗ = v̇
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73
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74 #F\vec = m \cdot a\vec
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75 F⃗ = m•a⃗
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76
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77 # Operators
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78 + - * / % & | ^ ~ < >
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79 == != <= >= <> << >> // **
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80 and or not in is
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81
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82 #infix matrix multiplication operator (PEP 465)
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83 A @ B
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84
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85 # Delimiters
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86 () [] {} , : ` = ; @ . # Note that @ and . require the proper context on Python 2.
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87 += -= *= /= %= &= |= ^=
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88 //= >>= <<= **=
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89
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90 # Keywords
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91 as assert break class continue def del elif else except
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92 finally for from global if import lambda pass raise
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93 return try while with yield
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94
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95 # Python 2 Keywords (otherwise Identifiers)
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96 exec print
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97
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98 # Python 3 Keywords (otherwise Identifiers)
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99 nonlocal
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100
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101 # Types
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102 bool classmethod complex dict enumerate float frozenset int list object
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103 property reversed set slice staticmethod str super tuple type
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104
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105 # Python 2 Types (otherwise Identifiers)
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106 basestring buffer file long unicode xrange
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107
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108 # Python 3 Types (otherwise Identifiers)
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109 bytearray bytes filter map memoryview open range zip
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110
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111 # Some Example code
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112 import os
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113 from package import ParentClass
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114
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115 @nonsenseDecorator
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116 def doesNothing():
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117 pass
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118
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119 class ExampleClass(ParentClass):
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120 @staticmethod
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121 def example(inputStr):
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122 a = list(inputStr)
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123 a.reverse()
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124 return ''.join(a)
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125
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126 def __init__(self, mixin = 'Hello'):
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127 self.mixin = mixin
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128
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129 # Python 3.6 f-strings (https://www.python.org/dev/peps/pep-0498/)
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130 f'My name is {name}, my age next year is {age+1}, my anniversary is {anniversary:%A, %B %d, %Y}.'
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131 f'He said his name is {name!r}.'
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132 f"""He said his name is {name!r}."""
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133 f'{"quoted string"}'
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134 f'{{ {4*10} }}'
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135 f'This is an error }'
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136 f'This is ok }}'
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137 fr'x={4*10}\n'
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138 </textarea></div>
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139
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140
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141 <h2>Cython mode</h2>
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142
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143 <div><textarea id="code-cython" name="code-cython">
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144
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145 import numpy as np
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146 cimport cython
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147 from libc.math cimport sqrt
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148
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149 @cython.boundscheck(False)
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150 @cython.wraparound(False)
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151 def pairwise_cython(double[:, ::1] X):
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152 cdef int M = X.shape[0]
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153 cdef int N = X.shape[1]
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154 cdef double tmp, d
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155 cdef double[:, ::1] D = np.empty((M, M), dtype=np.float64)
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156 for i in range(M):
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157 for j in range(M):
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158 d = 0.0
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159 for k in range(N):
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160 tmp = X[i, k] - X[j, k]
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161 d += tmp * tmp
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162 D[i, j] = sqrt(d)
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163 return np.asarray(D)
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164
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165 </textarea></div>
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166
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167 <script>
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168 var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
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169 mode: {name: "python",
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170 version: 3,
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171 singleLineStringErrors: false},
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172 lineNumbers: true,
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173 indentUnit: 4,
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174 matchBrackets: true
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175 });
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176
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177 CodeMirror.fromTextArea(document.getElementById("code-cython"), {
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178 mode: {name: "text/x-cython",
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179 version: 2,
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180 singleLineStringErrors: false},
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181 lineNumbers: true,
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182 indentUnit: 4,
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183 matchBrackets: true
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184 });
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185 </script>
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186 <h2>Configuration Options for Python mode:</h2>
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187 <ul>
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188 <li>version - 2/3 - The version of Python to recognize. Default is 3.</li>
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189 <li>singleLineStringErrors - true/false - If you have a single-line string that is not terminated at the end of the line, this will show subsequent lines as errors if true, otherwise it will consider the newline as the end of the string. Default is false.</li>
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190 <li>hangingIndent - int - If you want to write long arguments to a function starting on a new line, how much that line should be indented. Defaults to one normal indentation unit.</li>
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191 </ul>
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192 <h2>Advanced Configuration Options:</h2>
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193 <p>Useful for superset of python syntax like Enthought enaml, IPython magics and questionmark help</p>
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194 <ul>
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195 <li>singleOperators - RegEx - Regular Expression for single operator matching, default : <pre>^[\\+\\-\\*/%&|\\^~<>!]</pre> including <pre>@</pre> on Python 3</li>
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196 <li>singleDelimiters - RegEx - Regular Expression for single delimiter matching, default : <pre>^[\\(\\)\\[\\]\\{\\}@,:`=;\\.]</pre></li>
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197 <li>doubleOperators - RegEx - Regular Expression for double operators matching, default : <pre>^((==)|(!=)|(<=)|(>=)|(<>)|(<<)|(>>)|(//)|(\\*\\*))</pre></li>
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198 <li>doubleDelimiters - RegEx - Regular Expression for double delimiters matching, default : <pre>^((\\+=)|(\\-=)|(\\*=)|(%=)|(/=)|(&=)|(\\|=)|(\\^=))</pre></li>
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199 <li>tripleDelimiters - RegEx - Regular Expression for triple delimiters matching, default : <pre>^((//=)|(>>=)|(<<=)|(\\*\\*=))</pre></li>
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200 <li>identifiers - RegEx - Regular Expression for identifier, default : <pre>^[_A-Za-z][_A-Za-z0-9]*</pre> on Python 2 and <pre>^[_A-Za-z\u00A1-\uFFFF][_A-Za-z0-9\u00A1-\uFFFF]*</pre> on Python 3.</li>
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201 <li>extra_keywords - list of string - List of extra words ton consider as keywords</li>
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202 <li>extra_builtins - list of string - List of extra words ton consider as builtins</li>
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203 </ul>
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204
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205
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206 <p><strong>MIME types defined:</strong> <code>text/x-python</code> and <code>text/x-cython</code>.</p>
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207 </article>
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