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1 " Vim syntax file
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2 " Language: Python
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3 " Maintainer: Neil Schemenauer <nas@python.ca>
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4 " Last Change: 2013 Feb 26
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5 " Credits: Zvezdan Petkovic <zpetkovic@acm.org>
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6 " Neil Schemenauer <nas@python.ca>
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7 " Dmitry Vasiliev
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8 "
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9 " This version is a major rewrite by Zvezdan Petkovic.
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10 "
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11 " - introduced highlighting of doctests
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12 " - updated keywords, built-ins, and exceptions
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13 " - corrected regular expressions for
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14 "
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15 " * functions
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16 " * decorators
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17 " * strings
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18 " * escapes
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19 " * numbers
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20 " * space error
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21 "
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22 " - corrected synchronization
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23 " - more highlighting is ON by default, except
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24 " - space error highlighting is OFF by default
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25 "
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26 " Optional highlighting can be controlled using these variables.
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27 "
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28 " let python_no_builtin_highlight = 1
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29 " let python_no_doctest_code_highlight = 1
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30 " let python_no_doctest_highlight = 1
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31 " let python_no_exception_highlight = 1
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32 " let python_no_number_highlight = 1
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33 " let python_space_error_highlight = 1
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34 "
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35 " All the options above can be switched on together.
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36 "
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37 " let python_highlight_all = 1
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38 "
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39
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40 " For version 5.x: Clear all syntax items.
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41 " For version 6.x: Quit when a syntax file was already loaded.
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42 if version < 600
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43 syntax clear
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44 elseif exists("b:current_syntax")
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45 finish
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46 endif
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47
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48 " We need nocompatible mode in order to continue lines with backslashes.
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49 " Original setting will be restored.
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50 let s:cpo_save = &cpo
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51 set cpo&vim
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52
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53 " Keep Python keywords in alphabetical order inside groups for easy
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54 " comparison with the table in the 'Python Language Reference'
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55 " http://docs.python.org/reference/lexical_analysis.html#keywords.
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56 " Groups are in the order presented in NAMING CONVENTIONS in syntax.txt.
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57 " Exceptions come last at the end of each group (class and def below).
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58 "
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59 " Keywords 'with' and 'as' are new in Python 2.6
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60 " (use 'from __future__ import with_statement' in Python 2.5).
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61 "
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62 " Some compromises had to be made to support both Python 3.0 and 2.6.
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63 " We include Python 3.0 features, but when a definition is duplicated,
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64 " the last definition takes precedence.
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65 "
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66 " - 'False', 'None', and 'True' are keywords in Python 3.0 but they are
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67 " built-ins in 2.6 and will be highlighted as built-ins below.
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68 " - 'exec' is a built-in in Python 3.0 and will be highlighted as
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69 " built-in below.
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70 " - 'nonlocal' is a keyword in Python 3.0 and will be highlighted.
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71 " - 'print' is a built-in in Python 3.0 and will be highlighted as
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72 " built-in below (use 'from __future__ import print_function' in 2.6)
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73 "
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74 syn keyword pythonStatement False, None, True
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75 syn keyword pythonStatement as assert break continue del exec global
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76 syn keyword pythonStatement lambda nonlocal pass print return with yield
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77 syn keyword pythonStatement class def nextgroup=pythonFunction skipwhite
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78 syn keyword pythonConditional elif else if
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79 syn keyword pythonRepeat for while
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80 syn keyword pythonOperator and in is not or
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81 syn keyword pythonException except finally raise try
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82 syn keyword pythonInclude from import
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83
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84 " Decorators (new in Python 2.4)
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85 syn match pythonDecorator "@" display nextgroup=pythonFunction skipwhite
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86 " The zero-length non-grouping match before the function name is
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87 " extremely important in pythonFunction. Without it, everything is
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88 " interpreted as a function inside the contained environment of
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89 " doctests.
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90 " A dot must be allowed because of @MyClass.myfunc decorators.
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91 syn match pythonFunction
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92 \ "\%(\%(def\s\|class\s\|@\)\s*\)\@<=\h\%(\w\|\.\)*" contained
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93
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94 syn match pythonComment "#.*$" contains=pythonTodo,@Spell
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95 syn keyword pythonTodo FIXME NOTE NOTES TODO XXX contained
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96
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97 " Triple-quoted strings can contain doctests.
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98 syn region pythonString
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99 \ start=+[uU]\=\z(['"]\)+ end="\z1" skip="\\\\\|\\\z1"
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100 \ contains=pythonEscape,@Spell
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101 syn region pythonString
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102 \ start=+[uU]\=\z('''\|"""\)+ end="\z1" keepend
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103 \ contains=pythonEscape,pythonSpaceError,pythonDoctest,@Spell
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104 syn region pythonRawString
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105 \ start=+[uU]\=[rR]\z(['"]\)+ end="\z1" skip="\\\\\|\\\z1"
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106 \ contains=@Spell
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107 syn region pythonRawString
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108 \ start=+[uU]\=[rR]\z('''\|"""\)+ end="\z1" keepend
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109 \ contains=pythonSpaceError,pythonDoctest,@Spell
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110
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111 syn match pythonEscape +\\[abfnrtv'"\\]+ contained
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112 syn match pythonEscape "\\\o\{1,3}" contained
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113 syn match pythonEscape "\\x\x\{2}" contained
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114 syn match pythonEscape "\%(\\u\x\{4}\|\\U\x\{8}\)" contained
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115 " Python allows case-insensitive Unicode IDs: http://www.unicode.org/charts/
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116 syn match pythonEscape "\\N{\a\+\%(\s\a\+\)*}" contained
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117 syn match pythonEscape "\\$"
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118
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119 if exists("python_highlight_all")
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120 if exists("python_no_builtin_highlight")
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121 unlet python_no_builtin_highlight
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122 endif
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123 if exists("python_no_doctest_code_highlight")
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124 unlet python_no_doctest_code_highlight
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125 endif
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126 if exists("python_no_doctest_highlight")
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127 unlet python_no_doctest_highlight
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128 endif
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129 if exists("python_no_exception_highlight")
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130 unlet python_no_exception_highlight
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131 endif
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132 if exists("python_no_number_highlight")
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133 unlet python_no_number_highlight
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134 endif
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135 let python_space_error_highlight = 1
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136 endif
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137
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138 " It is very important to understand all details before changing the
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139 " regular expressions below or their order.
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140 " The word boundaries are *not* the floating-point number boundaries
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141 " because of a possible leading or trailing decimal point.
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142 " The expressions below ensure that all valid number literals are
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143 " highlighted, and invalid number literals are not. For example,
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144 "
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145 " - a decimal point in '4.' at the end of a line is highlighted,
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146 " - a second dot in 1.0.0 is not highlighted,
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147 " - 08 is not highlighted,
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148 " - 08e0 or 08j are highlighted,
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149 "
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150 " and so on, as specified in the 'Python Language Reference'.
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151 " http://docs.python.org/reference/lexical_analysis.html#numeric-literals
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152 if !exists("python_no_number_highlight")
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153 " numbers (including longs and complex)
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154 syn match pythonNumber "\<0[oO]\=\o\+[Ll]\=\>"
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155 syn match pythonNumber "\<0[xX]\x\+[Ll]\=\>"
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156 syn match pythonNumber "\<0[bB][01]\+[Ll]\=\>"
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157 syn match pythonNumber "\<\%([1-9]\d*\|0\)[Ll]\=\>"
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158 syn match pythonNumber "\<\d\+[jJ]\>"
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159 syn match pythonNumber "\<\d\+[eE][+-]\=\d\+[jJ]\=\>"
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160 syn match pythonNumber
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161 \ "\<\d\+\.\%([eE][+-]\=\d\+\)\=[jJ]\=\%(\W\|$\)\@="
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162 syn match pythonNumber
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163 \ "\%(^\|\W\)\@<=\d*\.\d\+\%([eE][+-]\=\d\+\)\=[jJ]\=\>"
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164 endif
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165
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166 " Group the built-ins in the order in the 'Python Library Reference' for
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167 " easier comparison.
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168 " http://docs.python.org/library/constants.html
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169 " http://docs.python.org/library/functions.html
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170 " http://docs.python.org/library/functions.html#non-essential-built-in-functions
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171 " Python built-in functions are in alphabetical order.
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172 if !exists("python_no_builtin_highlight")
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173 " built-in constants
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174 " 'False', 'True', and 'None' are also reserved words in Python 3.0
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175 syn keyword pythonBuiltin False True None
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176 syn keyword pythonBuiltin NotImplemented Ellipsis __debug__
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177 " built-in functions
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178 syn keyword pythonBuiltin abs all any bin bool chr classmethod
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179 syn keyword pythonBuiltin compile complex delattr dict dir divmod
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180 syn keyword pythonBuiltin enumerate eval filter float format
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181 syn keyword pythonBuiltin frozenset getattr globals hasattr hash
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182 syn keyword pythonBuiltin help hex id input int isinstance
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183 syn keyword pythonBuiltin issubclass iter len list locals map max
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184 syn keyword pythonBuiltin min next object oct open ord pow print
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185 syn keyword pythonBuiltin property range repr reversed round set
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186 syn keyword pythonBuiltin setattr slice sorted staticmethod str
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187 syn keyword pythonBuiltin sum super tuple type vars zip __import__
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188 " Python 2.6 only
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189 syn keyword pythonBuiltin basestring callable cmp execfile file
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190 syn keyword pythonBuiltin long raw_input reduce reload unichr
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191 syn keyword pythonBuiltin unicode xrange
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192 " Python 3.0 only
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193 syn keyword pythonBuiltin ascii bytearray bytes exec memoryview
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194 " non-essential built-in functions; Python 2.6 only
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195 syn keyword pythonBuiltin apply buffer coerce intern
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196 endif
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197
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198 " From the 'Python Library Reference' class hierarchy at the bottom.
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199 " http://docs.python.org/library/exceptions.html
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200 if !exists("python_no_exception_highlight")
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201 " builtin base exceptions (only used as base classes for other exceptions)
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202 syn keyword pythonExceptions BaseException Exception
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203 syn keyword pythonExceptions ArithmeticError EnvironmentError
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204 syn keyword pythonExceptions LookupError
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205 " builtin base exception removed in Python 3.0
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206 syn keyword pythonExceptions StandardError
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207 " builtin exceptions (actually raised)
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208 syn keyword pythonExceptions AssertionError AttributeError BufferError
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209 syn keyword pythonExceptions EOFError FloatingPointError GeneratorExit
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210 syn keyword pythonExceptions IOError ImportError IndentationError
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211 syn keyword pythonExceptions IndexError KeyError KeyboardInterrupt
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212 syn keyword pythonExceptions MemoryError NameError NotImplementedError
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213 syn keyword pythonExceptions OSError OverflowError ReferenceError
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214 syn keyword pythonExceptions RuntimeError StopIteration SyntaxError
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215 syn keyword pythonExceptions SystemError SystemExit TabError TypeError
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216 syn keyword pythonExceptions UnboundLocalError UnicodeError
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217 syn keyword pythonExceptions UnicodeDecodeError UnicodeEncodeError
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218 syn keyword pythonExceptions UnicodeTranslateError ValueError VMSError
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219 syn keyword pythonExceptions WindowsError ZeroDivisionError
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220 " builtin warnings
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221 syn keyword pythonExceptions BytesWarning DeprecationWarning FutureWarning
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222 syn keyword pythonExceptions ImportWarning PendingDeprecationWarning
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223 syn keyword pythonExceptions RuntimeWarning SyntaxWarning UnicodeWarning
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224 syn keyword pythonExceptions UserWarning Warning
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225 endif
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226
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227 if exists("python_space_error_highlight")
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228 " trailing whitespace
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229 syn match pythonSpaceError display excludenl "\s\+$"
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230 " mixed tabs and spaces
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231 syn match pythonSpaceError display " \+\t"
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232 syn match pythonSpaceError display "\t\+ "
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233 endif
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234
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235 " Do not spell doctests inside strings.
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236 " Notice that the end of a string, either ''', or """, will end the contained
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237 " doctest too. Thus, we do *not* need to have it as an end pattern.
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238 if !exists("python_no_doctest_highlight")
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239 if !exists("python_no_doctest_code_highlight")
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240 syn region pythonDoctest
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241 \ start="^\s*>>>\s" end="^\s*$"
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242 \ contained contains=ALLBUT,pythonDoctest,@Spell
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243 syn region pythonDoctestValue
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244 \ start=+^\s*\%(>>>\s\|\.\.\.\s\|"""\|'''\)\@!\S\++ end="$"
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245 \ contained
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246 else
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247 syn region pythonDoctest
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248 \ start="^\s*>>>" end="^\s*$"
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249 \ contained contains=@NoSpell
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250 endif
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251 endif
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252
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253 " Sync at the beginning of class, function, or method definition.
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254 syn sync match pythonSync grouphere NONE "^\s*\%(def\|class\)\s\+\h\w*\s*("
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255
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256 if version >= 508 || !exists("did_python_syn_inits")
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257 if version <= 508
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258 let did_python_syn_inits = 1
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259 command -nargs=+ HiLink hi link <args>
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260 else
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261 command -nargs=+ HiLink hi def link <args>
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262 endif
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263
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264 " The default highlight links. Can be overridden later.
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265 HiLink pythonStatement Statement
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266 HiLink pythonConditional Conditional
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267 HiLink pythonRepeat Repeat
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268 HiLink pythonOperator Operator
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269 HiLink pythonException Exception
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270 HiLink pythonInclude Include
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271 HiLink pythonDecorator Define
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272 HiLink pythonFunction Function
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273 HiLink pythonComment Comment
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274 HiLink pythonTodo Todo
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275 HiLink pythonString String
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276 HiLink pythonRawString String
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277 HiLink pythonEscape Special
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278 if !exists("python_no_number_highlight")
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279 HiLink pythonNumber Number
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280 endif
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281 if !exists("python_no_builtin_highlight")
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282 HiLink pythonBuiltin Function
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283 endif
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284 if !exists("python_no_exception_highlight")
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285 HiLink pythonExceptions Structure
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286 endif
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287 if exists("python_space_error_highlight")
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288 HiLink pythonSpaceError Error
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289 endif
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290 if !exists("python_no_doctest_highlight")
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291 HiLink pythonDoctest Special
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292 HiLink pythonDoctestValue Define
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293 endif
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294
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295 delcommand HiLink
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296 endif
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297
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298 let b:current_syntax = "python"
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299
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300 let &cpo = s:cpo_save
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301 unlet s:cpo_save
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302
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303 " vim:set sw=2 sts=2 ts=8 noet:
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