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" Vim syntax file " Language: Python " Maintainer: Zvezdan Petkovic <zpetkovic@acm.org> " Last Change: 2023 Feb 26 " Credits: Neil Schemenauer <nas@python.ca> " Dmitry Vasiliev " " This version is a major rewrite by Zvezdan Petkovic. " " - introduced highlighting of doctests " - updated keywords, built-ins, and exceptions " - corrected regular expressions for " " * functions " * decorators " * strings " * escapes " * numbers " * space error " " - corrected synchronization " - more highlighting is ON by default, except " - space error highlighting is OFF by default " " Optional highlighting can be controlled using these variables. " " let python_no_builtin_highlight = 1 " let python_no_doctest_code_highlight = 1 " let python_no_doctest_highlight = 1 " let python_no_exception_highlight = 1 " let python_no_number_highlight = 1 " let python_space_error_highlight = 1 " " All the options above can be switched on together. " " let python_highlight_all = 1 " " The use of Python 2 compatible syntax highlighting can be enforced. " The straddling code (Python 2 and 3 compatible), up to Python 3.5, " will be also supported. " " let python_use_python2_syntax = 1 " " This option will exclude all modern Python 3.6 or higher features. " " quit when a syntax file was already loaded. if exists("b:current_syntax") finish endif " Use of Python 2 and 3.5 or lower requested. if exists("python_use_python2_syntax") runtime! syntax/python2.vim finish endif " We need nocompatible mode in order to continue lines with backslashes. " Original setting will be restored. let s:cpo_save = &cpo set cpo&vim if exists("python_no_doctest_highlight") let python_no_doctest_code_highlight = 1 endif if exists("python_highlight_all") if exists("python_no_builtin_highlight") unlet python_no_builtin_highlight endif if exists("python_no_doctest_code_highlight") unlet python_no_doctest_code_highlight endif if exists("python_no_doctest_highlight") unlet python_no_doctest_highlight endif if exists("python_no_exception_highlight") unlet python_no_exception_highlight endif if exists("python_no_number_highlight") unlet python_no_number_highlight endif let python_space_error_highlight = 1 endif " Keep Python keywords in alphabetical order inside groups for easy " comparison with the table in the 'Python Language Reference' " https://docs.python.org/reference/lexical_analysis.html#keywords. " Groups are in the order presented in NAMING CONVENTIONS in syntax.txt. " Exceptions come last at the end of each group (class and def below). " " The list can be checked using: " " python3 -c 'import keyword, pprint; pprint.pprint(keyword.kwlist + keyword.softkwlist, compact=True)' " syn keyword pythonStatement False None True syn keyword pythonStatement as assert break continue del global syn keyword pythonStatement lambda nonlocal pass return with yield syn keyword pythonStatement class def nextgroup=pythonFunction skipwhite syn keyword pythonConditional elif else if syn keyword pythonRepeat for while syn keyword pythonOperator and in is not or syn keyword pythonException except finally raise try syn keyword pythonInclude from import syn keyword pythonAsync async await " Soft keywords " These keywords do not mean anything unless used in the right context. " See https://docs.python.org/3/reference/lexical_analysis.html#soft-keywords " for more on this. syn match pythonConditional "^\s*\zscase\%(\s\+.*:.*$\)\@=" syn match pythonConditional "^\s*\zsmatch\%(\s\+.*:\s*\%(#.*\)\=$\)\@=" " Decorators " A dot must be allowed because of @MyClass.myfunc decorators. syn match pythonDecorator "@" display contained syn match pythonDecoratorName "@\s*\h\%(\w\|\.\)*" display contains=pythonDecorator " Python 3.5 introduced the use of the same symbol for matrix multiplication: " https://www.python.org/dev/peps/pep-0465/. We now have to exclude the " symbol from highlighting when used in that context. " Single line multiplication. syn match pythonMatrixMultiply \ "\%(\w\|[])]\)\s*@" \ contains=ALLBUT,pythonDecoratorName,pythonDecorator,pythonFunction,pythonDoctestValue \ transparent " Multiplication continued on the next line after backslash. syn match pythonMatrixMultiply \ "[^\\]\\\s*\n\%(\s*\.\.\.\s\)\=\s\+@" \ contains=ALLBUT,pythonDecoratorName,pythonDecorator,pythonFunction,pythonDoctestValue \ transparent " Multiplication in a parenthesized expression over multiple lines with @ at " the start of each continued line; very similar to decorators and complex. syn match pythonMatrixMultiply \ "^\s*\%(\%(>>>\|\.\.\.\)\s\+\)\=\zs\%(\h\|\%(\h\|[[(]\).\{-}\%(\w\|[])]\)\)\s*\n\%(\s*\.\.\.\s\)\=\s\+@\%(.\{-}\n\%(\s*\.\.\.\s\)\=\s\+@\)*" \ contains=ALLBUT,pythonDecoratorName,pythonDecorator,pythonFunction,pythonDoctestValue \ transparent syn match pythonFunction "\h\w*" display contained syn match pythonComment "#.*$" contains=pythonTodo,@Spell syn keyword pythonTodo FIXME NOTE NOTES TODO XXX contained " Triple-quoted strings can contain doctests. syn region pythonString matchgroup=pythonQuotes \ start=+[uU]\=\z(['"]\)+ end="\z1" skip="\\\\\|\\\z1" \ contains=pythonEscape,@Spell syn region pythonString matchgroup=pythonTripleQuotes \ start=+[uU]\=\z('''\|"""\)+ end="\z1" keepend \ contains=pythonEscape,pythonSpaceError,pythonDoctest,@Spell syn region pythonRawString matchgroup=pythonQuotes \ start=+[uU]\=[rR]\z(['"]\)+ end="\z1" skip="\\\\\|\\\z1" \ contains=@Spell syn region pythonRawString matchgroup=pythonTripleQuotes \ start=+[uU]\=[rR]\z('''\|"""\)+ end="\z1" keepend \ contains=pythonSpaceError,pythonDoctest,@Spell syn match pythonEscape +\\[abfnrtv'"\\]+ contained syn match pythonEscape "\\\o\{1,3}" contained syn match pythonEscape "\\x\x\{2}" contained syn match pythonEscape "\%(\\u\x\{4}\|\\U\x\{8}\)" contained " Python allows case-insensitive Unicode IDs: http://www.unicode.org/charts/ syn match pythonEscape "\\N{\a\+\%(\s\a\+\)*}" contained syn match pythonEscape "\\$" " It is very important to understand all details before changing the " regular expressions below or their order. " The word boundaries are *not* the floating-point number boundaries " because of a possible leading or trailing decimal point. " The expressions below ensure that all valid number literals are " highlighted, and invalid number literals are not. For example, " " - a decimal point in '4.' at the end of a line is highlighted, " - a second dot in 1.0.0 is not highlighted, " - 08 is not highlighted, " - 08e0 or 08j are highlighted, " " and so on, as specified in the 'Python Language Reference'. " https://docs.python.org/reference/lexical_analysis.html#numeric-literals if !exists("python_no_number_highlight") " numbers (including longs and complex) syn match pythonNumber "\<0[oO]\=\o\+[Ll]\=\>" syn match pythonNumber "\<0[xX]\x\+[Ll]\=\>" syn match pythonNumber "\<0[bB][01]\+[Ll]\=\>" syn match pythonNumber "\<\%([1-9]\d*\|0\)[Ll]\=\>" syn match pythonNumber "\<\d\+[jJ]\>" syn match pythonNumber "\<\d\+[eE][+-]\=\d\+[jJ]\=\>" syn match pythonNumber \ "\<\d\+\.\%([eE][+-]\=\d\+\)\=[jJ]\=\%(\W\|$\)\@=" syn match pythonNumber \ "\%(^\|\W\)\zs\d*\.\d\+\%([eE][+-]\=\d\+\)\=[jJ]\=\>" endif " Group the built-ins in the order in the 'Python Library Reference' for " easier comparison. " https://docs.python.org/library/constants.html " http://docs.python.org/library/functions.html " Python built-in functions are in alphabetical order. " " The list can be checked using: " " python3 -c 'import builtins, pprint; pprint.pprint(dir(builtins), compact=True)' " " The constants added by the `site` module are not listed below because they " should not be used in programs, only in interactive interpreter. " Similarly for some other attributes and functions `__`-enclosed from the " output of the above command. " if !exists("python_no_builtin_highlight") " built-in constants " 'False', 'True', and 'None' are also reserved words in Python 3 syn keyword pythonBuiltin False True None syn keyword pythonBuiltin NotImplemented Ellipsis __debug__ " constants added by the `site` module syn keyword pythonBuiltin quit exit copyright credits license " built-in functions syn keyword pythonBuiltin abs all any ascii bin bool breakpoint bytearray syn keyword pythonBuiltin bytes callable chr classmethod compile complex syn keyword pythonBuiltin delattr dict dir divmod enumerate eval exec syn keyword pythonBuiltin filter float format frozenset getattr globals syn keyword pythonBuiltin hasattr hash help hex id input int isinstance syn keyword pythonBuiltin issubclass iter len list locals map max syn keyword pythonBuiltin memoryview min next object oct open ord pow syn keyword pythonBuiltin print property range repr reversed round set syn keyword pythonBuiltin setattr slice sorted staticmethod str sum super syn keyword pythonBuiltin tuple type vars zip __import__ " avoid highlighting attributes as builtins syn match pythonAttribute /\.\h\w*/hs=s+1 \ contains=ALLBUT,pythonBuiltin,pythonFunction,pythonAsync \ transparent endif " From the 'Python Library Reference' class hierarchy at the bottom. " http://docs.python.org/library/exceptions.html if !exists("python_no_exception_highlight") " builtin base exceptions (used mostly as base classes for other exceptions) syn keyword pythonExceptions BaseException Exception syn keyword pythonExceptions ArithmeticError BufferError LookupError " builtin exceptions (actually raised) syn keyword pythonExceptions AssertionError AttributeError EOFError syn keyword pythonExceptions FloatingPointError GeneratorExit ImportError syn keyword pythonExceptions IndentationError IndexError KeyError syn keyword pythonExceptions KeyboardInterrupt MemoryError syn keyword pythonExceptions ModuleNotFoundError NameError syn keyword pythonExceptions NotImplementedError OSError OverflowError syn keyword pythonExceptions RecursionError ReferenceError RuntimeError syn keyword pythonExceptions StopAsyncIteration StopIteration SyntaxError syn keyword pythonExceptions SystemError SystemExit TabError TypeError syn keyword pythonExceptions UnboundLocalError UnicodeDecodeError syn keyword pythonExceptions UnicodeEncodeError UnicodeError syn keyword pythonExceptions UnicodeTranslateError ValueError syn keyword pythonExceptions ZeroDivisionError " builtin exception aliases for OSError syn keyword pythonExceptions EnvironmentError IOError WindowsError " builtin OS exceptions in Python 3 syn keyword pythonExceptions BlockingIOError BrokenPipeError syn keyword pythonExceptions ChildProcessError ConnectionAbortedError syn keyword pythonExceptions ConnectionError ConnectionRefusedError syn keyword pythonExceptions ConnectionResetError FileExistsError syn keyword pythonExceptions FileNotFoundError InterruptedError syn keyword pythonExceptions IsADirectoryError NotADirectoryError syn keyword pythonExceptions PermissionError ProcessLookupError TimeoutError " builtin warnings syn keyword pythonExceptions BytesWarning DeprecationWarning FutureWarning syn keyword pythonExceptions ImportWarning PendingDeprecationWarning syn keyword pythonExceptions ResourceWarning RuntimeWarning syn keyword pythonExceptions SyntaxWarning UnicodeWarning syn keyword pythonExceptions UserWarning Warning endif if exists("python_space_error_highlight") " trailing whitespace syn match pythonSpaceError display excludenl "\s\+$" " mixed tabs and spaces syn match pythonSpaceError display " \+\t" syn match pythonSpaceError display "\t\+ " endif " Do not spell doctests inside strings. " Notice that the end of a string, either ''', or """, will end the contained " doctest too. Thus, we do *not* need to have it as an end pattern. if !exists("python_no_doctest_highlight") if !exists("python_no_doctest_code_highlight") syn region pythonDoctest \ start="^\s*>>>\s" end="^\s*$" \ contained contains=ALLBUT,pythonDoctest,pythonFunction,@Spell syn region pythonDoctestValue \ start=+^\s*\%(>>>\s\|\.\.\.\s\|"""\|'''\)\@!\S\++ end="$" \ contained else syn region pythonDoctest \ start="^\s*>>>" end="^\s*$" \ contained contains=@NoSpell endif endif " Sync at the beginning of class, function, or method definition. syn sync match pythonSync grouphere NONE "^\%(def\|class\)\s\+\h\w*\s*[(:]" " The default highlight links. Can be overridden later. hi def link pythonStatement Statement hi def link pythonConditional Conditional hi def link pythonRepeat Repeat hi def link pythonOperator Operator hi def link pythonException Exception hi def link pythonInclude Include hi def link pythonAsync Statement hi def link pythonDecorator Define hi def link pythonDecoratorName Function hi def link pythonFunction Function hi def link pythonComment Comment hi def link pythonTodo Todo hi def link pythonString String hi def link pythonRawString String hi def link pythonQuotes String hi def link pythonTripleQuotes pythonQuotes hi def link pythonEscape Special if !exists("python_no_number_highlight") hi def link pythonNumber Number endif if !exists("python_no_builtin_highlight") hi def link pythonBuiltin Function endif if !exists("python_no_exception_highlight") hi def link pythonExceptions Structure endif if exists("python_space_error_highlight") hi def link pythonSpaceError Error endif if !exists("python_no_doctest_highlight") hi def link pythonDoctest Special hi def link pythonDoctestValue Define endif let b:current_syntax = "python" let &cpo = s:cpo_save unlet s:cpo_save " vim:set sw=2 sts=2 ts=8 noet: