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%% This is part of OpTeX project, see http://petr.olsak.net/optex

\_codedecl \_hisyntaxpython {Syntax highlighting for Python sources <2020-04-04>} 

\_newtoks \_hisyntaxpython  \_newtoks \_hicolorspython

\_global\_hicolorspython={% colors for Python language
   \_hicolor M \Orange    % Multi line strings
   \_hicolor S {\_visiblesp \Grey} % Single line strings
   \_hicolor C \Green     % Comments
   \_hicolor K \LightBlue % Keywords
   \_hicolor O \Blue      % Operators
   \_hicolor N \Red       % Numbers
   \_hicolor D \Magenta   % def names
   \_hicolor L \Black     % class names
   \_hicolor R \Magenta   % Decorators
}
\_global\_hisyntaxpython={%
   \_the\_hicolorspython
   \_let\s=\_relax  \_let\c=\_relax \_let\e=\_relax \_let\o=\_relax
   \_replthis{\_string\"}{{\_string\"}}     % protect \", \'
   \_replthis{\_string\'}{{\_string\'}}
   %
   \_replfromto{\_string#}{^^J}{\z C{\##1}^^J} % comments
   %
   \_replthis{'''}{\_noexpand\_hipystr0{'''}M} % search string marks
   \_replthis{"""}{\_noexpand\_hipystr1{"""}M}
   \_replthis{"}{\_noexpand\_hipystr2{"}S}
   \_replthis{'}{\_noexpand\_hipystr3{'}S}
   \_edef\_tmpb{\_tmpb}                       % realize string marks
   %
   \_foreach {br}{Br}{bR}{BR}{rb}{rB}{Rb}{RB}uUrRbB  % string prefixes
       \_do {\_replthis{#1\s}{\_noexpand\_hipystrpre#1}}
   \_def\s{}
   \_edef\_tmpb{\_tmpb}
   %
   \_edef \_tmpa {+-*./=<>()[]:,;!|\_pcent   % operators
        \_string{\_string}@\_string&\_string~\_string^}
   \_ea\_foreach \_tmpa 
       \_do {\_replthis{#1}{\n\o#1\n}}
   %
   \_foreach                                 % keywords
      {and}{as}{assert}{async}{await}{break}{continue}{del}{elif}{else}{except}%
      {exec}{False}{finally}{for}{from}{global}{if}{import}{in}{is}{lambda}{None}% 	
      {nonlocal}{not}{or}{pass}{print}{raise}{return}{True}{try}{while}{with}{yield}%
      \_do {\_replthis{\n#1\n}{\z K{#1}}}
   \_replfromto{\n def\n}{\n\o(\n}{\z K{def}\x D{#1}\n\o(\n}
   \_replfromto{\n class\n}{\n\o(\n}{\z K{class}\x L{#1}\n\o(\n}
   %
   \_foreach 0123456789                       % numbers            
       \_do {\_replfromto{\n#1}{\n}{\c#1##1\e}}
   %
   \_replthis{\e\o.\c}{.}
   \_replthis{\e\o.\n}{.\e}
   \_replthis{\n\o.\c}{\c.}
   \_replthis{e\e\o+\c}{e+}\_replthis{e\e\o-\c}{e-}   
   \_replthis{E\e\o+\c}{E+}\_replthis{E\e\o-\c}{E-}   
   \_replthis{\e j}{j\e}
   %
   \_replfromto{\n\o@\n}{^^J}{\z R{#1}^^J}    % decorators
   %
   \_def\o#1{\z O{#1}}
   \_def\c#1\e{\z N{#1}}
}

\_gdef\_hipystr#1#2#3#4\_hipystr#5#6#7{%
   \_ifx#1#5\s\x#3{#2#4#2}%
   \_else \_afterfi{\_hipystr#1{#2}#3#4#6}\_fi
}
\_gdef\_hipystrpre#1\x#2{\x#2{#1}\x#2}

\_ifx\LightBlue\_undefined \_gdef\LightBlue {\_setcmykcolor{1 0.43 0 0}}\_fi 
\_ifx\Orange\_undefined    \_gdef\Orange    {\_setcmykcolor{0 0.64 1 0}}\_fi 

\_endcode %------------------------------------------------

This code was greatly inspired by the OPMac hisyntax macros for Python:

   https://gitlab.fit.cvut.cz/krajnpet/PySyntax

created by Petr Krajnik.