def make_pat():
kw = r"\b" + any("KEYWORD", keyword.kwlist) + r"\b"
builtinlist = [str(name) for name in dir(builtins)
if not name.startswith('_') and \
name not in keyword.kwlist]
# self.file = open("file") :
# 1st 'file' colorized normal, 2nd as builtin, 3rd as string
builtin = r"([^.'\"\\#]\b|^)" + any("BUILTIN", builtinlist) + r"\b"
comment = any("COMMENT", [r"#[^\n]*"])
stringprefix = r"(\br|u|ur|R|U|UR|Ur|uR|b|B|br|Br|bR|BR|rb|rB|Rb|RB)?"
sqstring = stringprefix + r"'[^'\\\n]*(\\.[^'\\\n]*)*'?"
dqstring = stringprefix + r'"[^"\\\n]*(\\.[^"\\\n]*)*"?'
sq3string = stringprefix + r"'''[^'\\]*((\\.|'(?!''))[^'\\]*)*(''')?"
dq3string = stringprefix + r'"""[^"\\]*((\\.|"(?!""))[^"\\]*)*(""")?'
string = any("STRING", [sq3string, dq3string, sqstring, dqstring])
return kw + "|" + builtin + "|" + comment + "|" + string +\
"|" + any("SYNC", [r"\n"])
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