def compile_pattern(self):
        if self.PATTERN is not None:
            PC = PatternCompiler()
            self.pattern, self.pattern_tree = PC.compile_pattern(self.PATTERN,
                                                                 with_tree=True)
Compiles self.PATTERN into self.pattern.
dataset/ETHPy150Open ctxis/canape/CANAPE.Scripting/Lib/lib2to3/fixer_base.py/BaseFix.compile_pattern