parsers.py 文件源码

def mk_operator(which):
    ops = {'+':operator.add, '-':operator.sub, '*':operator.mul, '/':operator.truediv, '^':operator.pow,
           '&&': operator.and_, '||': operator.or_, '!':operator.not_,
           'and': operator.and_, 'or': operator.or_, 'not':operator.not_,
           'in': lambda x, y: operator.contains(y, x), '=':operator.eq,
           '<': operator.lt, '<=':operator.le, '>=':operator.ge, '>':operator.gt }
    return ops[which]


# Token makers