pyparser.py 文件源码

def parse(code, mode='exec', **exception_kwargs):
    """Parse an expression into AST"""


    try:
        if _ast:
            return _ast_util.parse(code, '<unknown>', mode)
        else:
            if isinstance(code, compat.text_type):
                code = code.encode('ascii', 'backslashreplace')
            return compiler_parse(code, mode)
    except Exception:
        raise exceptions.SyntaxException(
                    "(%s) %s (%r)" % (
                        compat.exception_as().__class__.__name__,
                        compat.exception_as(),
                        code[0:50]
                    ), **exception_kwargs)