__init__.py 文件源码

def parse_file(filename):
    with open(filename) as f:
        tokens = [t for t in generate_tokens(f.readline)
                  if t.type != tokenize.COMMENT and t.type != tokenize.NL]
        try:
            file_input.parse(tokens)
        except CustomParseError as err:
            token = tokens[err.orig_error.state.pos]
            lineno = token.start[0]
            print('Syntax error at line {}. Details:'.format(lineno))
            print('  ' + err.msg)