def __init__(self, config):
        self.filename = None
        self.config = config
        self.lineno = 0
        self.colno = 0
        self.lastc = None
        self.last_token = None
        self.commentchars = '#'
        self.whitespace = ' \t\r\n'
        self.quotes = '\'"'
        self.punct = ':-+*/%,.{}[]()@`$'
        self.digits = '0123456789'
        self.wordchars = WORDCHARS % '%s' # make a copy
        self.identchars = self.wordchars + self.digits
        self.pbchars = []
        self.pbtokens = []
        self.comment = None
dataset/ETHPy150Open twitterdev/twitter-for-bigquery/libs/config.py/ConfigReader.__init__/swapped operands of `%`