from urllib.parse import urljoin, urlparse
BPatterns don’t expose every feature of the rewrite engine yet, but many are already supported, including full method patterns via #bmethod.
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^[a-zA-Z0-9.!#$%&’*+/=?^_{|}~-]+@[a-zA-Z0-9-]+(?:.[a-zA-Z0-9-]+)+$` (263 291)
（三）旅客车辆包括该车辆所载行李灭失或者损坏的，每一车辆不超过10000计算单位；