.standard_regexps returns a list of "standard" regexps, including elements named valid_package_name and valid_package_version with the obvious meanings. The regexps are not anchored.
.standard_regexps返回一个“标准”正则表达式的列表,包括元素命名valid_package_name和valid_package_version具有明显的意义,。没有固定的正则表达式。