检查字符串中是否包含某字符集合中的字符
任务:
检查字符串中是否出现了某个字符集合中的字符
解决方案:
方案一:
import itertoolsdef containAny(seq,aset):for item in itertools.ifilter(aset.__contains__,seq):return Truereturn Falseif __name__ == "__main__":l1 = list('python')l2 = set('x')print containAny(l1,l2)
方案二:
l1 = list('python') l2 = set('df') def containAny(seq,aset):for a in seq:if a in aset: return Truereturn False print containAny(l1,l2)
简化字符串的translate方法的使用
任务:
用字符串的translate方法来进行快速编码,将string.maketrans函数简单封装。
解决方案:
import string def translator(frm = '',to = '',delete = '' ,keep = None):if len(to) == 1:to = to*len(frm)trans = string.maketrans(frm, to)if keep is not None:allchars = string.maketrans('','')delete = allchars.translate(allchars,keep.translate(allchars,delete))def translate(s):return s.translate(trans,delete)return translate