""" python大小写字符互换.py http://www.51sjk.com/Upload/Articles/1/0/322/322532_20220817112205594.html 依山居 4:47 2015/12/15 """ s="sD8F8S88f899f9DiIujUUuj JhHUuH hH$%" def fn(x): if x.islower(): return x.upper() elif x.isupper(): return x.lower() else: return x result=''.join([fn(r) for r in list(s)]) print(result) """ 输出: Sd8f8s88F899F9dIiUJuuUJ jHhuUh Hh$% """
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