c=str(input('请输入10个字符:')) for i in c: if i.isupper(): print(i.lower(),end='') elif i.islower(): print(i.upper(),end='') else: print(i,end='')
#请输入10个字符:aaasssddd!
#AAASSSDDD!
c=str(input('请输入10个字符:')) for i in c: if i.isupper(): print(i.lower(),end='') elif i.islower(): print(i.upper(),end='') else: print(i,end='')
#请输入10个字符:aaasssddd!
#AAASSSDDD!