[英]Permutation lowercase and uppercase in python
I want this result but not by string ,by input() and Number of characters unknown!我想要这个结果,但不是通过字符串,通过 input() 和未知字符数!
mystring = 'abcd'
for a in (mystring[0].upper(), mystring[0].lower()):
for b in (mystring[1].upper(), mystring[1].lower()):
for c in (mystring[2].upper(), mystring[2].lower()):
for d in (mystring[3].upper(), mystring[3].lower()):
print(a+b+c+d)
One approach using swapcase
and itertools.permutation:使用swapcase
和 itertools.permutation 的一种方法:
from itertools import product
mystring = 'abcd'
cases = zip(*[mystring, mystring.swapcase()])
for permutation in product(*cases):
print("".join(permutation))
Output输出
abcd
abcD
abCd
abCD
aBcd
aBcD
aBCd
aBCD
Abcd
AbcD
AbCd
AbCD
ABcd
ABcD
ABCd
ABCD
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