s1 = 'ABC'
s2 = '123'
s3 = 'xyz'
s = s1 + s2 + s3
for ch1 in s:
for ch2 in s:
for ch3 in s:
if ch1 != ch2 and ch1 != ch3 and ch2 != ch3:
print(ch1 + ch2 + ch3)
s2 = '123'
s3 = 'xyz'
s = s1 + s2 + s3
for ch1 in s:
for ch2 in s:
for ch3 in s:
if ch1 != ch2 and ch1 != ch3 and ch2 != ch3:
print(ch1 + ch2 + ch3)
2020-08-25
最新回答 / 禾希禾希
记录循环的次数，只要次数小于1，那么就return Nonedef func(param): x = 0 if isinstance(param,list): sum = 0 for item in param: if isinstance(item,int) or isinstance(item,float): ...
2020-08-24
r'...'表示法不能表示多行字符串，也不能表示包含'和 "的字符串,可以用r'''...'''表示
2020-08-24