随机化字符串的大写和小写

Question

是否有一种更有效/更智能的方法来随机化字符串中的字母大写？像这样:

input_string = "this is my input string"
for i in range(10):
    output_string = ""
    for letter in input_string.lower():
        if (random.randint(0,100))%2 == 0:
            output_string += letter
        else:
            output_string += letter.upper()
    print(output_string)

输出:

thiS iS MY iNPUt strInG
tHiS IS My iNPut STRInG
THiS IS mY Input sTRINg
This IS my INput STRING
ThIS is my INpUt strIng
tHIs is My INpuT STRInG
tHIs IS MY inPUt striNg
THis is my inPUT sTRiNg
thiS IS mY iNPUT strIng
THiS is MY inpUT sTRing

Answer 1

你可以使用random.choice(),挑选str.upper和str.lower:

>>> from random import choice

>>> s = "this is my input string"
>>> lst = [str.upper, str.lower]

>>> ''.join(choice(lst)(c) for c in s)
'thiS IS MY iNpuT strIng'

>>> [''.join(choice(lst)(c) for c in s) for i in range(3)]
['thiS IS my INput stRInG', 'tHiS is MY iNPuT sTRinG', 'thiS IS my InpUT sTRiNg']