def all_variations(word: str) -> list:
    '\n    Produce all single-character leet variations of a string\n    '
    ans = ['']
    for leet_letter in [ASCII_SUBS[i] for i in word]:
        ans = [(x + y) for x in ans for y in leet_letter]
    return ans
Produce all single-character leet variations of a string
def all_variations(word: str) -> list:
    '\n    \n    '
    ans = []
    for leet_letter in [ASCII_SUBS[i] for i in word]:
        ans = [(x + y) for x in ans for y in leet_letter]
    return ans