Python，依赖于 int 的 For 循环

Question

我有一些代码可以打印每个可能的字母组合，字长为 3。

letters = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t"    ,"u","v","w","x","y","z"]
for x in range(0,26):
    for y in range(0,26):
        for z in range(0,26):
            print(letters[x],letters[y],letters[z])

这段代码运行良好，但如果我想查看每个 4 个字母的单词，那么我将不得不添加另一个 for 循环，并且对于 5 个字母等等。

我想知道如何根据用户输入进行一定数量的 for 循环。

Answer 1

你 itertools.product 和 *repeat=n* 其中 n 是多少循环：

from itertools import  product
for p in product(letters,repeat=3):
    print(p)