为什么我无法迭代我的第一个 FOR 循环

Question

我正在编写一个 python 代码来查找具有特定规则的所有可能的密码组合

应包含字母 A-Z a-z
应包含数字 0-9
应包含特殊符号
密码首字母必须大写

from itertools import permutations

pw = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789[@_!#$%^&*()<>?/\|}{~:]"
firstchar = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"

c = permutations(pw, 2) #3 is the password length for providing sample output quickly
f=open("password.txt","w+")
f.truncate(0)

for x in firstchar:
    for i in c: 
        current_pw = x + "".join(i)
        f.write( "\t" + current_pw + "\n" )

** 输出仅包含从 A 开始的密码，并且停止不会针对 B、C 进行迭代... **

Answer 1

我认为 permutation 在第一个循环后退出。所以你在每个循环中定义c。

from itertools import permutations

pw = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789[@_!#$%^&*()<>?/\|}{~:]"
firstchar = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"

f=open("password.txt","w+")
f.truncate(0)

for x in firstchar:
    c = permutations(pw, 2)          # c is defined here
    for i in c: 
        current_pw = x + "".join(i)
        f.write( "\t" + current_pw + "\n" )

希望能帮到你

为什么我无法迭代我的第一个 FOR 循环

Why I am not able to Iterate my first FOR loop

for-loop

nested-loops

python-3.x