Question

我编写了一个小密码生成器，您可以将密码及其服务保存在名为“password.txt”的文件中。每次运行程序时，文件都保持空白。当我删除文件并再次运行程序时，文件“password.txt”已创建但仍为空白。

import random

letters = "1 2 3 4 5 6 7 8 9 Q W E R T Z U I O P A S D F G H J K L Y X C V B N M q w e r t z u i o p a s d f g h j k l y x c v b n m : ; , . 0".split()

def checkNumb(string):
    for i in string:
        x = i.isdigit()
        if x == True:
            return True

def createPassword():
    global letters
    password = ""
    i = 0
    passLength = random.randint(7, 10)
    while i < passLength:
        passLetter = random.choice(letters)
        password += passLetter
        i += 1
    x = checkNumb(password)
    if x != True:
        password = createPassword()
    return password

print("What is the name of the service?")
service = input()
password = createPassword()
print(password, "will be your password for", service)

file = open("password.txt","a")
file.write(service + ": " + password)
file.close()

另外，因为我是初学者，如果有人能指出我在这段代码中可以做的一些改进，那将是一个很大的帮助。

编辑：while语句上的缩进错误只是我在将代码复制到此处时犯的错误。该程序没有缩进错误。感谢asongtoruin提醒我。

Answer 1

只是一个小的缩进错误

import random

letters = "1 2 3 4 5 6 7 8 9 Q W E R T Z U I O P A S D F G H J K L Y X C V B N M q w e r t z u i o p a s d f g h j k l y x c v b n m : ; , . 0".split()

def checkNumb(string):
    for i in string:
        x = i.isdigit()
        if x == True:
            return True

def createPassword():
    global letters
    password = ""
    i = 0
    passLenght = random.randint(7, 10)
    while i < passLenght:
        passLetter = random.choice(letters)
        password += passLetter
        i += 1
    x = checkNumb(password)
    if x != True:
        password = createPassword()
    return password

print("What is the name of the service?")
service = input()
password = createPassword()
print(password, "will be your password for", service)

file = open("password.txt","a")
file.write(service + ": " + password)
file.close()

这有效，请查看createPassword（）

中的while缩进

输出

python write_file.py
What is the name of the service?
service1
SCawELnU7f will be your password for service1

文件内容：

service1: uj.voSK38

另请参阅此链接，了解文件追加差异

Opening a file for append

Answer 2

经过测试的while i < passLenght:代码缩减一次，并且它以inteneded

的形式工作

为什么Python不写入文件？

2 个答案: