如何在 python 中使用 append 添加文本

Question

So I created python password generator. I want the password created to add itself to a txt file but I cant find a way. Heres the code:

 import random passlen = int(input("enter the length of password ")) s="abcdefghijklmnopqrstuvwxyz01234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ?@#$%^&*()." p = "".join(random,sample(s.passlen )) file = open("pass,txt". "a") file:write("Password. ") file.close() print(p) file = open("pass,txt". "r") print("Output of Readlines after appending") print(file.read()) print() file close()

Answer 1

with open("pass.txt", "r") as myfile:
myfile.write(p)

hope this help

Answer 2

You are not writing p into file . Try:

import random

passlen = 10
s = "abcdefghijklmnopqrstuvwxyz01234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ!@#$%^&*()?"

p = ''.join(random.sample(s, passlen))

with open('pass.txt', 'a') as f:
    print(f"password: {p}", file=f)

with open('pass.txt', 'r') as f:
    print("Now the contents of pass.txt:")
    print(f.read())

Note that with open is preferred (to open ... close ) in general.