Question

即使输入正确，我的代码也拒绝验证输入的用户名和密码。

以下包含代码；我在哪里出错了？如果是这样，您能告诉我在哪里吗？

干杯。

import time

print ("Before playing, you must register.")
time.sleep(1)
username = open("username.txt","w+")
password = open("password.txt","w+")

print ("Please enter your desired username.")
username_input = input("> ")
print ("Please enter your desired password.")
password_input = input("> ")

username.write(username_input)
password.write(password_input)
username.close()
password.close()

time.sleep(1)
print ("Now, we must authenticate your username and password.")
time.sleep(0.5)
print ("Please input your username.")
u_input = input ('> ')
print ("Please input your password.")
p_input = input ('> ')
username.open("username.txt","r")
password.open("password.txt","r")
u_contents = username.read()
p_contents = password.read()
if u_input == u_contents:
  print ("Username authenticated.")

if p_input == p_contents:
  print ("Password authenticated.")

else:
  print ("Incorrect username or password.")

username.close()
password.close()

Answer 1

即使您调用了write()，内容实际上尚未被写入。在文件关闭（或刷新）或程序退出之前，文件内容不会写入磁盘。

在写入文件后关闭文件。

Answer 2

由于某些原因，w+无法正常工作。我正在发布已更改您的完整工作代码。在导入时间为with/as的情况下使用open()总是很有用的

import time

print ("Before playing, you must register.")
time.sleep(1)

print ("Please enter your desired username.")
username_input = input("> ")

print ("Please enter your desired password.")
password_input = input("> ")

with open('username.txt', 'w') as u:
        u.write(username_input)
        u.flush()
        u.close()

with open('password.txt', 'w') as p:
    p.write(password_input)
    p.flush()
    p.close()

time.sleep(1)
print ("Now, we must authenticate your username and password.")
time.sleep(0.5)
print ("Please input your username.")
u_input = input ('> ')
print ("Please input your password.")
p_input = input ('> ')

username=''
password=''
with open('xx.txt', 'r') as u:
        username = u.read()
        u.close()

with open('xxx.txt', 'r') as p:
    password = p.read()
    p.close()

if u_input == username:
  print ("Username authenticated.")

if p_input == password:
  print ("Password authenticated.")

else:
  print ("Incorrect username or password.")

输出：

C:\Users\Documents>py test.py
Before playing, you must register.
Please enter your desired username.
> mike
Please enter your desired password.
> mike123
Now, we must authenticate your username and password.
Please input your username.
> mike
Please input your password.
> mike123
Username authenticated.
Password authenticated.

Python密码拒绝通过验证

2 个答案: