Python

Question

我知道这与换行标记有关，但为什么我的程序无法在我的外部文件中找到 username/password 匹配项？

username = input("Please enter your username: ")
password = input("Please enter your password: ")
file = open("UsernamesPasswords.txt", "r")
for loop in file:
    line = file.readline()
    data = line.split(",")
    print(data)
    if username == data[0] and password == data[1]:
        print("That's a match")
    else:
        print("That's not a match!")
        break
file.close()

Answer 1

假设 UsernamesPasswords.txt 看起来像这样：

username_1,password_1
username_2,password_2
username_3,password_3

我们可以写代码：

username_input = input("Please enter your username: ")
password_input = input("Please enter your password: ")
file = open("UsernamesPasswords.txt", "r")
contents = file.read()
file.close()

for line_index, line in enumerate(contents.splitlines()):
    parts = line.strip().split(",")

    if len(parts) != 2:
        # Incorrect line
        continue

    username, password = parts

    if username == username_input and password == password_input:
        print(f"That's a match, at line {line_index}.")
    else:
        print(f"That's not a match, at line {line_index}.")
        break

Python - 匹配来自外部文件的数据（用户名密码）

Python - matching data from an external file (username password)

external