Python文件在输入后立即退出

Question

我已经试着让这个程序运行大约30分钟了，但是每次我运行这个文件时，它都会在任何类型的输入后自动退出。 我不知道问题出在哪里，所以我将发布所有代码。 以下是我到目前为止的情况：

import os, time

os.system("color")
loading = 0
logged = 0
r = "r"
l = "l"
COLOR = {
    "PURPLE": "\033[95m",
    "BLUE": "\033[0;34m",
    "GREEN": "\033[0;32m",
    "RED": "\033[91m",
    "GRAY": "\033[0;39m",
    "CYAN": "\033[0;36m",
    "CLR": "\033[0m",
}

print(COLOR["GRAY"], "starting", COLOR["CLR"], "\bSh", COLOR["CYAN"], "\b\bi", COLOR["CLR"], "\b\bftOS...")

while loading <= 10:
    for rod in r'--//||\\':
        print(rod, rod, rod, rod, rod, rod, rod, rod, rod, rod, rod, end='\r')
        time.sleep(0.05)
        loading = loading + 1
###############################
yesno = input("register or login? (r/l) -> ")
if yesno == r:  register_a()
if yesno == l:  log_in()


# if yesno != "r" and yesno != "l": quit()
def register_a():
    print(COLOR["BLUE"], "\n\n new username: ", COLOR["CLR"])
    username = input("->  ")
    print(COLOR["RED"], "\n\n new password: ", COLOR["CLR"])
    password = input("->  ")
    print("writing credentialz.txt file..")

    f = open("credentialz.txt", "w")
    f.write(username)
    f.close()
    f = open("credentialz.txt", "a")
    f.write(password)
    f.close
    return username, password


def log_in():
    f = open("credentialz.txt", "a")
    a = f.readline()
    b = f.readline()
    f.close
    useratt = input("USERNAME: ")
    passatt = input("PASSWORD: ")
    f = open("credentialz.txt", "r")
    if useratt == a and passatt == b:
        print(COLOR["BLUE"], "LOGGED IN SUCCESSFULLY!", COLOR["CLR"])
        logged = 1
    else:
        print(COLOR["RED"], "WRONG USERNAME/PASSWORD!", COLOR["CLR"])

我正在Windows10上使用Python3.9

Answer 1

在log_in()函数中，尝试写入f.close()。你错过了括号