python - 将其写入文件的正确语法是什么？

Question

def guessingTime(answer, username):
    vdfile = open("victorydefeat.txt", "a")
    now = time.asctime(time.localtime(time.time()))
    victory = username + "successfully guess" + answer + "on" + now
    defeat = username + "was unable to guess" + answer + "on" + now
    print("That's 20! Time to guess.")
    guess = input("Is it a(n): ")
    if guess.lower() == answer:
        print("You got it! Congratulations!")
        vdfile.write(victory)
        vdfile.write("\n")
    else:
        print("Sorry, but the answer was", answer)
        vdfile.write(now)
        vdfile.write("\n")
    vdfile.close()

def main():
    print("Welcome to 20 questions! The game where I (your humble program) will think of an object and you (the beloved user) will try to guess it!")
    username = print(input(("Now, before we begin, I'd like to know your name (for recording purposes): ")))
    infile1, infile2, answer = getAnswer()
    #startAsking(infile1, infile2)
    guessingTime(answer, username)

main()

“victory =”行的错误消息是“+= 'NoneType' 和 'str' 不支持的操作数类型”。我想写:“成功猜中”。我该怎么办？

Answer 1

print() 不返回值。因此用户名被设置为None。

input() 将打印传递的字符串并返回输入的文本。您只需要以下内容:

username = input("Now, before we begin, I'd like to know your name (for recording purposes): ")