Python、repl.it - 未使用 csv.writer 和 writer.writerow 将详细信息写入文件

Question

我有以下 repl.it 程序，请注意该程序的注册部分之前工作正常，但现在停止工作了。

它到了最后说“写入文件”的地方，但由于没有任何内容写入文本文件，实际的 write-rows 命令不知何故被跳过。

整个程序在这里：

https://repl.it/@oiuwdeoiuas/Matchmakingskills-1

代码的相关部分如下，尽管可能还有其他因素（因此提供了整个代码）

def register():
    print("===Register====")
    print("First things first, sign up and tell us a little about yourself")
    with open("dating.txt","a") as fo: 
        writer=csv.writer(fo)        
        firstname=input("Enter first name:")
        lastname=input("Enter last name:")
        username=firstname+lastname[0]+"bird"
        print("Your automatically generated username is:",username)
        password=input("Enter password:")
        gender=input("Enter gender")
        email=input("Enter email:")
        dob=input("Enter date of birth in format dd/mm/yy:")
        beliefs=input("Enter beliefs")
        strengthslist=["patience","efficiency","sensitivity","frankness","submissiveness","leadership","timekeeping","laidback"]
        print(strengthslist)
        strengths=input("Enter your top strength: (select from the above list)")
        contactcount=0
        writer.writerow([username,password,firstname,lastname,gender,email,dob,beliefs,strengths,contactcount])
        print("written to file")
        mainmenu()

Answer 1

我可能是错的，但是你需要 writerows 而不是 writerow 因为 writerows 像你的一样接受列表而 writerow 接受列。

Answer 2

您正在尝试读取一个仍处于打开状态的文件：

def register():
    # ...
    with open("dating.txt","a") as fo: 
        # ...
        print("written to file")
        # At this point, "dating.txt" hasn't been written to
        # the next call to open it that occurs here will
        # see the state of the file either partially written, or before
        # the row is written at all
        mainmenu()

有几个解决方案。最快的方法是在此处取消缩进 mainmenu() 一级：

def register():
    # ...
    with open("dating.txt","a") as fo: 
        # ...
        print("written to file")
    # dating.txt has been closed now, it's safe to read it
    mainmenu()

当下一个方法出现并尝试读取文件时，它将以这种方式包含预期的数据。

Python、repl.it - 未使用 csv.writer 和 writer.writerow 将详细信息写入文件

Python, repl.it - details are not being written to file using csv.writer and writer.writerow

python

csv

file-writing