更新保存在python文件中的python字典

Question

下午好，

我有一个使用以下代码创建的python字典文件：

playerdict = {('john','denver'):12345,('keneith','Noisewater'):23456}

字典很长，所以我将它保存到python文件中。

with open('playerdict.py','w') as file:
    file.write("playerdict = { \n")
    for k in sorted (playerdict.keys()):
        file.write("%s:%s, \n" % (k, playerdict[k]))
    file.write("}")

我现在可以使用以下命令导入字典：

from playerdict import playerdict

用新播放器更新字典的最Python方式是什么？例如我要添加k，v（'johhny B'，good），34567。是更新playerdict然后重写整个文件的唯一方法，还是有一种pythonic的方法将名称写入文件，而无需每次添加名称时都将整个字典重新写入文件。

非常感谢。

Answer 1

更改

with open('playerdict.py','w') as file:

to

with open('playerdict.py','a') as file:


Python File Modes
Mode    Description
'r'     Open a file for reading. (default)
'w'     Open a file for writing. Creates a new file if it does not exist or truncates the file if it exists.
'x'     Open a file for exclusive creation. If the file already exists, the operation fails.
'a'     Open for appending at the end of the file without truncating it. Creates a new file if it does not exist.
't'     Open in text mode. (default)
'b'     Open in binary mode.
'+'     Open a file for updating (reading and writing)