Python字典 - 如何保持新值覆盖以前的值？ [英] Python dictionaries-How to keep the new value from overwriting the previous value?

问题描述

我想创建一个名为First（如First Name）的字典，它将存储许多通过一个函数存储在字典中的名字。这个想法是字典可以支持多个名称，

所以这里是我的问题：

当我添加字典的名称，然后我通过该函数添加第二个，以前的名称被最后覆盖。我该如何修补？我知道它涉及字典中的字典或嵌套条件。这是我的代码：

  def store（data，value）：
 data ['Names'] = {} 
 data ['Names'] ['first'] = {} 
 data ['Names'] ['first'] = {value} 
  pre> 
 
解决方案
转动 data ['Names'] ['first'] 在列表中并附加到它：
  data ['Names'] = {} 
 data ['Names '] ['first'] = [] 
 
 def store（data，value）：
 data ['Names'] ['first']。append（value）
  
 
I want to create a Dictionary called "First" (as in First Name) that will store numerous first names which are all stored in the dictionary  via a function. The idea is that the dictionary can support multiple names, 

so here is my problem:

When I add a name to the dictionary, then I go to add a second one via the function, the previous name is overwritten by the last. How do I mend this? I know it involves something like a dictionary within a dictionary, or nested conditionals. Here is my code:
def store(data,value):
    data['Names'] = {}
    data['Names']['first'] = {}
    data['Names']['first'] = {value}

解决方案
Turn data['Names']['first'] in a list and append to it:
data['Names'] = {}
data['Names']['first'] = []

def store(data, value):
    data['Names']['first'].append(value)


                        
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