python - 从 python 列表中删除重复的 JSON 对象

Question

我有一个字典列表，其中某个特定值重复多次，我想删除重复值。

我的 list :

te = [
      {
        "Name": "Bala",
        "phone": "None"
      },
      {
        "Name": "Bala",
        "phone": "None"
      },
      {
        "Name": "Bala",
        "phone": "None"
      },
      {
        "Name": "Bala",
        "phone": "None"
      }
    ]

删除重复值的函数:

def removeduplicate(it):
    seen = set()
    for x in it:
        if x not in seen:
            yield x
            seen.add(x)

当我调用这个函数时，我得到了generator object。

<generator object removeduplicate at 0x0170B6E8>

当我尝试遍历生成器时，我得到了 TypeError: unhashable type: 'dict'

有没有办法删除重复值或遍历生成器

Answer 1

您可以通过字典理解轻松删除重复键，因为字典不允许重复键，如下所示-

te = [
      {
        "Name": "Bala",
        "phone": "None"
      },
      {
        "Name": "Bala",
        "phone": "None"
      },
      {
        "Name": "Bala",
        "phone": "None"
      },
      {
        "Name": "Bala",
        "phone": "None"
      },
      {
          "Name": "Bala1",
          "phone": "None"
      }      
    ]

unique = { each['Name'] : each for each in te }.values()

print unique

输出-

[{'phone': 'None', 'Name': 'Bala1'}, {'phone': 'None', 'Name': 'Bala'}]