【Python】 list dict数据合并汇总demo

【Python】 list dict数据合并汇总demo

需求：

1. 将列表a,根据company进行分类，同一个company的id放到一个列表里面

   数据：

	a = [{
	      "id": 214,
	      "company": "CN920A"
	    },
	    {
	      "id": 225,
	      "company": "CN920A"
	    },
	    {
	      "id": 239,
	      "company": "CN920A"
	    },
	    {
	      "id": 226,
	      "company": "CN920E"
	    },
		{
	      "id": 236,
	      "company": "CN920E"
	    },
		{
	      "id": 194,
	      "company": "CN920E"
	    },
		{
	      "id": 193,
	      "company": "CN930D"
	    },
		{
	      "id": 192,
	      "company": "CN930D"
	    },
		{
	      "id": 191,
	      "company": "CN940F"
	    },
		{
	      "id": 190,
	      "company": "CN940F"
	    }
		]

代码：

def data_merge(a):
    classified_case_sensitive = {}

    for item in a:
        company = item['company']
        item_id = item['id']

        if company not in classified_case_sensitive:
            classified_case_sensitive[company] = []

        classified_case_sensitive[company].append(item_id)
    print(classified_case_sensitive)


if __name__ == '__main__':
    data_merge(a)

结果：

{‘CN920A’: [214, 225, 239], ‘CN920E’: [226, 236, 194], ‘CN930D’: [193, 192], ‘CN940F’: [191, 190]}