У меня есть данные в этом формате в файле:
{"field1":249449,"field2":116895,"field3":1,"field4":"apple","field5":42,"field6":"2019-07-01T00:00:10","metadata":"","frontend":""}
{"field1":249448,"field2":116895,"field3":1,"field4":"apple","field5":42,"field6":"2019-07-01T00:00:10","metadata":"","frontend":""}
{"field1":249447,"field2":116895,"field3":1,"field4":"apple","field5":42,"field6":"2019-07-01T00:00:10","metadata":"","frontend":""}
{"field1":249443,"field2":116895,"field3":1,"field4":"apple","field5":42,"field6":"2019-07-01T00:00:10","metadata":"","frontend":""}
{"field1":249449,"field2":116895,"field3":1,"field4":"apple","field5":42,"field6":"2019-07-01T00:00:10","metadata":"","frontend":""}
Здесь каждая запись представляет строку.Я хочу иметь количество строк по отношению к значению в первом поле, например:
249449 : 2
249448 : 1
249447 : 1
249443 : 1
Как я могу получить это?