PYTHON168 's study notes 5

About the operation of the CSV file.

The Python standard library has a CSV library that is easy to use.

1 ImportCSV2 3With open ('Pingan.csv','RB') as RF:4Reader =csv.reader (RF) #读操作5With open ('Pingan2.csv','WB') as WF:6writer =Csv.writer (WF)7headers =Reader.next ()8 Writer.writerow (headers) #写操作9          forRowinchReader:Ten             ifRow[0] <'2016-01-01': #满足条件就退出循环 One                  Break A             ifInt (row[5]) >= 50000000: #对特定数据的判断 -Writer.writerow (Row)

About the operation of the JSON file.

There are also JSON libraries in the Python standard library, which are also easy to operate.

1 ImportJSON2 3L = (1, 2,'ABC',{'name':'John',' Age': 18})4 5With open ('Demo.json','WB') as F:6 json.dump (l,f)7     8With open ('Demo.json','RB') as F:9R =json.load (f)  

PYTHON168 's study notes 5