Reading and writing csv files-stack overflow

1. Read

Read the content in the file above and print:

1 import csv
2 
3 
4 rows = csv.reader(open('22.csv', 'r'))
5 for row in rows:
6     print(row)

The print result is as follows:

 

2. Write (list data)

. 1  Import CSV
 2  
. 3  
. 4  # to be written content 
. 5 head = [ ' Name ' , ' aged ' , ' city ' , ' Remarks ' ]
 . 6 rows = [
 . 7      [ ' Bob ' , 8 ' Beijing ' ],
 8      [ ' red ' , 7, ' Tianjin ' ]
 9  ]
 10  
. 11  # written
12 with open('22.csv', 'w',newline='') as f:
13     f_csv_writer = csv.writer(f)
14     f_csv_writer.writerow(head)
15     f_csv_writer.writerows(rows)

The write result is as follows:

 

3. Write (dictionary data)

 1 import csv
 2 
 3 
 4 headers = ['class', 'name', 'sex', 'height', 'year']
 5 rows = [
 6     {'class':1, 'name':'xiaoming', 'sex':'male', 'height':168, 'year':23},
 7     {'class':1, 'name':'erha', 'sex':'female', 'height':166, 'year':22}
 8 ]
 9 with open('22.csv', 'w',newline='') as f:
     f_csv =10 csv.DictWriter(f, headers)
11     f_csv.writeheader()
12     f_csv.writerows(rows)

The write result is as follows: