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csvファイルを読み込んで書き込む

Python
Python3

Posted at 2020-02-16

import csv

with open('test.csv', 'w+', newline='') as csv_file:
    fieldnames = ['Name', 'Count']
    writer = csv.DictWriter(csv_file, fieldnames=fieldnames)
    writer.writeheader()
    writer.writerow({'Name':'A', 'Count':1})
    writer.writerow({'Name':'B', 'Count':2})
    
    csv_file.seek(0)
    
    reader = csv.DictReader(csv_file)
    
    for row in reader:
        print(row['Name'], row['Count'])

実行結果

A 1
B 2

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