파이썬 노트 - csv 파일의 읽기 쓰기

csv 파일, 일거수일투족 데이터, 데이터 필드는 쉼표','로 구분

메모장, EXcel 등을 사용하여 열 수 있습니다.

import csv #  csv 

def csv_read_list():
    with open('test.csv', 'r', encoding='utf-8') as f:
        #  reader ，  
        reader = csv.reader(f)
        #  next 
        title = next(reader)
        print(title)
        #  ， 
        for i in reader:
            print(i)


def csv_write_list():
    headers = ['name', 'age', 'height']
    data1 = [' ', 18, 180]
    data2 = ['da ', 12, 170]
    with open('test.csv', 'w', encoding='utf-8', newline='') as f:
        #  writer 
        writer = csv.writer(f)
        #  
        writer.writerow(headers)
        #  ，  writerows 
        writer.writerow(data1)
        writer.writerow(data2)

def csv_read_dict():
    with open('test.csv', 'r', encoding='utf-8') as f:
        #  reader ，  
        reader = csv.DictReader(f)
        #  ， key 
        for i in reader:
            print(i)


def csv_write_dict():
    headers = ['name', 'age', 'height']
    data1 = {'name': ' ', 'age': 18, 'height': 180}
    data2 = {'name': ' da ', 'age': 12, 'height': 170}
    with open('test.csv', 'w', encoding='utf-8', newline='') as f:
        #  writer 
        writer = csv.DictWriter(f, headers)
        #  
        writer.writeheader()
        #  ，  writerows 
        writer.writerow(data1)
        writer.writerow(data2)