Python CSV Reader/Writer/DictReader/DictWriter例子

import csv
rows = [['1', '2', '3'], ['4', '5', '6']]
with open('my.csv', 'w+', newline='') as csv_file:
    writer = csv.writer(csv_file)
    for row in rows:
        writer.writerow(row)

with open('my.csv', 'r+', newline='') as csv_file:
    reader = csv.reader(csv_file)
    for row in reader:
        print(str(row))


>>> import csv
>>> with open(r'C:\Users\Administrator\Desktop\tongcheng1.csv') as csvfile:
	reader=csv.DictReader(csvfile)
	for row in reader:
		print(row['title'],row['price'],row['date'],row['area'])




>>> datas=[{'title':'我喜欢你','price':'0000','date':'20190-5-04','area':'pudong district'}]
>>> with open(r'C:\Users\Administrator\Desktop\tongcheng1.csv','w') as csvfile:
	writer=csv.DictWriter(csvfile,fieldnames=['title','price','date','area'])
	writer.writeheader()
	for data in datas:
		writer.writerow(data)

		
38


import csv

dictionaries = [{'age': '30', 'name': 'John', 'last_name': 'Doe'}, {'age': '30', 'name': 'Jane', 'last_name': 'Doe'}]
with open('my.csv', 'w+') as csv_file:
    headers = [k for k in dictionaries[0]]
    writer = csv.DictWriter(csv_file, fieldnames=headers)
    writer.writeheader()
    for dictionary in dictionaries:
        writer.writerow(dictionary)

with open('my.csv', 'r+') as csv_file:
    reader = csv.DictReader(csv_file)
    print(str([row for row in reader]))

参考：https://blog.csdn.net/ko_tin/article/details/72627266
https://blog.csdn.net/tomatomas/article/details/81005503