write_csv

import csv

# newline='' 不会有空行 w/a 覆盖/追加读写

file =open('tttt.csv','w',encoding='utf8',newline='')

w = csv.writer(file,dialect='excel')

# 写入一行数据

w.writerow([1,2,3])

data = []

for iin range(10):

line = ['a'+str(i),i]

data.append(line)

# 写入多行数据

w.writerows(data)

file.close()