Question

我正在从新闻网站抓取数据并将其保存到标题，新闻和img变量中，然后写入csv文件，但是我在每个抓取行中都重复了列名，我只想打印时间列名，然后保存我的抓取数据请帮助我这是代码

with open(r'C:\Users\Zain Noman\Desktop\DN-data.csv', 'a+', newline='') as file:
    writer = csv.writer(file, delimiter=',')
    writer.writerow(['title','news','img-url'])
    writer.writerows([mylist])
    file.close()

see this output pic

Answer 1

我会这样

file = open('C:\Users\Zain Noman\Desktop\DN-data.csv', 'a+')
writer  = csv.writer(file) #csv wrapper
writer.writerow(['title','news','img-url']) #write the header once
writer.writerows(mylist) #write the the entire list assuming its a list of lists
file.close() #close the file connection

Answer 2

在writerow行使用此答案之前，我已经找到了答案及其简单答案

with open('C:Desktop\DN-data.csv', 'a+', newline='') as file:
writer = csv.writer(file, delimiter=',')
if file.tell() == 0
  writer.writerow(['title','news','img-url'])
writer.writerows([mylist])
file.close()

如何在python3的csv文件中一次写入列

2 个答案: