如何在 python3 中的 csv 文件中写入一次列

Question

我正在从新闻网站抓取数据并保存到标题、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

我会这样做

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

我在 writerow 行使用这个

之前找到了答案，它很简单

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 中的 csv 文件中写入一次列

how to write column one time in csv file in python3

python

csv

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