下面是一個scraper，它遍歷兩個網站，獲取團隊的花名冊信息，將信息放入一個數組中，然后將數組導出到CSV文件中。一切都很好，但唯一的問題是每次scraper移動到第二個網站時，csv文件中的writerow頭會重復出現。當scraper在多個網站中循環時，是否可以調整代碼的CSV部分，使標題只出現一次？提前謝謝！在import requests

import csv

from bs4 import BeautifulSoup

team_list={'yankees','redsox'}

for team in team_list:

page = requests.get('http://m.{}.mlb.com/roster/'.format(team))

soup = BeautifulSoup(page.text, 'html.parser')

soup.find(class_='nav-tabset-container').decompose()

soup.find(class_='column secondary span-5 right').decompose()

roster = soup.find(class_='layout layout-roster')

names = [n.contents[0] for n in roster.find_all('a')]

ids = [n['href'].split('/')[2] for n in roster.find_all('a')]

number = [n.contents[0] for n in roster.find_all('td', index='0')]

handedness = [n.contents[0] for n in roster.find_all('td', index='3')]

height = [n.contents[0] for n in roster.find_all('td', index='4')]

weight = [n.contents[0] for n in roster.find_all('td', index='5')]

DOB = [n.contents[0] for n in roster.find_all('td', index='6')]

team = [soup.find('meta',property='og:site_name')['content']] * len(names)

with open('MLB_Active_Roster.csv', 'a', newline='') as fp:

f = csv.writer(fp)

f.writerow(['Name','ID','Number','Hand','Height','Weight','DOB','Team'])

f.writerows(zip(names, ids, number, handedness, height, weight, DOB, team))

總結

以上是生活随笔為你收集整理的csv python 只写一次_在Python CSV Writer循环中写入一次头的全部內容，希望文章能夠幫你解決所遇到的問題。

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