【发布时间】：2020-08-05 00:07:15
【问题描述】：
我正在从该 URL 抓取多个赛季的国家冰球联盟 (NHL) 数据：
https://www.hockey-reference.com/leagues/NHL_2018_skaters.html
我在这里只得到了几个实例，并尝试在整个 for 循环中移动我的 dict 语句。我也尝试过利用我在其他帖子上找到的解决方案，但没有成功。任何帮助表示赞赏。谢谢！
import requests
from bs4 import BeautifulSoup
import pandas as pd
dict={}
for i in range (2010,2020):
year = str(i)
source = requests.get('https://www.hockey-reference.com/leagues/NHL_'+year+'_skaters.html').text
soup = BeautifulSoup(source,features='lxml')
#identifying table in html
table = soup.find('table', id="stats")
#grabbing <tr> tags in html
rows = table.findAll("tr")
#creating passable values for each "stat" in td tag
data_stats = [
"player",
"age",
"team_id",
"pos",
"games_played",
"goals",
"assists",
"points",
"plus_minus",
"pen_min",
"ps",
"goals_ev",
"goals_pp",
"goals_sh",
"goals_gw",
"assists_ev",
"assists_pp",
"assists_sh",
"shots",
"shot_pct",
"time_on_ice",
"time_on_ice_avg",
"blocks",
"hits",
"faceoff_wins",
"faceoff_losses",
"faceoff_percentage"
]
for rownum in rows:
# grabbing player name and using as key
filter = { "data-stat":'player' }
cell = rows[3].findAll("td",filter)
nameval = cell[0].string
list = []
for data in data_stats:
#iterating through data_stat to grab values
filter = { "data-stat":data }
cell = rows[3].findAll("td",filter)
value = cell[0].string
list.append(value)
dict[nameval] = list
dict[nameval].append(year)
# conversion to numeric values and creating dataframe
columns = [
"player",
"age",
"team_id",
"pos",
"games_played",
"goals",
"assists",
"points",
"plus_minus",
"pen_min",
"ps",
"goals_ev",
"goals_pp",
"goals_sh",
"goals_gw",
"assists_ev",
"assists_pp",
"assists_sh",
"shots",
"shot_pct",
"time_on_ice",
"time_on_ice_avg",
"blocks",
"hits",
"faceoff_wins",
"faceoff_losses",
"faceoff_percentage",
"year"
]
df = pd.DataFrame.from_dict(dict,orient='index',columns=columns)
cols = df.columns.drop(['player','team_id','pos','year'])
df[cols] = df[cols].apply(pd.to_numeric, errors='coerce')
print(df)
输出
Craig Adams Craig Adams 32 ... 43.9 2010
Luke Adam Luke Adam 22 ... 100.0 2013
Justin Abdelkader Justin Abdelkader 29 ... 29.4 2017
Will Acton Will Acton 27 ... 50.0 2015
Noel Acciari Noel Acciari 24 ... 44.1 2016
Pontus Aberg Pontus Aberg 25 ... 10.5 2019
[6 rows x 28 columns]
【问题讨论】：
-
您只能获得总数据点的一小部分，因为 HTML 将表格分成多个部分。您需要为表的所有后续部分重新运行算法，直到第一个结束
标签： python web-scraping beautifulsoup data-science