使用BeautifulSoup爬取NFL伤病页面遇KeyError，需优化无伤病逻辑

Hey there, let's sort out that KeyError you're hitting while scraping the Pro Football Reference injury page. The issue is straightforward: when a <td> tag doesn't have the data-tip attribute, trying to access it directly with tr.td["data-tip"] throws a KeyError—your if-else check never even gets to run because the error happens before that line.

The Fix: Use .get() for Safe Attribute Access #

BeautifulSoup's Tag object has a .get() method that lets you safely retrieve attributes without triggering errors. If the attribute doesn't exist, it returns None (or a default value you specify), which lets you handle missing data cleanly. Here's your revised code:

from urllib.request import urlopen as uReq
from bs4 import BeautifulSoup as soup

my_url = 'https://www.pro-football-reference.com/teams/nwe/2013_injuries.htm'
# Opening connection and grabbing the page
uClient = uReq(my_url)
page_html = uClient.read()
uClient.close()

# HTML parsing
page_soup = soup(page_html, "html.parser")
containers = page_soup.find("tbody")
players = containers.find_all("tr")

for tr in players:
    # Extract player name from <th> tags
    name = [th.text for th in tr.find_all("th")]
    # Get week number (data-stat is guaranteed to exist)
    week = tr.td["data-stat"]
    # Safely get injury status: use "NA" if data-tip doesn't exist
    injury = tr.td.get("data-tip", "NA")
    # Print the result in your desired format
    print([name, injury, week])

What Changed? #

• Replaced injury = tr.td["data-tip"] with injury = tr.td.get("data-tip", "NA"): This line tries to fetch the data-tip attribute; if it doesn't exist, it automatically uses "NA" as the fallback value. No more KeyError stopping your loop!
• Renamed player to players for better readability (since we're working with a list of player rows).

Example Output #

Running this code will produce exactly the output you want, including all players without interruption:

[['Danny Amendola'], 'Questionable: hamstring', 'week_1']
[['Armond Armstead'], 'Out: infection', 'week_1']
[['Kyle Arrington'], 'NA', 'week_1']
# ... all remaining players will be printed correctly

内容的提问来源于stack exchange，提问作者Kevin