一种冗长的问题,我可能只需要有人指出我在正确的方向。我正在构建一个网页抓取工具,以便从ESPN网站上获取篮球运动员信息。 URL结构很简单,因为每个玩家卡在URL中都有一个特定的ID。为了获得信息,我正在编写1〜6000的循环来从他们的数据库中抓取玩家。我的问题是,是否有更有效的方式来做到这一点?优化我的Python刮刀
from bs4 import BeautifulSoup
from urllib2 import urlopen
import requests
import nltk
import re
age = [] # Empty List to store player ages
BASE = 'http://espn.go.com/nba/player/stats/_/id/' # Base Structure of Player Card URL
def get_age(BASE): #Creates a function
#z = range(1,6000) # Create Range from 1 to 6000
for i in range(1, 6000): # This is a for loop
BASE_U = BASE + str(i) + '/' # Create URL For Player
r = requests.get(BASE_U)
soup = BeautifulSoup(r.text)
#Prior to this step, I had to print out the soup object and look through the HTML in order to find the tag that contained my desired information
# Get Age of Players
age_tables = soup.find_all('ul', class_="player-metadata") # Grabs all text in the metadata tag
p = str(age_tables) # Turns text into a string
#At this point I had to look at all the text in the p object and determine a way to capture the age info
if "Age: " not in p: # PLayer ID doesn't exist so go to next to avoid error
continue
else:
start = p.index("Age: ") + len("Age: ") # Gets the location of the players age
end = p[start:].index(")") + start
player_id.append(i) #Adds player_id to player_id list
age.append(p[start:end]) # Adds player's age to age list
get_age(BASE)
任何帮助,即使很小,将不胜感激。即使它只是指着我在正确的方向,而不一定是直接的解决方案
感谢, 本
啊我听说过多线程。你知道易于遵循在线教程吗? – mangodreamz
我个人认为'multiprocessing'库的文档是一个很好的开始。如果文档对您来说不够好,您可以查看该库的指南。 –