我正在编写一个Python代码，从一个输入文件中提取所有url，其中包含来自Twitter(Tweets)的内容或文本。然而，在这样做的时候，我意识到在python列表中提取的几个URL在结尾处有“特殊字符”或“标点符号”，因此我无法通过它们进一步解析来获得基本URL链接。我的问题是：“如何识别和删除列表中每个URL末尾的特殊字符”？在
电流输出：['/GVNyqWEu5u', '/GVNyqWEu5u'', '/GVNyqWEu5u@#', '/GVNyqWEu5u"']
期望输出：
^{pr2}$
您应该注意，不是“当前输出”列表中的所有元素都在末尾有特殊字符/标点符号。任务是识别并仅从拥有这些字符/标点的列表元素中删除这些字符/标点符号。在
我使用以下Regex从Tweet文本中提取twitter url:lst = re.findall('(http.?://[^\s]+)', text)
我是否可以删除此步骤末尾的特殊标点符号？在
完整代码：import urllib.request, urllib.parse, urllib.error
from bs4 import BeautifulSoup
from socket import timeout
import ssl
import re
import csv
ctx = ssl.create_default_context()
ctx.check_hostname = False
ctx.verify_mode = ssl.CERT_NONE
count = 0
file = "Test.CSV"
with open(file,'r', encoding='utf-8') as f, open('output_themes_1.csv', 'w', newline='', encoding='utf-8') as ofile:
next(f)
reader = csv.reader(f)
writer = csv.writer(ofile)
fir = 'S.No.', 'Article_Id', 'Validity', 'Content', 'Geography', 'URL'
writer.writerow(fir)
for line in reader:
count = count+1
text = line[5]
lst = re.findall('(http.?://[^\s]+)', text)
if not lst:
x = count, line[0], 'Empty List', text, line[8], line[6]
print (x)
writer.writerow(x)
else:
try:
for url in lst:
try:
html = urllib.request.urlopen(url, context=ctx, timeout=60).read()
#html = urllib.request.urlopen(urllib.parse.quote(url, errors='ignore'), context=ctx).read()
soup = BeautifulSoup(html, 'html.parser')
title = soup.title.string
str_title = str (title)
if 'Twitter' in str_title:
if len(lst) > 1: break
else: continue
else:
y = count, line[0], 'Parsed', str_title, line[8], url
print (y)
writer.writerow(y)
except UnicodeEncodeError as e:
b_url = url.encode('ascii', errors='ignore')
n_url = b_url.decode("utf-8")
try:
html = urllib.request.urlopen(n_url, context=ctx, timeout=90).read()
soup = BeautifulSoup(html, 'html.parser')
title = soup.title.string
str_title = str (title)
if 'Twitter' in str_title:
if len(lst) > 1: break
else: continue
else:
z = count, line[0], 'Parsed_2', str_title, line[8], url
print (z)
writer.writerow(z)
except Exception as e:
a = count, line[0], str(e), text, line[8], url
print (a)
writer.writerow(a)
except Exception as e:
b = count, line[0], str(e), text, line[8], url
print (b)
writer.writerow(b)
print ('Total Rows Analyzed:', count)
