Python Unicode正则表达式

我使用的是Python2.4,unicode正则表达式有一些问题。我试着为我的问题提供一个非常清晰和简洁的例子。看起来Python如何识别不同的字符编码存在一些问题,或者我的理解有问题。非常感谢您的关注!

#!/usr/bin/python
#
# This is a simple python program designed to show my problems with regular expressions and character encoding in python
# Written by Brian J. Stinar
# Thanks for the help! 

import urllib # To get files off the Internet
import chardet # To identify charactor encodings
import re # Python Regular Expressions 
#import ponyguruma # Python Onyguruma Regular Expressions - this can be uncommented if you feel like messing with it, but I have the same issue no matter which RE's I'm using

rawdata = urllib.urlopen('http://www.cs.unm.edu/~brian.stinar/legal.html').read()
print (chardet.detect(rawdata))
#print (rawdata)

ISO_8859_2_encoded = rawdata.decode('ISO-8859-2') # Let's grab this as text
UTF_8_encoded = ISO_8859_2_encoded.encode('utf-8') # and encode the text as UTF-8
print(chardet.detect(UTF_8_encoded)) # Looks good

# This totally doesn't work, even though you can see UNSUBSCRIBE in the HTML
# Eventually, I want to recognize the entire physical address and UNSUBSCRIBE above it
re_UNSUB_amsterdam = re.compile(".*UNSUBSCRIBE.*", re.UNICODE)
print (str(re_UNSUB_amsterdam.match(UTF_8_encoded)) + "\t\t\t\t\t--- RE for UNSUBSCRIBE on UTF-8")
print (str(re_UNSUB_amsterdam.match(rawdata)) + "\t\t\t\t\t--- RE for UNSUBSCRIBE on raw data")

re_amsterdam = re.compile(".*Adobe.*", re.UNICODE)
print (str(re_amsterdam.match(rawdata)) + "\t--- RE for 'Adobe' on raw data") # However, this work?!?
print (str(re_amsterdam.match(UTF_8_encoded)) + "\t--- RE for 'Adobe' on UTF-8")

'''
# In additon, I tried this regular expression library much to the same unsatisfactory result
new_re = ponyguruma.Regexp(".*UNSUBSCRIBE.*")
if new_re.match(UTF_8_encoded) != None:
   print("Ponyguruma RE matched! \t\t\t--- RE for UNSUBSCRIBE on UTF-8")
else:
   print("Ponyguruma RE did not match\t\t--- RE for UNSUBSCRIBE on UTF-8")

if new_re.match(rawdata) != None:
   print("Ponyguruma RE matched! \t\t\t--- RE for UNSUBSCRIBE on raw data")
else:
   print("Ponyguruma RE did not match\t\t--- RE for UNSUBSCRIBE on raw data")

new_re = ponyguruma.Regexp(".*Adobe.*")
if new_re.match(UTF_8_encoded) != None:
   print("Ponyguruma RE matched! \t\t\t--- RE for Adobe on UTF-8")
else:
   print("Ponyguruma RE did not match\t\t\t--- RE for Adobe on UTF-8")

new_re = ponyguruma.Regexp(".*Adobe.*")
if new_re.match(rawdata) != None:
   print("Ponyguruma RE matched! \t\t\t--- RE for Adobe on raw data")
else:
   print("Ponyguruma RE did not match\t\t\t--- RE for Adobe on raw data")
'''

我正在从事一个替换项目,在处理非ASCII编码的文件时遇到了困难。这个问题是一个更大项目的一部分-最终我想用其他文本替换文本(我在ASCII中得到了这个结果,但我还不能识别其他编码中出现的情况)。再次感谢。

http://brian-stinar.blogspot.com

-布莱恩·J·斯蒂纳-