<p>我使用的是python2.4,在使用unicode正则表达式时遇到了一些问题。我试着把我的问题归纳成一个非常清楚和简明的例子。Python如何识别不同的字符编码似乎有一些问题,或者我的理解有问题。非常感谢您的关注!在</p>
<pre><code>#!/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")
'''
</code></pre>
<p>我正在做一个替代项目,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中得到了这个工作,但是我还不能确定在其他编码中出现的情况。)再次感谢。在</p>
<p><a href="http://brian-stinar.blogspot.com" rel="nofollow noreferrer">http://brian-stinar.blogspot.com</a></p>
<p>-布莱恩·J·斯蒂纳-</p>