UnicodeWarning:Tkinter中的特殊字符

Question

我在Tkinter(Python 2.7)编写了一个程序,这是一个挪威语的æøåscrabblehelper,它包含一些特殊的字符(),这意味着我的wordlist(ordliste)包含带有特殊字符的单词.

当我运行我的函数finnord(c*)时,它返回'cd'.我正在使用一个entry.get()字来输入我的功能.

我的问题是entry.get()的编码.我有本地编码UTF-8,但是UniCodeError当我在输入框中编写任何特殊字符并将它们与我的wordliste匹配时,我得到了一个.

这是我的输出.

Warning (from warnings module):
  File "C:\pythonprog\scrabble\feud.py", line 46
if s not in liste and s in ordliste:
UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode -    
interpreting them as being unequal

当我写在我的shell中时:

> ordinn.get()
u'k\xf8**e'
> ordinn.get().encode('utf-8')
'k\xc3\xb8**e'
> print ordinn.get()
kø**e
> print ordinn.get().encode('utf-8')
kø**e

任何人都知道为什么我不能将ordinn.get()(条目)与我的单词列表相匹配？

Answer 1

我可以这样重现错误:

% python
Python 2.7.2+ (default, Oct  4 2011, 20:03:08) 
[GCC 4.6.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> 'k\xf8**e' in [u'k\xf8**e']
__main__:1: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal
False

所以也许s是a str object,liste或者ordliste包含unicode,或者(如eryksun在评论中指出的那样)反之亦然.解决方案是解码str objects(最有可能使用utf-8编解码器)来制作它们unicode.

如果这没有帮助,请打印并发布输出

print(repr(s))
print(repr(liste))
print(repr(ordliste))

我相信通过将所有字符串转换为可以避免该问题unicode.

1. 生成ordliste时norsk.txt,使用 codecs.open('norsk.txt','r','utf-8'):

   encoding = sys.stdin.encoding
   with codecs.open('norsk.txt','r','utf-8') as fil:
       ordliste = [line.rstrip(u'\n') for line in fil]
   

2. 尽快将所有用户输入转换为unicode:

   def get_unicode(widget):
       streng = widget.get()
       try:
           streng = streng.decode('utf-8')
       except UnicodeEncodeError:
           pass
       return streng
   

所以也许试试这个:

import Tkinter as tk
import tkMessageBox
import codecs
import itertools
import sys

alfabetet = (u"abcdefghijklmnopqrstuvwxyz"
             u"\N{LATIN SMALL LETTER AE}"
             u"\N{LATIN SMALL LETTER O WITH STROKE}"
             u"\N{LATIN SMALL LETTER A WITH RING ABOVE}")

encoding = sys.stdin.encoding
with codecs.open('norsk.txt','r',encoding) as fil:
    ordliste = set(line.rstrip(u'\n') for line in fil)

def get_unicode(widget):
    streng = widget.get()
    if isinstance(streng,str):
        streng = streng.decode('latin-1')
    return streng

def siord():
    alfa=lagtabell()
    try:
        streng = get_unicode(ordinn)
        ordene=finnord(streng,alfa)
        if len(ordene) == 0:
            # There are no words that match
            tkMessageBox.showinfo('Dessverre..','Det er ingen ord som passer...')
        else:
            # Done: The words that fit the pattern
            tkMessageBox.showinfo('Ferdig',
                'Ordene som passer er:\n'+ordene.encode('utf-8'))
    except Exception as err:
        # There has been a mistake .. Check your word
        print(repr(err))
        tkMessageBox.showerror('ERROR','Det har skjedd en feil.. Sjekk ordet ditt.')

def finnord(streng,alfa): 
    liste = set()
    for substitution in itertools.permutations(alfa,streng.count(u'*')):
        s = streng
        for ch in substitution:
            s = s.replace(u'*',ch,1)
        if s in ordliste:
            liste.add(s)
    liste = [streng]+list(liste)
    return u','.join(liste)+u'.'

def lagtabell():
    tinbox = get_unicode(bokstinn)
    if not tinbox.isalpha():
        alfa = alfabetet
    else:
        alfa = tinbox.lower()
    return alfa

root = tk.Tk()
root.title('FeudHjelper av Martin Skow Røed')
root.geometry('400x250+450+200')
# root.iconbitmap('data/ikon.ico')

skrift1 = tk.Label(root,
                text = '''\
Velkommen til FeudHjelper. Skriv inn de bokstavene du har, og erstatt ukjente med *.
F. eks: sl**ge
Det er kun lov til å bruke tre stjerner, altså tre ukjente bokstaver.''',
                font = ('Verdana',8), wraplength=350)
skrift1.pack(pady = 5)

ordinn = tk.StringVar(None)
tekstboks = tk.Entry(root, textvariable = ordinn)
tekstboks.pack(pady = 5)

# What letters do you have? Eg "ahneki". Leave blank here if you want all the words.
skrift2 = tk.Label(root, text = '''Hvilke bokstaver har du? F. eks "ahneki". La det være blankt her hvis du vil ha alle ordene.''',
                font = ('Verdana',8), wraplength=350)
skrift2.pack(pady = 10)

bokstinn = tk.StringVar(None)
tekstboks2 = tk.Entry(root, textvariable = bokstinn)
tekstboks2.pack()

knapp = tk.Button(text = 'Finn ord!', command = siord)
knapp.pack(pady = 10)
root.mainloop()