tkinter.TclError: 字符 U+1f449 超出 Tcl 允许的范围 (U+0000-U+FFFF)

Question

我正在尝试使用 tweepy 在 Tkinter 窗口上显示我的 twitter 时间线。这是代码

import tweepy
import tkinter

consumer_key = 'xxxxxxxxxxxxxx'
consumer_sec ='xxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
acc_token = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
acc_token_sec = 'xxxxxxxxxxxxxxxxxxxxxx'
auth = tweepy.OAuthHandler(consumer_key,consumer_sec)
auth.set_access_token(acc_token,acc_token_sec)

api = tweepy.API(auth)

tweets = api.home_timeline()

tkwindow = tkinter.Tk()

for tweet in tweets:
    i = 1
    label = tkinter.Label(tkwindow, text=tweet.author.name + " " + str(tweet.created_at) + "\n" + str(tweet.text))
    if i == 5:
        break
tkwindow.mainloop()

但我有以下错误

_tkinter.TclError: 字符 U+1f449 超出 Tcl 允许的范围 (U+0000-U+FFFF)

我知道 tkinter 无法显示一些出现在真实推文中的特殊图标，但实际上，我不想显示这些，我只想显示推文的简单文本，

那么我怎样才能避免这个错误并只显示推文的文本

Answer 1

最简单的方法是去掉多余的字符。这可以在 for 循环的开头使用以下代码来完成：

char_list = [tweet[j] for j in range(len(tweet)) if ord(tweet[j]) in range(65536)]
tweet=''
for j in char_list:
    tweet=tweet+j

Answer 2

python 错误报告中描述了该问题：

• Python Bug Tracker Issue # 21084

我将那里发布的解决方案改编为处理 gmail 邮件，其中主题行有时会插入不正确的字符：

try:            
    iid = self.lib_tree.insert("", tk.END, tags="unchecked", 
        values=(message_id, subject, sender, epoch, date, labels,
                snippet))
except tk.TclError:
    print('old subject:', subject)
    
    import re

    # From: https://bugs.python.org/issue21084
    astral = re.compile(r'([^\x00-\uffff])')
    s = subject
    new_subject = ""
    for i, ss in enumerate(re.split(astral, s)):
        if not i%2:
            new_subject += ss
        else:
            new_subject += '?'
    print('new_subject:', new_subject)
    continue

加载大约 5,000 条 gmail 消息的程序输出：

$ bserve.py
old subject: Mserve June 18/2021
new_subject: Mser?e June 18/2021
old subject: mserve December 7, 2020
new_subject: mser?e December 7, 2020
old subject: Re: WinEunuuchs2Unix
new_subject: Re: WinEunuuchs2Uni?
old subject: ? ORDER UPDATE: 2019 Cigarette Light...
new_subject: ? ORDER UPDATE: 2019 Cigarette Light...
old subject: ? You've got 18 new ideas waiting for you!
new_subject: ? You'?e got 18 ne? ideas ?aiting for ?ou!
old subject: ? Get inspired with these 18 trending ideas
new_subject: ? Get inspired ?ith these 18 trending ideas
old subject: ? 18 popular Pins for you
new_subject: ? 18 popular Pins for ?ou
old subject: ? Get inspired with these 18 trending ideas
new_subject: ? Get inspired ?ith these 18 trending ideas
old subject: ? Get inspired with these 18 trending ideas
new_subject: ? Get inspired ?ith these 18 trending ideas
old subject: ? You've got 18 new ideas waiting for you!
new_subject: ? You'?e got 18 ne? ideas ?aiting for ?ou!
old subject: ? We picked some Puzzle art Pins for you
new_subject: ? We picked some Pu??le art Pins for ?ou
old subject: ? INFANTRY Mens LCD Digital Quartz Wrist Watch Tactical Sport Stainless Steel Navy is HOT on eBay, but quantity is limited
new_subject: ? INFANTRY Mens LCD Digital Quart? Wrist Watch Tactical Sport Stainless Steel Na?? is HOT on eBa?, but quantit? is limited
old subject: ? POLJOT AVIATOR ATTACK PLANE MEN`S  RUSSIAN MILITARY WATCH is HOT on eBay, but quantity is limited
new_subject: ? POLJOT AVIATOR ATTACK PLANE MEN`S  RUSSIAN MILITARY WATCH is HOT on eBa?, but quantit? is limited

有些是显而易见的原因，例如“?”。有些不太明显，例如“Mserve”有无效的“v”并变成“Mser?e”。

我想当我在旅行结束时回到家时用 Android 写 mserve 项目电子邮件时出现了故障。