在Python 3中删除BMP（表情符号）之外的字符

Question

I have an error: UnicodeEncodeError: 'UCS-2' codec can't encode characters in position 266-266: Non-BMP character not supported in Tk

I'm parsing the data, and some emoji's falls to array. data = 'this variable contains some emoji'sツ😂' I want: data = 'this variable contains some emoji's'

How I can remove these characters from my data or handle this situation in Python 3?

Answer 1

If the goal is just to remove all characters above '\￿' , the straightforward approach is to do just that:

data = "this variable contains some emoji'sツ😂"
data = ''.join(c for c in data if c <= '\uFFFF')

It's possible your string is in decomposed form, so you may need to normalize it to composed form first so the non-BMP characters are identifiable:

import unicodedata

data = ''.join(c for c in unicodedata.normalize('NFC', data) if c <= '\uFFFF')

Answer 2

>>> import string
>>> printable = set(string.printable)
>>> filter(lambda x: x in printable, data)
"this variable contains some emoji's"

For BMP read this: removing emojis from a string in Python