How to remove non printable characters from a string in Python, taken from: https://www.tutorialspoint.com/How-to-trim-down-non-printable-characters-from-a-string-in-Python

remove_non_printables.py

import sys, unicodedata, re
# Get all unicode characters
all_chars = (unichr(i) for i in xrange(sys.maxunicode))
# Get all non printable characters
control_chars = ''.join(c for c in all_chars if unicodedata.category(c) == 'Cc')
# Create regex of above characters
control_char_re = re.compile('[%s]' % re.escape(control_chars))
# Substitute these characters by empty string in the original string.
def remove_control_chars(s):
    return control_char_re.sub('', s)
print (remove_control_chars('\x00\x01String'))

Here is similar code and commented that this seems risky since valid char can be removed.

https://stackoverflow.com/questions/92438/stripping-non-printable-characters-from-a-string-in-python