How to check for ANSI character in Python

Question

I'm trying to validate a set of strings to report out the usage of illegal ANSI characters. I've read that extended ASCII is NOT exactly similar to ANSI. I've been trying to search for a way to check if a character is an ANSI character, but so far I found none. Does anyone know how to do this in Python?

https://stackoverflow.com/questions/701882/what-is-ansi-format suggests "ansi" is not enough to specify an encoding. Which specific ANSI encoding do you wish to validate? — Paul Hankin, Jul 28 '21 at 07:58
The other question is what exactly you mean by illegal characters. — Paul Hankin, Jul 28 '21 at 08:01

score 2 · Accepted Answer · answered Jul 28 '21 at 07:55

2

Try with ord(c) function:

def detect_non_printable(s):
    for c in s: 
        n = ord(c)
        if n < 32 or n > 126: 
           return "NON-PRINTABLE DETECTED" 
    return "PRINTABLE CHARS ONLY"

answered Jul 28 '21 at 07:55

rnso

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score 1 · Answer 2 · answered Jul 28 '21 at 07:48

This might help you with detecting any ANSI character in a text :

split_ANSI_escape_sequences = re.compile(r"""
    (?P<col>(\x1b     # literal ESC
    \[       # literal [
    [;\d]*   # zero or more digits or semicolons
    [A-Za-z] # a letter
    )*)
    (?P<name>.*)
    """, re.VERBOSE).match

def split_ANSI(s):
    return split_ANSI_escape_sequences(s).groupdict()

Found this code on this question.

How to check for ANSI character in Python

2 Answers2