Where does string.punctuation come from?

[snippsat]

string is part of the The Python Standard Library.
string — Common string operations look at link to code Lib/string.py

Make my own and add 999,you see that's it really simple this is all code that load that line.

# my_punctuation.py
punctuation = r"""!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~999"""

Use:

E:\div_code
λ ptpython
>>> import my_punctuation

>>> my_punctuation.punctuation
'!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~999'