Convert spreadsheet number to column letter

Question

I\'m looking for the opposite to this Q&A: Convert an excel or spreadsheet column letter to its number in Pythonic fashion.

or this one but in python How to conv

Answer 1

import gspread

def letter2num(col_letter: str) -> int:
    row_num, col_num = gspread.utils.a1_to_rowcol(col_letter + '1')
    return col_num


def num2letter(col_num: int) -> str:
    return gspread.utils.rowcol_to_a1(1, col_num)[:-1]


# letter2num('D') => returns 4
# num2letter(4) => returns 'D'