get-excel-column-name.py

def get_col_name(col):
    abc = " ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    col_name = ""
    while col > 0:
        letter_index = col % 26
        if letter_index == 0:
            letter_index = 26
            col -= 26
        col //= 26
        col_name = abc[letter_index] + col_name
        
    return col_name.strip()
    
# uncomment lines below to output the result (delete "#" character)
# print(get_col_name(27))  # "AA"
# print(get_col_name(53))  # "BA"
# print(get_col_name(3702))  # "ELJ"