Weekly Challenge - Hidden Calculator Words

hidden_calculator_words.py

"""
At school, we used to play with our calculators and send each other secret messages.
The trick was to enter a special number and turn the calculator upside-down.

Like saying hello, you’d type in the calculator 07734 and turn it upside down.
Given a number, create a function that converts it into a word by turning the integer 180 degrees around.
"""

number_letter_list = [
    "I", "Z", "E", "H", "S", "G", "L", "B", "-", "O"
]

def turn_calc(number: str): # String type on number because we have zero
    number = number.replace(".", "") # ignore dots
    number_list = list(reversed(number)) # turn 180 degrees around
    word_map = map(lambda n: number_letter_list[int(n) - 1], number_list) # list starts at 0, so (7-1) = L
    print("".join(word_map))

if __name__ == '__main__':
    turn_calc("707") # LOL
    turn_calc("5508") # BOSS
    turn_calc("3045") # SHOE
    turn_calc("07734") # HELLO
    turn_calc("0.7734") # HELLO