Functions Practice (Base Conversions)

from time import sleep

#converts denary to binary/octal/hex
def BaseConversion(n):
    binary = bin(n)[2:]
    octal = oct(n)[2:]
    hexadecimal = hex(n)[2:]
    print("Binary:",binary)
    print("Oct:",octal)
    print("Hex:",hexadecimal)
    return binary, octal, hexadecimal

#converts binary numbers to denary
def BinToDec(n):
    list_dec=[]
    for i in range(0,len(n)):
        list_dec.append(int(n[::-1][i])*2**i)
    return(sum(list_dec))

#converts strings to ASCII
def TexttoAscii(n):
    binstr=""
    for char in n:
        pad = ""
        byte=str(bin(ord(char))[2:])
        while len(byte) < 8:
            byte = "0" + byte
        binstr += byte+" "
    return binstr

#converts ASCII binary to text strings
def AsciitoText(n):
    count = 0
    word = ""
    conv = ""
    for num in n:
        if (num == "1") or (num == "0"):
            count +=1
            word += num
            if count == 8:
                conv += chr(BinToDec(word))
                count = 0
                word = ""
        elif num == " ":
            continue
        else:
            print("Error: This is not a valid binary number")
    return conv

#create a text file and write to it
def TextFileCreation():
    return null

def Menu():
    print("Built in functions demo")
    print("""
    1. Denary to base 2, 8, 16
    2. Binary to denary
    3. Text to ASCII binary
    4. ASCII binary to text
    5. WIP TextFileCreation
    """)

    try:
        choice = int(input("Type the number of the function you require:\n"))
        if choice == 1:
            BaseConversion(int(input("Enter a denary number to convert:\n")))
            sleep(1)
        elif choice == 2:
            print(BinToDec(input("Enter a binary number:\n")))
            sleep(1)
        elif choice == 3:
            print(TexttoAscii(input("Enter a text string\n")))
            sleep(1)
        elif choice == 4:
            print(AsciitoText(input("Enter a binary string\n")))
            sleep(1)
        elif choice == 5:
            print("Not completed yet")
            sleep(1)
        else:
            print("Error, try again")
    except ValueError:
        print("Woops, you need to enter a number from the menu")
    Menu()
Menu()