SimpleBinaryToDecimal_Looped.py

# For example ONLY

binary = 0
decimal = 0
isBinary = True

while True:
    binary = input('Enter a number: ')
    if binary:
        for digit in binary:
            if not digit.isnumeric():
                print('error: not-numeric')
                isBinary = False
                break
            elif (int(digit) < 0) or (int(digit) > 1):
                print('error: some digits < 0 or > 1')
                isBinary = False
                break
        if not isBinary:
            continue
    else:
        print('error, no input')
        continue
    break


for digit in binary:
    print("Processing \"" + digit + "\"...")
    decimal = decimal*2 + int(digit)
print("Binary:  " + binary)
print("Decimal: " + str(decimal))