# here is a comment this is a documentation
# I use the binary input to create a space where you can enter a binary number
def main():
    binaryInput = input("Enter a binary number ==> ")
    exponentValue = len(binaryInput)
    totalValue = 0
    
    if exponentValue < 1:
        del binaryInput
        del exponentValue
        del totalValue
        print("All you did was press enter, I need a value")
        main()
     # the print statemet tells us that wer can only enter o or 1 because we have to convert it to a binary number
    # the Print statement is use to show what happenes to what ever that you show
    for conversion in range(exponentValue):
        if binaryInput[conversion] == "0":
            actualValue = 0
        elif binaryInput[conversion] == "1":
            actualValue = 2
        else:
            print("0 or 1 please")
            del binaryinput
            del exponentvalue
            del totalValue
            main()
           # THis shows what the vale of the number the user enters 
        trueValue = actualValue ** (exponentValue -1)
              
        if actualValue == 0 and exponentValue == 1:
            trueValue = 0
              
        exponentValue -= 1
              
        totalValue += trueValue
    print("The decimal Value of {} is {} ". format(binaryInput, totalValue))
              

              
              
main()

Enter a binary number ==> 1011
The decimal Value of 1011 is 11