Python program to convert number from decimal fraction to binary

DecimalToBinary.py

def decToBin(number, base, precision):
	number = str(number)
	integerPart = int( number[ : number.index(".") ] )
	fractionalPart = float( number[ number.index(".") : ] )
	
	output = ""
	
	while integerPart != 0:
		output = str( integerPart % base ) + output
		integerPart //= base
	
	if fractionalPart == 0:
		return output
	
	output += "."
	
	while fractionalPart != 0 and precision != 0 :
		fractionalPart *= base
		fractionalPartString = str(fractionalPart)
		output += fractionalPartString[ : fractionalPartString.index(".") ]
		fractionalPart = float( fractionalPartString[ fractionalPartString.index(".") : ] )
		precision -= 1
	
	return output

number = float( input("Enter the number \n") )

print( decToBin(number, 2, 10) )