We just need to iterate the binary string and get the product and then finally the sum of all the products. In python, we can get the multipliers(increasing powers of two) using the left shift operator. Refer the below diagram for better understanding: Convert binary to decimal form Product = 0 x 2^2.Īt last, the summation of all the products gives us the decimal form of the binary representation. The third bit from the right, 0 gets multiplied to 2^2. The second bit from the right, 1, gets multiplied to 2^1.

The rightmost bit, 1, gets multiplied to 2^0.

Now that we have multipliers, we then multiply them with the respective digits they are assigned to. Starting from right towards the left(the lowest bit to the highest) we multiply the digits in binary representation with a power of two.įor the rightmost bit, the multiplier is 2^0įor the second position from the right, the multiplier is 2^1.įor the third position from the right, the multiplier is 2^2. Now, there is a multiple for each digit in binary representation. Int(x = b_string, base = 2) # Convert to base 2.Īpproach 2: Using bitmasking and left shift operatorīefore moving forward, it is necessary to understand how we convert the binary number to its decimal form. # Now, convert back the binary string to integer with int() and base parameter. Print(b_string) # Print the binary string representation.

Returns: Integer form of the binary string representation.Įxample using int() b_string = bin(89) # For testing purpose, get the binary string representation of 89.

Parameters: x = binary string(can be hexadecimal, octal), base = the base of the string literal.Syntax: int(x = binary_string,base = 2).However, we can also convert the string literal of the different base to the integer with the help of kwarg base. You must have seen int() when you wanted to typecast float or string to the integer format. Approach 1: Using method int() + base argument

Python binary to int