print (int('0011',2)

Question

output of this code is 3. i don't know this code works can someone explain me ?
https://code.sololearn.com/c3vJogJbW0hX/?ref=app

Answer 1

2^0 + 2^1 = 1 + 2. int result = 3

Answer 2

https://stackoverflow.com/questions/23190060/what-does-base-value-do-in-int-function#:~:text=The%20base%20value%20tells%20python,in%20base%203%20is%2031.

Answer 3

Conversion of number system respective to base, it is?