How to calculate up 1s and 0s of a binary?

Question

I am using bin() function to convert decimal to binary but i need to sum up 1s and 0 in binary

Answer 1

very similar to Ipangs suggestion, but i want to present it anyway:

- use bin() function to convert integer to binary string
- **as binary sign "0b" is preceeded to the resulting string, use a slice to do the following steps (<binary_string>[2:)]
- use string method count() to get the number of "1" (<binary_string>[2:].count("1")
- use string method count() to get the number of "0" (<binary_string>[2:].count("0")

Answer 2

- Crop binary number sign '0b'
- Use len() to get total bits
- Use <binary_string>.count() to count '1'
- Subtract total bits by number of '1' bits to count '0'.

https://code.sololearn.com/c60biWemCjB7/?ref=app

Answer 3

This is a good exercise.
Please link here your attempt first then anybody can help.