Python formatting large values

Question

Below is the code for formatting an x value that I have been using.

Examples of what does it do:

• It formats 7,500,000 into 7.5 M

• It form

Answer 1

Try all the different possible ways to format it and pick the shortest one length-wise, with preference given to larger units (e.g., prefer .55 B to 550 M, since they are the same length).

As for stripping leading zeros, one possible solution is checking if s[:2] == '0.' and replacing it with '.'