Formatting floats

Question

can someone explain this
https://code.sololearn.com/cbBEBr35yIX7/?ref=app

Answer 1

Not sure what you’re specifically asking to be explained, but the 0:b changes the number into binary form where each digit is a power of 0, and the 0:e changes it to scientific notation, where 1e5 would represent 1 *(10^5)