As python has many inbuilt function.. It is difficult to remember it... How to keep trace of it...????

Answer 1

Practice is always the answer. It helps you remember them and eventually get used to them.

In the meantime, here's a list of Python's built-in functions:
https://docs.python.org/3/library/functions.html

Answer 2

Remember only few important ones, Google rest when needed

Answer 3

new editors like vs code can help