Python has a set of tools that make up the standard library. It usually includes thousands of functions that are impossible to remember.
So, programmers need to know where to find the documentation for these functions and must know what kind of result they want to get. That is why programming without the Internet is not easy.
Beginners often don't understand how and where to learn the functions they need to use. That said, there's no way to solve this problem. As they work more and more, developers become more experienced, adding to their wealth of knowledge and practice. They become gradually familiar with more features that solve their problems differently.
Here are tips to help increase professionalism:
Always keep track of what type of data you're working with. This way, you'll find the function you need in the relevant section of the documentation. For example, to work with strings, you need to learn string functions
Now and then, open the section with the standard functions from your work area, and learn the signatures and how to use them
Read other people's code on GitHub more often and pay special attention to the code in the libraries you use
If you follow these tips and pay close attention to detail, you'll soon see yourself develop and grow professionally.