What are “.py” and “.pyc” file types?

 In the context of Python programming language, the particular file types of “.py and .pyc are key components in the process of building a Python-based project. In the Python programming language,  the “.py” files include the source code that humans can read that programmer write during the building process. When this particular file of “.py” is implemented the Python compiles it into the bytecode of “.pyc” files. Therefore, these files are created to speed up the process of Python code in subsequent runs.

If a “.pyc” file exists already and it is newer than “.py” files, the python would utilize the “.pyc” file directly as it would assume that source code has not been changed since the “.py” is already available in the system. In this scenario the python would recompile the source code and then after it will recreate the “.pyc” files. Here is the example given to illustrate this relationship: