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• There is a .pyc file when Python codes is ran.
• The .pyc file is a compiled Python that runs in Python virtual machine.
• This makes Python is not fully interpreted language.

• I think this is the flexibility of Python.
• It can run with just a codes using an interpreter or compiled into binary.

• In fact all programming language has the compiled and the interpreted aspect.
• Here is the link to the StackOverflow discussion, http://stackoverflow.com/questions/2998215/if-python-is-interpreted-what-are-pyc-files.