• Byte code of Python is generated after compiling a python program.
• Python Byte code goes through two stages.
  • It compiles the code into .pyc files that is actually a bytecode. This .pyc file (bytecode) is interpreted by using CPython interpreter.
  • Its use for fast execution.

Python is a dynamic language, and running it from the command line basically triggers the given steps

• • The source is compiled first time it is encountered e.g., imported as a module or directly executed. This step generates a binary file, with a .pyc or .pyo extension depending on the system.
  • The interpreter reads the binary file and executes the opcodes one at a time.
  • The python interpreter is stack-based and once source is compiled corresponding .pyc is ready in the matching directory (in case of python 2.x). With python 3.x a new __pycache__ directory is produced for the source and all compiled Bytecode files are located underneath.

• Save the file as ‘MyProgram.py’. This ‘MyProgram.py’ is source code. Now if you compile this file you would get a file with ‘.pyc’ extention which is known as byte code.