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  1. Python source code is automatically compiled into Python byte code by the CPython interpreter. Compiled code is usually stored in PYC (or PYO) files, and is regenerated when the source is updated, or when otherwise necessary.

  2. This byte code can be interpreted (official CPython), or JIT compiled (PyPy). Python source code (.py) can be compiled to different byte code also like IronPython (.Net) or Jython (JVM). There are multiple implementations of Python language. The official one is a byte code interpreted one.

  3. The compile() function returns the specified source as a code object, ready to be executed. Syntax compile( source , filename , mode , flag , dont_inherit , optimize )

  4. Learn importance, working and Types of Python Compilers - CPython, Jython, IronPython, ActivePython, PyJS, Nuitka, Stackless etc.

  5. What Does a Compiler Do? Why Is CPython Written in C and Not Python? The Python Language Specification. Memory Management in CPython. Conclusion. Part 2: The Python Interpreter Process. Establishing Runtime Configuration. Reading Files/Input. Lexing and Parsing. Abstract Syntax Trees. Conclusion. Part 3: The CPython Compiler and Execution Loop.

  6. It's important to know, that Python Source Code is compiled to Byte Code in a first step, just to understand the difference between Syntax Errors (which appear in the compilation step) and cxceptions, which appear at runtime.

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  8. Oct 22, 2012 · py_compile is a stdlib module that can produce byte-code given Python source. It is rarely needed. To compile Python 3 source code you must use py_compile version included with it and not the version from Python 2.7 if you use it from a command-line: $ python3 -m py_compile your_script.py

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