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Thread: Python byte code

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  1. #1
    Senior Member IcSilk's Avatar
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    Python byte code

    So I was doing some lite reading before bed last night and a confusion arose:

    Internally, and almost completely hidden from you, when you execute a program, Python first compiles your source code into a format known as byte code. Compilation is simply a translation step, and byte code is a lower-level, platform independent representation of your source code ....
    By saying the byte code is 'platform-independent' is this saying that the code can now be run interpreter-free??

    Put another way: Is the interpreter's function to translate from source code to byte code (this is all about Python language, of course) and then its done until the next new batch of code is run, its all up to the PVM after that?
    "In most gardens they make the beds too soft - so that the flowers are always asleep" - Tiger Lily

  2. #2
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    yes.
    Every now and then, one of you won't annoy me.

  3. #3
    Senior Member IcSilk's Avatar
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    So just to confirm .. a .py file needs the interpreter and the .pyc file does not need the interpreter but is run through the PVM. The PVM is part of the python IDLE? or is integrated within the OS? or both?

    I think the answer is both, that it is installed within the OS along with the Python IDLE package. Yes?
    "In most gardens they make the beds too soft - so that the flowers are always asleep" - Tiger Lily

  4. #4
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    ^

    Again, I would say, "yes.". The Virtual Machine is going to be Python version specific, likewise Python package organization is going to be OS dependent.
    Every now and then, one of you won't annoy me.

  5. #5
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    the following command can be used to get the disassembly of myfunc():
    dis.dis(myfunc)
    2 0 LOAD_GLOBAL 0 (len)
    3 LOAD_FAST 0 (alist)
    6 CALL_FUNCTION 1
    9 RETURN_VALUE

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