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Thread: Write to datbase in a spawn python call

  1. #1

    Write to datbase in a spawn python call

    Hi,

    I am using spawn to execute many python background processes. How do I include the Lianja modules in the python script so that it can write back to the tables?

    Thanks

    Herb

    ps - my environment variable is set to c:\lianja\scriptinglanguages\ptyhon. So it is using the Lianja install of Python.

  2. #2
    Lianja Development Team barrymavin's Avatar
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    Hi Herb,

    You can run.

    lianjaruntime filename.ext

    where ext can be .dbo, .py, .php or .js.

    So you should spawn the runtime which has python embedded.
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  3. #3
    Hi Barry,

    This works for me when spawning just the python call.
    python.exe c:\lianja\apps\matchbackmain\generate_file.py D:\\buffys2ep20\\test36\\jpg\
    But I am not sure how to call the runtime properly to get it to work. I am calling it like this
    lianjaruntime.exe c:\lianja\apps\matchbackmain\generate_file.py D:\\buffys2ep20\\test36\\jpg\
    I have also tried like this.
    lianjaruntime.exe --kiosk c:\lianja\apps\matchbackmain\generate_file.py --args D:\\buffys2ep20\\test36\\jpg\
    I think I am missing something.

    Thanks

    Herb

  4. #4
    Lianja Development Team barrymavin's Avatar
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    Hi Herb

    https://www.lianja.com/doc/index.php..._Line_Switches

    You may need to use

    lianjaruntime —file filename.ext
    Principal developer of Lianja, Recital and other products

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  5. #5
    Lianja Development Team barrymavin's Avatar
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    Hi Herb,

    When you spawn the python interpreter how are you referencing the args?
    Principal developer of Lianja, Recital and other products

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  6. #6
    Lianja Development Team barrymavin's Avatar
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    In Lianja 4.1.2 this now all works as expected.

    lianja --file c:\lianja\apps\matchbackmain\generate_file.py --args "'D:\\buffys2ep20\\test36\\jpg\'"
    or
    lianjaruntime --file c:\lianja\apps\matchbackmain\generate_file.py --args "'D:\\buffys2ep20\\test36\\jpg\'"

    Here is an example:

    lianja --file barry.py --args "'hello\sthere',1234,'bye'"

    and the file barry.py:

    Code:
    if __name__ == "__main__":
        print sys.argv
    The output is:

    ['barry.py', 'hello there', 1234, 'bye']

    Note that spaces in the --args list need to be escaped as \s or  
    Principal developer of Lianja, Recital and other products

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  7. #7
    Thanks Barry!

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