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Some programs run, some do not



  • Using Python 2.73, PyQt4 0n windows 7. PATH F:\Python27.

    The sample graphs, downloaded from http://pyqwt.sourceforge.net/gui-examples.html,
    work every time, from any directory.

    The examples installed with the PyQt4 package also work every time.

    My problem is that any other program which uses Qwt5; some from a Python book,
    and some from internet sites, do not work at all.
    The Windows command screen opens, and immediately closes.
    No error messages.

    I have tried everything I can think of, and getting nowhere.
    It does not seem logical.

    Any ideas?
    TIA
    Don Oliver


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