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.. currentmodule:: prody

Cross-platform Issues

This section describes cross-platform issues that may emerge and provides possible solutions for them.

Numpy integer type

Issues may arise when comparing Numpy integer types with Python :func:`int`. Python :func:`int` equivalent Numpy integer type on Windows (Win7 64bit, Python 32bit) is :class:`~numpy.int32`, while on Linux (Ubuntu 64bit) it is :class:`~numpy.int64`. For example, the statement isinstance(np.array([1], np.int64), int) may return True resulting in unexpected behavior in ProDy functions or methods. If Numpy integer type needs to be specified, using :class:`~numpy.int` seems a safe option.

Relative paths

:func:`os.path.relpath` function raises exceptions when the working directory and the path of interest are on separate drives, e.g. trying to write a :file:`C:\\temp` while running tests on :file:`D:\\ProDy`. Instead of this :func:`os.path.relpath`, ProDy function :func:`.relpath` should be used to avoid problems.