52 lines
1.7 KiB
Python
52 lines
1.7 KiB
Python
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"""Module to give helpful messages to the user that did not
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compile scikit-learn properly.
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"""
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import os
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INPLACE_MSG = """
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It appears that you are importing a local scikit-learn source tree. For
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this, you need to have an inplace install. Maybe you are in the source
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directory and you need to try from another location."""
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STANDARD_MSG = """
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If you have used an installer, please check that it is suited for your
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Python version, your operating system and your platform."""
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def raise_build_error(e):
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# Raise a comprehensible error and list the contents of the
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# directory to help debugging on the mailing list.
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local_dir = os.path.split(__file__)[0]
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msg = STANDARD_MSG
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if local_dir == "sklearn/__check_build":
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# Picking up the local install: this will work only if the
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# install is an 'inplace build'
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msg = INPLACE_MSG
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dir_content = list()
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for i, filename in enumerate(os.listdir(local_dir)):
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if (i + 1) % 3:
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dir_content.append(filename.ljust(26))
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else:
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dir_content.append(filename + "\n")
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raise ImportError(
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"""%s
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___________________________________________________________________________
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Contents of %s:
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%s
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___________________________________________________________________________
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It seems that scikit-learn has not been built correctly.
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If you have installed scikit-learn from source, please do not forget
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to build the package before using it: run `python setup.py install` or
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`make` in the source directory.
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%s"""
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% (e, local_dir, "".join(dir_content).strip(), msg)
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)
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try:
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from ._check_build import check_build # noqa
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except ImportError as e:
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raise_build_error(e)
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