40 lines
1.8 KiB
Python
40 lines
1.8 KiB
Python
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# Copyright (c) Microsoft Corporation. All rights reserved.
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# Licensed under the MIT License. See LICENSE in the project root
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# for license information.
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import sys
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if __name__ == "__main__":
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# debugpy can also be invoked directly rather than via -m. In this case, the first
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# entry on sys.path is the one added automatically by Python for the directory
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# containing this file. This means that import debugpy will not work, since we need
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# the parent directory of debugpy/ to be in sys.path, rather than debugpy/ itself.
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#
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# The other issue is that many other absolute imports will break, because they
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# will be resolved relative to debugpy/ - e.g. `import debugger` will then try
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# to import debugpy/debugger.py.
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#
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# To fix both, we need to replace the automatically added entry such that it points
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# at parent directory of debugpy/ instead of debugpy/ itself, import debugpy with that
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# in sys.path, and then remove the first entry entry altogether, so that it doesn't
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# affect any further imports we might do. For example, suppose the user did:
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#
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# python /foo/bar/debugpy ...
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#
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# At the beginning of this script, sys.path will contain "/foo/bar/debugpy" as the
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# first entry. What we want is to replace it with "/foo/bar', then import debugpy
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# with that in effect, and then remove the replaced entry before any more
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# code runs. The imported debugpy module will remain in sys.modules, and thus all
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# future imports of it or its submodules will resolve accordingly.
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if "debugpy" not in sys.modules:
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# Do not use dirname() to walk up - this can be a relative path, e.g. ".".
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sys.path[0] = sys.path[0] + "/../"
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import debugpy # noqa
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del sys.path[0]
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from debugpy.server import cli
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cli.main()
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