/usr/share/doc/python-pyqtgraph-doc/html/_sources/widgets/pathbutton.txt is in python-pyqtgraph-doc 0.9.8-3.
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1 2 3 4 5 6 7 | PathButton
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.. autoclass:: pyqtgraph.PathButton
:members:
.. automethod:: pyqtgraph.PathButton.__init__
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