Uploaded Test files
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venv/Lib/site-packages/qtpy/compat.py
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venv/Lib/site-packages/qtpy/compat.py
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# -*- coding: utf-8 -*-
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#
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# Copyright © 2009- The Spyder Development Team
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# Licensed under the terms of the MIT License
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"""
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Compatibility functions
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"""
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from __future__ import print_function
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import sys
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import collections
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from . import PYQT4
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from .QtWidgets import QFileDialog
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from .py3compat import is_text_string, to_text_string, TEXT_TYPES
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# =============================================================================
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# QVariant conversion utilities
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# =============================================================================
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PYQT_API_1 = False
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if PYQT4:
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import sip
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try:
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PYQT_API_1 = sip.getapi('QVariant') == 1 # PyQt API #1
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except AttributeError:
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# PyQt <v4.6
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PYQT_API_1 = True
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def to_qvariant(pyobj=None):
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"""Convert Python object to QVariant
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This is a transitional function from PyQt API #1 (QVariant exist)
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to PyQt API #2 and Pyside (QVariant does not exist)"""
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if PYQT_API_1:
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# PyQt API #1
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from PyQt4.QtCore import QVariant
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return QVariant(pyobj)
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else:
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# PyQt API #2
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return pyobj
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def from_qvariant(qobj=None, convfunc=None):
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"""Convert QVariant object to Python object
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This is a transitional function from PyQt API #1 (QVariant exist)
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to PyQt API #2 and Pyside (QVariant does not exist)"""
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if PYQT_API_1:
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# PyQt API #1
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assert isinstance(convfunc, collections.Callable)
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if convfunc in TEXT_TYPES or convfunc is to_text_string:
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return convfunc(qobj.toString())
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elif convfunc is bool:
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return qobj.toBool()
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elif convfunc is int:
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return qobj.toInt()[0]
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elif convfunc is float:
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return qobj.toDouble()[0]
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else:
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return convfunc(qobj)
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else:
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# PyQt API #2
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return qobj
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else:
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def to_qvariant(obj=None): # analysis:ignore
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"""Convert Python object to QVariant
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This is a transitional function from PyQt API#1 (QVariant exist)
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to PyQt API#2 and Pyside (QVariant does not exist)"""
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return obj
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def from_qvariant(qobj=None, pytype=None): # analysis:ignore
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"""Convert QVariant object to Python object
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This is a transitional function from PyQt API #1 (QVariant exist)
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to PyQt API #2 and Pyside (QVariant does not exist)"""
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return qobj
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# =============================================================================
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# Wrappers around QFileDialog static methods
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# =============================================================================
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def getexistingdirectory(parent=None, caption='', basedir='',
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options=QFileDialog.ShowDirsOnly):
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"""Wrapper around QtGui.QFileDialog.getExistingDirectory static method
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Compatible with PyQt >=v4.4 (API #1 and #2) and PySide >=v1.0"""
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# Calling QFileDialog static method
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if sys.platform == "win32":
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# On Windows platforms: redirect standard outputs
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_temp1, _temp2 = sys.stdout, sys.stderr
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sys.stdout, sys.stderr = None, None
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try:
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result = QFileDialog.getExistingDirectory(parent, caption, basedir,
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options)
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finally:
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if sys.platform == "win32":
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# On Windows platforms: restore standard outputs
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sys.stdout, sys.stderr = _temp1, _temp2
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if not is_text_string(result):
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# PyQt API #1
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result = to_text_string(result)
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return result
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def _qfiledialog_wrapper(attr, parent=None, caption='', basedir='',
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filters='', selectedfilter='', options=None):
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if options is None:
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options = QFileDialog.Options(0)
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try:
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# PyQt <v4.6 (API #1)
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from .QtCore import QString
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except ImportError:
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# PySide or PyQt >=v4.6
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QString = None # analysis:ignore
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tuple_returned = True
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try:
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# PyQt >=v4.6
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func = getattr(QFileDialog, attr+'AndFilter')
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except AttributeError:
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# PySide or PyQt <v4.6
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func = getattr(QFileDialog, attr)
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if QString is not None:
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selectedfilter = QString()
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tuple_returned = False
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# Calling QFileDialog static method
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if sys.platform == "win32":
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# On Windows platforms: redirect standard outputs
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_temp1, _temp2 = sys.stdout, sys.stderr
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sys.stdout, sys.stderr = None, None
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try:
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result = func(parent, caption, basedir,
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filters, selectedfilter, options)
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except TypeError:
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# The selectedfilter option (`initialFilter` in Qt) has only been
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# introduced in Jan. 2010 for PyQt v4.7, that's why we handle here
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# the TypeError exception which will be raised with PyQt v4.6
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# (see Issue 960 for more details)
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result = func(parent, caption, basedir, filters, options)
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finally:
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if sys.platform == "win32":
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# On Windows platforms: restore standard outputs
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sys.stdout, sys.stderr = _temp1, _temp2
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# Processing output
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if tuple_returned:
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# PySide or PyQt >=v4.6
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output, selectedfilter = result
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else:
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# PyQt <v4.6 (API #1)
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output = result
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if QString is not None:
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# PyQt API #1: conversions needed from QString/QStringList
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selectedfilter = to_text_string(selectedfilter)
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if isinstance(output, QString):
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# Single filename
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output = to_text_string(output)
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else:
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# List of filenames
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output = [to_text_string(fname) for fname in output]
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# Always returns the tuple (output, selectedfilter)
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return output, selectedfilter
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def getopenfilename(parent=None, caption='', basedir='', filters='',
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selectedfilter='', options=None):
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"""Wrapper around QtGui.QFileDialog.getOpenFileName static method
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Returns a tuple (filename, selectedfilter) -- when dialog box is canceled,
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returns a tuple of empty strings
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Compatible with PyQt >=v4.4 (API #1 and #2) and PySide >=v1.0"""
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return _qfiledialog_wrapper('getOpenFileName', parent=parent,
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caption=caption, basedir=basedir,
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filters=filters, selectedfilter=selectedfilter,
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options=options)
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def getopenfilenames(parent=None, caption='', basedir='', filters='',
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selectedfilter='', options=None):
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"""Wrapper around QtGui.QFileDialog.getOpenFileNames static method
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Returns a tuple (filenames, selectedfilter) -- when dialog box is canceled,
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returns a tuple (empty list, empty string)
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Compatible with PyQt >=v4.4 (API #1 and #2) and PySide >=v1.0"""
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return _qfiledialog_wrapper('getOpenFileNames', parent=parent,
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caption=caption, basedir=basedir,
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filters=filters, selectedfilter=selectedfilter,
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options=options)
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def getsavefilename(parent=None, caption='', basedir='', filters='',
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selectedfilter='', options=None):
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"""Wrapper around QtGui.QFileDialog.getSaveFileName static method
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Returns a tuple (filename, selectedfilter) -- when dialog box is canceled,
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returns a tuple of empty strings
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Compatible with PyQt >=v4.4 (API #1 and #2) and PySide >=v1.0"""
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return _qfiledialog_wrapper('getSaveFileName', parent=parent,
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caption=caption, basedir=basedir,
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filters=filters, selectedfilter=selectedfilter,
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options=options)
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