Prefer PyQt5 if available as Qt4 is discontinued

Author: The-Compiler

CHANGELOG.rst

@@ -1,5 +1,8 @@
-1.12.dev
---------
+2.0
+---
+
+- ``pytest-qt`` now defaults to using ``PyQt5`` if ``PYTEST_QT_API`` is not set.
+  Before, it preferred ``PySide`` which is using the discontinued Qt4.
 
 - Exceptions caught by ``pytest-qt`` in ``sys.excepthook`` are now also printed
   to ``stderr``, making debugging them easier from within an IDE.

README.rst

@@ -72,16 +72,16 @@ Features
 Requirements
 ============
 
-Works with either PySide_, PyQt_ (``PyQt4`` and ``PyQt5``) picking whichever
+Works with either PySide_ or PyQt_ (``PyQt5`` and ``PyQt4``) picking whichever
 is available on the system, giving preference to the first one installed in
 this order:
 
+- ``PyQt5``
 - ``PySide``
 - ``PyQt4``
-- ``PyQt5``
 
 To force a particular API, set the environment variable ``PYTEST_QT_API`` to
-``pyside``, ``pyqt4``, ``pyqt4v2`` or ``pyqt5``. ``pyqt4v2`` sets the ``PyQt4``
+``pyqt5``, ``pyside``, ``pyqt4``, or ``pyqt4v2``. ``pyqt4v2`` sets the ``PyQt4``
 API to `version 2 <http://pyqt.sourceforge.net/Docs/PyQt4/incompatible_apis.html>`_.
 
 

docs/intro.rst

@@ -30,16 +30,16 @@ Python 2.7 or later, including Python 3+.
 
 Requires pytest version 2.7 or later.
 
-Works with either ``PySide``, ``PyQt4`` or ``PyQt5``, picking whichever
+Works with either ``PyQt5``, ``PySide`` or ``PyQt4``, picking whichever
 is available on the system giving preference to the first one installed in
 this order:
 
+- ``PyQt5``
 - ``PySide``
 - ``PyQt4``
-- ``PyQt5``
 
 To force a particular API, set the environment variable ``PYTEST_QT_API`` to
-``pyside``, ``pyqt4``, ``pyqt4v2`` or ``pyqt5``. ``pyqt4v2`` sets the ``PyQt4``
+``pyqt5``, ``pyside``, ``pyqt4`` or ``pyqt4v2``. ``pyqt4v2`` sets the ``PyQt4``
 API to `version 2 <version2>`_
 
 .. _version2: http://pyqt.sourceforge.net/Docs/PyQt4/incompatible_apis.html

pytestqt/qt_compat.py

@@ -25,12 +25,12 @@ def _try_import(name):
             return False
 
     def _guess_qt_api():
-        if _try_import('PySide'):
+        if _try_import('PyQt5'):
+            return 'pyqt5'
+        elif _try_import('PySide'):
             return 'pyside'
         elif _try_import('PyQt4'):
             return 'pyqt4'
-        elif _try_import('PyQt5'):
-            return 'pyqt5'
         else:
             msg = 'pytest-qt requires either PySide, PyQt4 or PyQt5 to be installed'
             raise RuntimeError(msg)