Doc: Add information about running Qt for Python applications

Change-Id: Ibd9ed61bd1f771c8081f2c2d2fcc492f0a87da11
Reviewed-by: Cristian Maureira-Fredes <cristian.maureira-fredes@qt.io>

doc/src/projects/creator-only/creator-projects-opening.qdoc

@@ -1,7 +1,7 @@
 
 /****************************************************************************
 **
-** Copyright (C) 2018 The Qt Company Ltd.
+** Copyright (C) 2019 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the Qt Creator documentation.
@@ -58,6 +58,10 @@
     select the \uicontrol Options link, or select \uicontrol Tools >
     \uicontrol Options > \uicontrol Kits.
 
+    Qt for Python projects rely on the \l{Using Language Servers}
+    {experimental language server client} for code completion,
+    highlighting, and other useful features.
+
     If \QC cannot find an existing build for a particular \l{glossary-buildandrun-kit}{kit},
     it starts out
     from a clean slate, and creates new debug and release build configurations
@@ -79,8 +83,8 @@
         \li Select \uicontrol File > \uicontrol {Open File or Project}
             (\key Ctrl+O or \key Cmd+O on \macos) and select the project file
             for the project to open: \e {.pro} (qmake), \e {CMakeLists.txt}
-            (CMake), \e {.qbs} (Qbs), or \e {Makefile.am} (Autotools,
+            (CMake), \e {.qbs} (Qbs), \e {pyproject} (Python), or
-            experimental).
+            \e {Makefile.am} (Autotools, experimental).
 
         \li In the \uicontrol {Configure Project} tab, select kits for building and running your
             project, and click \uicontrol {Configure Project}.

doc/src/projects/creator-only/creator-projects-settings-run.qdoc

@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2018 The Qt Company Ltd.
+** Copyright (C) 2019 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the Qt Creator documentation.
@@ -117,4 +117,6 @@
     \image qmldesigner-run-custom-exe.png "Run settings for custom executables"
 
     \include qtquick/creator-projects-settings-run-qtquick.qdocinc run settings qt quick ui
+    \include python/creator-python-run.qdocinc run settings python
+
 */

doc/src/projects/creator-projects-running.qdoc

@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2018 The Qt Company Ltd.
+** Copyright (C) 2019 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the Qt Creator documentation.
@@ -85,5 +85,6 @@
 
     \if defined(qtcreator)
     \include qnx/creator-projects-running-qnx.qdocinc running on qnx
+    \include python/creator-python-run.qdocinc running python
     \endif
 */

doc/src/python/creator-python-run.qdocinc

@@ -0,0 +1,73 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Creator documentation.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Free Documentation License Usage
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of
+** this file. Please review the following information to ensure
+** the GNU Free Documentation License version 1.3 requirements
+** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
+**
+****************************************************************************/
+
+/*!
+//! [running python]
+    \section1 Running Python Projects
+
+    You can execute Qt for Python applications directly from \QC. If you
+    used the \l{Creating Qt for Python Applications}{new project wizard}
+    to create the application project, the \c main.py file is automatically
+    executed when you select the \uicontrol Run button.
+
+    You can specify another file to execute in the
+    \l{Specifying Run Settings for Python Projects}{run settings}
+    of the project.
+
+//! [running python]
+
+
+//! [run settings python]
+
+    \section1 Specifying Run Settings for Python Projects
+
+    You can specify settings for running Qt for Python applications:
+
+    \image qtcreator-python-run-settings.png
+
+    \list
+        \li In the \uicontrol Interpreter field, specify the path to the
+            Python executable.
+        \li In the \uicontrol Script field, you can see the path to the
+            main file of the project that will be run.
+        \li In the \uicontrol {Command line arguments} field, specify
+            command line arguments to be passed to the executable.
+    \endlist
+
+    If you want to run some other Python file than \c main.py,  create a custom
+    executable run configuration:
+
+    \image qtcreator-python-run-settings-custom-executable.png
+
+    \list 1
+        \li Select \uicontrol Add > \uicontrol {Custom Executable}.
+        \li In the \uicontrol Executable field, specify the path to the
+            Python executable.
+        \li In the \uicontrol {Command line arguments} field, select
+            the Python file to run.
+    \endlist
+
+//! [run settings python]
+*/