Popular GUI Frameworks
There are several popular Python GUI toolkits. The most popular are as follows:
Qt is one of the most popular libraries for cross-platform development. It is the main graphical library for the KDE desktop. There have several licenses available with the main ones being for commercial and open-source use. If your application is commercial i.e. closed-source then you must pay for a license to use it. If an application is open-source then you can use the GPL license; however, you will be unable to commercialize your program without upgrading the license.
It contains a graphical layout utility that permits the user to drag & drop graphical widgets for quick design of the interface. On the other hand, the developer can hand code the interface layout. It also supports non-GUI features containing SQL database access, network support, XML parsing. It is written in C++ but python binding is available via PyQt.
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GTK stands for GIMP Tool Kit which is created for the development of the GIMP image software. GTK+ developed into the graphical library that controls the GNOME desktop. Widgets are the basic building blocks of a GUI application.
GTK+ is open source under the GPL license. When Qt was selected to power the KDE desktop then trolltech had a proprietary license for it. Because it goes against the free Software concept, GTK was created to permit people to use the GNOME desktop and GTK applications as open-source software.
GTK does not essentially have a built-in drag & drop interface however the wxGlade utility gives this functionality. The original GTK was written in C whereas GTK+ is written in C++ using OOP practices and PyGTK is the Python binding for GTK+.
It is a cross-platform toolkit that is used for creating desktop GUI applications. It is a python implementation of wxWidgets that means programs of python interact with python wrappers of the fundamental C, C++ code. Using wxPython developers can create applications on Mac OS, Windows, and on different Unix systems.
wxWidgets is a general-purpose cross-platform C++ library. wxPython is an open Source Software that is licensed under the GPL. Programs that are written with wxPython use the native widgets of an OS.
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It is a Python binding to the Tk GUI toolkit. Tk is the default GUI library for Python development due to its addition to the core Python language. It is the original GUI library for the Tcl language. The Tkinter toolset is quite limited but it is easy to learn making it build simple GUI programs in Python.
It has three built-in layout managers:
Pack geometry manager – Manage widgets in vertical and horizontal boxes
Grid geometry manager – Put widgets in a two-dimensional grid
Place geometry manager – Put widgets on their containers using absolute positioning.
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JPython: A Combination of java and python
It is completely written in Java by Jim Hugunin. Programmers of python can use their python information in Java-based development environments and also programmers of java can use the python scripting language as a way to control their Java systems and to test libraries etc.
The JPython installation includes a number of parts:
- jpython: The equivalent of the Python program
- jpythonc: It acquires a JPython program and then compiles it to Java class files. The resulting Java class files can be used as any Java class file. For example as servlets or as beans.
- A set of modules that provide the JPython user with the huge majority of the modules in the standard Python library.
Using JPython is very similar to using Python:
JPython 1.0.3 on java1.2beta4
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