Writing to a File Python Tutorial. Welcome to another Python 3 basics tutorial. In this tutorial we're going to cover the basics of writing to a file. It should be noted that there are two methods for saving data to a file, and those are writing and appending. Writing to a file will write that bit of data, whatever it.

• Python Tkinter Gui Examples

• Python 3 Basic Tutorial

• Python 3 Advanced Tutorial

• Python 3 Useful Resources

• Selected Reading

Python provides various options for developing graphical user interfaces (GUIs). The most important features are listed below.

• Tkinter − Tkinter is the Python interface to the Tk GUI toolkit shipped with Python. We would look this option in this chapter.

• wxPython − This is an open-source Python interface for wxWidgets GUI toolkit. You can find a complete tutorial on WxPython here.

• PyQt −This is also a Python interface for a popular cross-platform Qt GUI library. TutorialsPoint has a very good tutorial on PyQt here.

• JPython − JPython is a Python port for Java, which gives Python scripts seamless access to the Java class libraries on the local machine http://www.jython.org.

There are many other interfaces available, which you can find them on the net.

Tkinter Programming

Tkinter is the standard GUI library for Python. Python when combined with Tkinter provides a fast and easy way to create GUI applications. Tkinter provides a powerful object-oriented interface to the Tk GUI toolkit.

Creating a GUI application using Tkinter is an easy task. All you need to do is perform the following steps −

• Import the Tkinter module.

• Create the GUI application main window.

• Add one or more of the above-mentioned widgets to the GUI application.

• Enter the main event loop to take action against each event triggered by the user.

Example

This would create a following window −

Tkinter Widgets

Tkinter provides various controls, such as buttons, labels and text boxes used in a GUI application. These controls are commonly called widgets.

There are currently 15 types of widgets in Tkinter. We present these widgets as well as a brief description in the following table −

Standard attributes

Let us look at how some of their common attributes, such as sizes, colors and fonts are specified.

Geometry Management

All Tkinter widgets have access to the specific geometry management methods, which have the purpose of organizing widgets throughout the parent widget area. Tkinter exposes the following geometry manager classes: pack, grid, and place.

• The pack() Method − This geometry manager organizes widgets in blocks before placing them in the parent widget.

• The grid() Method − This geometry manager organizes widgets in a table-like structure in the parent widget.

• The place() Method − This geometry manager organizes widgets by placing them in a specific position in the parent widget.

I am looking to make a PDF parser from scratch using Python (or) any leads to tweaking existing libraries/algorithms.

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1 Answer

Python Tkinter Gui Examples

Here you can find some nice tools for your need, like:

• pdfrw: Read and write PDF files
• slate : Active development. Simplifies extracting text from PDF files
• PyPDF2 : Active development. Split, merge, crop, etc
• PDFMiner : Active development. Extracting text, images, object coordinates, metadata from PDF file

And there is more in this link.

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