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Creating GUI applications with Python and PyQt.

To complete this tutorial and get the most out of it, you should be comfortable with the following concepts: In this project, you’ll use the second approach, which might be more intuitive and user-friendly, providing a better user experience. Enabling and disabling widgets depending on the application’s state.Using conditional statements to check the state and take actions accordingly.There are at least two general strategies for managing the GUI update:

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You’ll also write some code to ensure that the GUI gets updated according to the file renaming progress and state. In this example, you’ll set up a progress bar to reflect the operation progress. The file renaming process needs to be connected with the application’s GUI so the user knows what is happening at any given time. To prevent GUI freezing issues, you’ll offload the renaming process to a worker thread using QThread. This might cause your application’s GUI to freeze. Depending on the number of files that you need to rename, the operation can take a considerable amount of time. Next, you need to code the functionality to load multiple files into your application and rename them in one go. rename() on that object to rename the associated file or directory. Once you have a Path object that points to a physical file or directory, you can call. Typically, you’ll use pathlib.Path to manage file and directory paths in your applications. This module provides classes that represent file system paths and allow operations on them. Note: Python 3.4 added pathlib to the standard library. In this tutorial, however, you’ll use pathlib for both tasks. For example, you have os.path to work with file system paths and os to use operating system functionalities, such as renaming files with os.rename(). When it comes to managing files and directories in Python, you have several options in the standard library. With this tool, your GUI creation process will be fast and productive. This tool provides a user-friendly interface to create GUIs by dragging and dropping graphical components (widgets) on a blank form. To create the application’s GUI, you’ll use Qt Designer.

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Update the application’s GUI according to the file renaming process progress.

Provide the functionality to load and rename multiple files.

To build the application, you’ll need to take the following steps: It’ll allow you to load several files from an existing directory and rename them using a descriptive filename prefix and consecutive numbers. Your bulk file rename tool will be a fully functional GUI application. Get the Source Code: Click here to get the source code you’ll use to build a bulk file rename tool with Python in this tutorial.

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To download the project’s directory structure, click the link below:

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You’ll see how to create these two files with Qt Designer and pyuic5 later in this tutorial. Go ahead and create this directory structure with all the files and modules except for window.ui and window.py.

window.ui holds a Qt Designer file that contains the code for the application’s main window in XML format.

You’ll see how to generate this file using pyuic5.

window.py contains the Python code for the application’s main window.

_init_.py enables ui/ as a Python package.

It’ll contain the following files and modules: The ui/ subdirectory will provide a package to store GUI-related code.

views.py provides the application’s GUI and related functionalities.

rename.py provides the file renaming functionalities.

app.py provides the PyQt skeleton application.

_init_.py enables rprename/ as a Python package.

Then you have the rprename/ directory that will hold a Python package with the following modules:

rprenamer.py provides an entry-point script to run the application.

requirements.txt provides the list of external dependencies for the project.

Having a README.md file for your project is considered a best practice in programming, especially if you’re planning to release it as an open source solution.

README.md provides a general project description and instructions on installing and running the application.

Here, rprename_project/ is the project’s root directory, where you’ll create the following files: