run python script in debug mode from command line
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Title: Running Python Scripts in Debug Mode from the Command Line
Introduction:
Debugging is a crucial part of software development that allows developers to identify and fix issues in their code. In Python, the built-in pdb (Python Debugger) module provides a powerful tool for debugging scripts. This tutorial will guide you through running a Python script in debug mode from the command line, allowing you to step through your code, inspect variables, and diagnose issues effectively.
Step 1: Add Debugging Statements to Your Code
Before running your script in debug mode, it's essential to add breakpoints or debugging statements to the code. You can achieve this using the pdb module. Import the module and place the following line where you want to set a breakpoint:
This line will pause the script's execution at that point, allowing you to interact with the debugger.
Step 2: Save and Close Your Code
Make sure to save your changes before proceeding to the next step.
Step 3: Open a Terminal or Command Prompt
Open a terminal or command prompt window on your system.
Step 4: Navigate to the Script's Directory
Use the cd command to navigate to the directory containing your Python script.
Step 5: Run Python Script in Debug Mode
Execute the following command to run your Python script in debug mode:
Replace your_script.py with the name of your Python script.
Step 6: Debugging Commands
Once the script starts, you'll be in the pdb debugger prompt. Here are some useful commands:
You can also inspect variables, set breakpoints, and perform other debugging actions using pdb commands.
Step 7: Exiting Debug Mode
To exit the debugger and end the script, use the q command or press Ctrl + D.
Conclusion:
Running Python scripts in debug mode from the command line with pdb is a powerful way to identify and resolve issues in your code. By following the steps in this tutorial, you can effectively leverage the Python Debugger to streamline your debugging process.
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