python run with debugger

Published: 16 February 2024
on channel: CodeTime

Download this code from https://codegive.com
Title: A Comprehensive Guide to Debugging Python Code Using pdb
Introduction:
Debugging is an essential skill for every programmer. Python comes with a built-in debugger called pdb (Python Debugger) that allows you to step through your code, inspect variables, and identify and fix issues efficiently. In this tutorial, we'll explore the basics of using pdb to debug Python code.
Python's pdb comes pre-installed with the language, so there is no need to install it separately.
To use pdb in your code, you need to import it. You can either import the entire module or use specific functions. In your Python script, include the following line where you want to start debugging:
A breakpoint is a designated point in your code where the debugger will pause execution, allowing you to inspect the program's state. You can set breakpoints using the pdb.set_trace() function. Here's an example:
Save your script and run it using the Python interpreter. When the script encounters the pdb.set_trace() line, it will pause, and the debugger prompt will appear.
Displays the source code around the current line being executed.
Sets breakpoints at specified lines. break sets a breakpoint, and tbreak sets a temporary breakpoint.
Resumes program execution until the next breakpoint is encountered.
step moves the debugger into a function, and next executes the current line of code, stopping at the first possible occasion.
Prints the value of a variable or expression.
Quits the debugger and terminates the program.
Let's consider a simple example with a bug:
Insert a breakpoint using pdb.set_trace() to investigate the issue and fix it.
Remember, effective debugging requires practice. Experiment with different pdb commands and scenarios to become proficient in using the debugger.
By mastering Python's debugger, you'll be equipped to tackle complex issues in your code with confidence. Happy debugging!
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