jupyter notebook python debugger

Published: 20 January 2024
on channel: CodeSync

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Jupyter Notebook is a powerful tool for interactive computing in Python. When working on complex projects, debugging becomes an essential part of the development process. In this tutorial, we'll explore how to use the Python debugger (pdb) within Jupyter Notebooks to identify and fix issues in your code.
Make sure you have the following installed:
Open Jupyter Notebook:
Launch Jupyter Notebook in your terminal or command prompt using the following command:
This will open Jupyter in your default web browser.
Create a New Notebook:
Create a new Jupyter Notebook by clicking on the "New" button and selecting "Python 3" under "Notebooks."
Cell Magic Command:
In a Jupyter cell, you can use the %%pdb cell magic command to enable the debugger for that specific cell. Place this command at the beginning of the cell where you want to start debugging.
Let's consider a simple example where we have a function with a logical error:
Now, let's create a Jupyter cell to debug this function:
When you run this cell, the debugger will be activated, and it will stop at the line causing the error. Use the debugger commands to identify the issue:
You'll notice an error message indicating division by zero. Fix the function by handling this edge case:
Now, rerun the cell, and the function should execute without errors.
Using the Python debugger in Jupyter Notebooks is a valuable skill for identifying and fixing issues in your code. Experiment with different debugger commands to efficiently debug your code and improve your development workflow.
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