Python debugger - Python Debugging Tool

Example

import pdb; pdb.set_trace()

Scenario

A developer inserts a breakpoint in a section of code where a variable is unexpectedly modified. When execution reaches this point, the program pauses, allowing examination of variable states.

Example

Using commands like 'step' (s) to move into function calls or 'next' (n) to execute the next line of code without stepping into functions.

Scenario

To understand how a loop is iterating over a dataset or why a conditional branch is not executing as expected, a developer steps through each line.

Example

While paused at a breakpoint, typing variable names to inspect their current values.

Scenario

Identifying the exact moment when a variable becomes None or takes an unexpected value, to debug null reference errors or data corruption.

Example

Using the 'print' command to evaluate and display the value of expressions.

Scenario

Evaluating the outcome of a complex expression or function call in the current context, without altering the program's execution flow.

Example

Directly modifying the value of a variable during a debugging session to test different scenarios without stopping the program.

Scenario

Quickly testing how changes in variable values would affect the execution path or outcome of the program, facilitating rapid debugging and experimentation.