```p : prints value of a variable```

```n/next : Continue execution until the next line in the current function is reached or it returns.```

```s/step : Execute the current line and stop at the first possible occasion (either in a function that is called or in the current function).```

```cont/continue : Continue execution and only stop when a breakpoint is encountered.```

```h/help : get a list of available commands```

```q/quit : exit debugging session```


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```pdb``` is a built-in python debugging tool. It is a very simple and effective tool. To start debugging session, we write the following line of code:
```python
import pdb; pdb.set_trace()
``` 
When this line is reached, python will stop the execution and start an interactive debugging session in the console.

Python 3.7 brings the ability to use breakpoint() rather than 
import pdb;pdb.set_trace()

Python built-in debugger "pdb"

Python Documentation

Some useful commands for the Python Debugger

Starting Python 3.7 version, a built-in function ```breakpoint()``` was added to to the standard library. ```breakpoint()```can be used instead of ```import pdb; pdb.set_trace()```

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