Mastering Python Scripting for System Administrators

Within a Python script

The previous two techniques will start the debugger at the beginning of a Python program. But this third technique is best for long-running processes. To start the debugger within a script, use set_trace().

Now, modify your pdb_example.py file as follows:

import pdbclass Student:            def __init__(self, std):                        self.count = std             def print_std(self):                        for i in range(self.count):                                    pdb.set_trace()                                    print(i)                        return if __name__ == '__main__':            Student(5).print_std()

Now, run the program as follows:

student@ubuntu:~$ python3 pdb_example.py> /home/student/pdb_example.py(10)print_std()-> print(i)(Pdb) continue0> /home/student/pdb_example.py(9)print_std()-> pdb.set_trace()(Pdb)

set_trace() is a Python function, therefore you can call it ...