debugging_python.py

"""
Debugging in Python

Two common debugging techniques:

1. Print statements with f-strings - Quick way to trace values
2. The pdb module - Interactive debugging with breakpoints

PDB Commands:
    help     : list commands
    p <var>  : print variable
    n        : next line
    c        : continue
    q        : quit
    whatis   : show type of a value
"""

import pdb


# =============================================================================
# DEBUGGING WITH PRINT + F-STRINGS
# =============================================================================

def add_two_num(a, b):
    result = a + b
    print(f"Debug: a={a}, b={b}, result={result}")
    return result


print("=" * 50)
print("DEBUGGING WITH PRINT + F-STRINGS")
print("=" * 50)
print()

add_two_num(1, 2)


# =============================================================================
# INTERACTIVE DEBUGGING WITH PDB
# =============================================================================

def div_two_num(a, b):
    pdb.set_trace()  # Breakpoint
    return a / b


print()
print("=" * 50)
print("INTERACTIVE DEBUGGING WITH PDB")
print("=" * 50)
print()
print("Running div_two_num(10, 2) with pdb.set_trace()...")

print(div_two_num(10, 2))