#!/usr/bin/env python
 
"""Expansion Example
 
Demonstrates how to expand expressions.
"""
 
import sympy
from sympy import pprint
 
 
def main():
    a = sympy.Symbol('a')
    b = sympy.Symbol('b')
    e = (a + b)**5
 
    print("\nExpression:")
    pprint(e)
    print('\nExpansion of the above expression:')
    pprint(e.expand())
    print()
 
if __name__ == "__main__":
    main()