Practical Programming, 2nd Edition

Exercises

Here are some exercises for you to try on your own. Solutions are available at http://pragprog.com/titles/gwpy2/practical-programming.

1. In the Python shell, execute the following method calls:

   1. ’hello’.upper()
   2. ’Happy Birthday!’.lower()
   3. ’WeeeEEEEeeeEEEEeee’.swapcase()
   4. ’ABC123’.isupper()
   5. ’aeiouAEIOU’.count(’a’)
   6. ’hello’.endswith(’o’)
   7. ’hello’.startswith(’H’)
   8. ’Hello {0}’.format(’Python’)
   9. ’Hello {0}! Hello {1}!’.format(’Python’, ’World’)

2. Using string method count, write an expression that produces the number of o’s in ’tomato’.

3. Using string method find, write an expression that produces the index of the first occurrence of o in ’tomato’.

4. Using string method find, write a single expression that produces the index of the