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. What value does each of the following expressions evaluate to? Verify your answers by typing the expressions into the Python shell.

   1. ’Computer’ + ’ Science’
   2. ’Darwin\’s’
   3. ’H2O’ * 3
   4. ’CO2’ * 0

2. Express each of the following phrases as Python strings using the appropriate type of quotation marks (single, double, or triple) and, if necessary, escape sequences. There is more than one correct answer for each of these phrases.

   1. They’ll hibernate during the winter.
   2. “Absolutely not,” he said.
   3. “He said, ‘Absolutely not,’” recalled Mel.
   4. hydrogen sulfide
   5. left\right

3. Rewrite the following string using single ...