Technical requirements

See the requirements presented in Chapter 1. The additional technical requirements for the code discussed in this chapter are the following:

• For the State pattern section, install the state_machine module, using the command: python -m pip install state_machine.
• For the Interpreter pattern section, install the pyparsing module, using the command: python –m pip install pyparsing.
• For the Template pattern section, install the cowpy module, using the command: python -m pip install cowpy.