Learning Python Design Patterns - Second Edition

The advantages and disadvantages of the Template Method pattern

The Template Method pattern provides you with the following advantages:

• As we saw earlier in the chapter, there is no code duplication.
• Code reuse happens with the Template Method pattern as it uses inheritance and not composition. Only a few methods need to be overridden.
• Flexibility lets subclasses decide how to implement steps in an algorithm.

The disadvantages of Template Method patterns are as follows:

• Debugging and understanding the sequence of flow in the Template Method pattern can be confusing at times. You may end up implementing a method that shouldn't be implemented or not implementing an abstract method at all. Documentation and strict error handling has to be done by the ...