outdoorblake/class-11-oop-advanced

Advanced OOP Practice - Ordered Dict

Class 11: Advanced OOP

Your job is to implement the current OrderedDict. The recommended way to create it is to keep two synched lists. One containing the keys and the other the values. Example:

d = {
  'a': 1,
  'b': 2,
  'c': 3
}

keys = ['a', 'b', 'c']
values = [1, 2, 3]

The best way to iterate over these two collections is with the [zip](https://docs.python.org/3/library/functions.html#zip) function:

keys = ['a', 'b', 'c']
values = [1, 2, 3]

for k, v in zip(keys, values):
  print('{} => {}'.format(k, v))

Output:

a => 1
b => 2
c => 3

Install

$ pip install -r requirements.txt

Usage

There's a script main.py created for debugging. Feel free to change it and experiment with it.

Tests

Tests in tests.py are written in order. You can use the -k flag to select them:

$ py.test tests.py -k test_set_new_items

Homework

Look for those tests marked with pytest.mark.skip.