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# Tic Tac Toe

from typing import Optional, Tuple
import uuid
import random

Move = Tuple[int, int]


class Stats:

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1. Test should not leave the function context. ** Most important **
2. Test should verify the calls to methods / functions with side effects
3. Test should have descriptive names ( alterative to this is BDD )
4. Function and methods should only get the inputs that are essential to test functionality.
5. Test should be per function / method not per module / class. ( You can couple tests based on functionality )
6. Test should focus on branch coverage than LOC.

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class SlugifyMixin:
    slug_source_field = None
    slug_target_field = None

    def __init__(self, *args, **kwargs):
        assert self.slug_source_field is not None, 'slug_source_field is required'
        assert self.slug_target_field is not None, 'slug_target_field is required'
        super().__init__(*args, **kwargs)

    def save(self, *args, **kwargs):

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import PIL.Image
import os


def getCameraModel(image_name):
    # 272 is key for camera model
    try:
        camera_model = PIL.Image.open(image_name)._getexif()[272]
    except:
        camera_model = None