8000 Added errors project and also section 3 project brief. · jaaks/complete-python-course@80edac9 · GitHub
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Added errors project and also section 3 project brief.
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‎.gitignore

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*.key
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*.indd
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*.png
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.DS_Store
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.idea/
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__pycache__/

‎section3/milestone_project_brief.pdf

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‎section5/errors_project/app.py

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class Car:
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def __init__(self, make, model):
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self.make = make
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self.model = model
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def __repr__(self):
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return f'<Car {self.make} {self.model}>'
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class Garage:
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def __init__(self):
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self.cars = []
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def __len__(self):
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return len(self.cars)
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def add_car(self, car):
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if not isinstance(car, Car):
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raise ValueError(f'Tried to add a `{car.__class__.__name__}` to the garage, but you can only add `Car` objects.')
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self.cars.append(car)
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ford = Garage()
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fiesta = Car('Ford', 'Fiesta')
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try:
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ford.add_car('Fiesta')
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except TypeError:
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print('Your car was not a Car!')
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except ValueError:
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print('Something weird happened...')
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finally:
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print(f'The garage now has {len(ford)} cars.')

‎section5/errors_project/errors.py

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class RuntimeErrorWithCode(Exception):
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def __init__(self, message, code):
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super().__init__(f'Error code {code}: {message}')
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self.code = code
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err = RuntimeErrorWithCode('An error happened.', 500)

‎section5/errors_project/user_score.py

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class User:
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def __init__(self, name, engagement):
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self.name = name
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self.engagement_metrics = engagement
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self.score = 0
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def __repr__(self):
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return f'<User {self.name}>'
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def email_engaged_user(user):
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try:
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user.score = perform_calculation(user.engagement_metrics)
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except KeyError:
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print('Incorrect values provided to our calculation function.')
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else:
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if user.score > 500:
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send_engagement_notification(user)
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def perform_calculation(metrics):
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return metrics['clicks'] * 5 + metrics['hits'] * 2
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def send_engagement_notification(user):
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print(f'Notification sent to {user}.')
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my_user = User('Rolf', {'clicks': 61, 'hits': 100})
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email_engaged_user(my_user)

‎section7/milestone_2/utils/database.py

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cursor.execute('SELECT * FROM books')
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books = cursor.fetchall()
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return books
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