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Applied iterator pattern to Location #4

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Applied iterator pattern to Location #4

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34 changes: 33 additions & 1 deletion app/location/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,10 +2,42 @@
from ..coordinates import Coordinates
from ..utils import countries
from ..utils.populations import country_population
from abc import ABCMeta, abstractmethod

class Iterator(metaclass=ABCMeta):
@abstractmethod
def getNext(self): pass

@abstractmethod
def hasNext(self): pass

class LocationInterface(metaclass=ABCMeta):
@abstractmethod
def country_code(self): pass

@abstractmethod
def country_population(self): pass

@abstractmethod
def serialize(self): pass

class LocationIterator(Iterator):
def __init__(self, items):
self.index = 0
self.items = items

def getNext(self):
if self.index < len(self.items):
item = self.items[self.index]
self.index += 1

return item

def hasNext(self):
return self.index < len(self.items)

# pylint: disable=redefined-builtin,invalid-name
class Location: # pylint: disable=too-many-instance-attributes
class Location(LocationInterface): # pylint: disable=too-many-instance-attributes
"""
A location in the world affected by the coronavirus.
"""
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