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events.py
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events.py
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import json
from json import JSONEncoder
from typing import List
class Event:
def __init__(self, **params):
# Columns to present in public schema:
self.__schema = [
"source_id",
"name",
"start_date",
"city",
"state",
"country",
"url",
"virtual",
"latitude",
"longitude"
]
self.__dict__.update(params)
# Validation:
self.latitude = float(self.latitude) if (self.latitude is not None) else None
self.longitude = float(self.longitude) if (self.longitude is not None) else None
if self.latitude is not None:
if self.latitude < -90 or self.latitude > 90:
self.__dict__["latitude"] = self.__dict__["latitude"] % 90
if self.longitude is not None:
if self.longitude < -180 or self.longitude > 180:
self.__dict__["longitude"] = self.__dict__["longitude"] % 180
@property
def city(self):
return self.__dict__.get("city")
@property
def country(self):
return self.__dict__.get("country")
@property
def state(self):
return self.__dict__.get("state")
@property
def start_date(self):
return self.__dict__.get("start_date")
@property
def name(self):
return self.__dict__.get("name")
@property
def distances(self):
return self.__dict__.get("distances")
@property
def latitude(self):
return self.__dict__.get("latitude")
@property
def longitude(self):
return self.__dict__.get("longitude")
@latitude.setter
def latitude(self, latitude):
self.__dict__["latitude"] = latitude
@longitude.setter
def longitude(self, longitude):
self.__dict__["longitude"] = longitude
def todict(self, schema: bool = False):
return self.__dict__ if not schema else {k: v for k, v in self.__dict__.items() if k in self.__schema}
def __eq__(self, other):
if not isinstance(other, Event):
return False
return self.__dict__ == other.__dict__
class EventList:
def __init__(self, events: List[Event]):
self.events = events
def __get__(self, i):
return self.events[i]
def __getitem__(self, i):
return self.events[i]
def __len__(self):
return len(self.events)
def __eq__(self, other):
if not isinstance(other, EventList):
return False
return self.events == other.events
class EventEncoder(JSONEncoder):
def default(self, o):
return o.__dict__
class EventListEncoder(JSONEncoder):
def default(self, o):
if not isinstance(o, EventList):
raise TypeError((
f"EventListEncoder can only encode EventList objects "
f"(received: {type(o)})"))
return [event.__dict__ for event in o.events]
def event_dumps(obj):
return json.dumps(obj, cls=EventEncoder)
def event_list_dumps(obj):
return json.dumps(obj, cls=EventListEncoder)
def event_loads(out):
return Event(**json.loads(out))
def _event_list_loader(out):
return EventList([Event(**event) for event in out])
def event_list_loads(out):
return _event_list_loader(json.loads(out))
def celery_event_list_loads(out):
return _event_list_loader(json.loads(out)[0][0])