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real_estate_property.py
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real_estate_property.py
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from functools import reduce
def to_str_if_none(x):
if x is None:
return str(x)
else:
return x
class ObjectWithDictEquality(object):
def __eq__(self, other):
"""Member wise equality."""
if type(other) is type(self):
return self.__dict__ == other.__dict__
return False
def __ne__(self, other):
"""Not `return not self.__eq__(other)`."""
return not self == other
class Property(ObjectWithDictEquality):
def __init__(self, sale_type, details, address_text):
self.sale_type = sale_type
self.details = details
self.address_text = address_text
self.state_and_postcode = NotYetPopulated()
# self.address = NotYetPopulated()
self.self_validation()
def populate_address(self, address):
raise RuntimeError('This is no longer supported.')
def is_valid(self):
return all(self.map_attributes(lambda x: x.is_valid()))
def error_types(self):
errors = self.map_attributes(lambda x: None if x.is_valid() else x)
return [x for x in errors if x is not None]
def error_type_name(self):
# This relies on map_attributes use of ordered_attributes to assume
# that the first error gets precedence
return str(type(self.error_types()[0]))
def to_tuple(self):
tupled_tuples = self.map_attributes(lambda x: x.to_tuple())
flatened_tuples = self.sum_tuples(tupled_tuples)
return flatened_tuples
return self.map_attributes(lambda x: x.to_tuple())
def column_names(self):
grouped_names = self.map_attributes(lambda x: type(x).column_names())
flatened_names = self.sum_tuples(grouped_names)
return flatened_names
def summarise(self):
return (
'Property: \n - %s\n - %s\n - %s\n - %s' %
self.map_attributes(lambda x: x.summarise())
)
def ordered_attributes(self):
return [
self.sale_type,
self.details,
self.address_text,
self.state_and_postcode
]
def map_attributes(self, fn):
return tuple(map(fn, self.ordered_attributes()))
def sum_tuples(self, tuples):
return tuple(reduce(lambda y1, y2: y1 + y2, tuples))
def self_validation(self):
type_checks = [
(self.sale_type, SaleType),
(self.details, Details),
(self.address_text, AddressText),
(self.state_and_postcode, NotYetPopulated)
]
self.type_check(type_checks)
def type_check(self, checks):
for attr, required_type in checks:
if not isinstance(attr, required_type):
raise TypeError('%s is not %s' %
(str(attr), str(required_type))
)
class EmptyPropertyAttribute(ObjectWithDictEquality):
def __init__(self):
pass
def is_valid(self):
return False
def summarise(self):
return ''
class NotYetPopulated(EmptyPropertyAttribute):
def not_yet_populated_error(self):
raise RuntimeError('This field needs to be populated')
def is_valid(self):
self.not_yet_populated_error()
def summarise(self):
self.not_yet_populated_error()
def column_names():
self.not_yet_populated_error()
def to_tuple(self):
self.not_yet_populated_error()
class DataContentTypeNotSupported(Property):
def __init__(self, data_content_type):
self.data_content_type = data_content_type
self.sale_type = EmptyPropertyAttribute()
self.details = EmptyPropertyAttribute()
self.address_text = EmptyPropertyAttribute()
def is_valid(self):
return False
def summarise(self):
return 'data-content-type not supported, %s' % self.data_content_type
class AddressText(ObjectWithDictEquality):
def __init__(self, string):
self.string = string
def is_valid(self):
return True
def summarise(self):
return self.string
def column_names():
return ('address_text',)
def to_tuple(self):
return (self.string,)
class Address(ObjectWithDictEquality):
def __init__(self,
house, house_number, road, suburb, state, postcode,
address_is_valid):
self.house = house
self.house_number = house_number
self.road = road
self.suburb = suburb
self.state = state
self.postcode = postcode
self.address_is_valid = address_is_valid
def is_valid(self):
return True
def to_tuple(self):
return (
self.house,
self.house_number,
self.road,
self.suburb,
self.state,
self.postcode,
self.address_is_valid
)
def column_names(self):
return (
'house',
'house_number',
'road',
'suburb',
'state',
'postcode',
'address_is_valid'
)
def summarise(self):
return (
'%s, %s, %s, %s, %s %s, %s' %
self.to_tuple()
)
class AddressParseFailed(ObjectWithDictEquality):
def __init__(self, string, components):
self.string = string
self.components = components
def is_valid(self):
return False
def summarise(self):
return ('Address parsing failed, %s, %s' %
(self.string, str(self.components))
)
class StateAndPostcode(ObjectWithDictEquality):
def __init__(self, state, postcode):
self.state = state
self.postcode = postcode
self.init_check()
def is_valid(self):
return True
def to_tuple(self):
return (
self.state,
self.postcode
)
def column_names():
return (
'state',
'postcode'
)
def summarise(self):
return (
'%s, %s' % (self.state, str(self.postcode))
)
def init_check(self):
if self.state is None:
raise(RuntimeError('State is required.'))
class Details(ObjectWithDictEquality):
def __init__(self, property_type, bedrooms, bathrooms, garage_spaces,
land_area, floor_area):
self.property_type = property_type
self.bedrooms = bedrooms
self.bathrooms = bathrooms
self.garage_spaces = garage_spaces
self.land_area = land_area
self.floor_area = floor_area
self.init_check()
def is_valid(self):
return True
def to_tuple(self):
return self.property_type.to_tuple() + (
self.bedrooms,
self.bathrooms,
self.garage_spaces
)
def column_names():
return PropertyType.column_names() + (
'bedrooms',
'bathrooms',
'garage_spaces'
)
def summarise(self):
return (
'%s, %s bedrooms, %s bathrooms, %s garage spaces' %
(self.property_type.name,
str(self.bedrooms),
str(self.bathrooms),
str(self.garage_spaces))
)
def init_check(self):
if self.property_type is None:
raise(RuntimeError('Required Property Details are missing.'))
class SaleType(ObjectWithDictEquality):
def __init__(self, name, prices, under_contract, under_application):
self.name = name
self.prices = prices
self.under_contract = under_contract
self.under_application = under_application
def is_valid(self):
return True
def to_tuple(self):
return (
self.name,
self.under_contract,
self.under_application
) + self.prices_tuple()
def prices_tuple(self):
if self.prices is not None:
return (min(self.prices), max(self.prices))
else:
return (None, None)
def column_names():
return (
'sale_type',
'under_contract',
'under_application',
'price_min',
'price_max'
)
def summarise(self):
return '%s $%s %s %s' % (
self.name, self.join_prices(self.prices),
str(self.under_contract),
str(self.under_application)
)
def join_prices(self, prices):
if prices is None:
return None
else:
strings = [str(x) for x in prices]
return ' and '.join(strings)
class PrivateTreaty(SaleType):
def __init__(self, price, under_contract):
super().__init__('Private Treaty', price, under_contract, None)
class OffPlan(SaleType):
def __init__(self, price, under_contract):
super().__init__('Off Plan', price, under_contract, None)
class Auction(SaleType):
def __init__(self, under_contract):
super().__init__('Auction', None, under_contract, None)
class Tender(SaleType):
def __init__(self, under_contract):
super().__init__('Tender', None, under_contract, None)
class Negotiation(SaleType):
def __init__(self, under_contract):
super().__init__('Negotiation', None, under_contract, None)
class ContactAgent(SaleType):
def __init__(self, under_contract):
super().__init__('Contact Agent', None, under_contract, None)
class SaleTypeParseFailed(SaleType):
def __init__(self):
super().__init__('Sale Type Parsing Failed', None, None, None)
def is_valid(self):
return False
def summarise(self):
return 'Sale Type parsing failed'
class UnableToFindSaleTypeText(SaleType):
def __init__(self):
super().__init__(
'Parsing Failed, unable to find sale type text',
None, None, None
)
def is_valid(self):
return False
def summarise(self):
return 'Unable to find Sale Type text'
class Rental(SaleType):
def __init__(self, price, under_application):
super().__init__('Rental', price, None, under_application)
class RentalNegotiation(SaleType):
def __init__(self, under_application):
super().__init__('Rental by Negotiation', None, None,
under_application)
class RentalUnderApplication(SaleType):
def __init__(self):
super().__init__('Rental Under Application', None, None, True)
class RentalTypeParseFailed(SaleType):
def __init__(self, sale_text):
self.sale_text = sale_text
super().__init__('Rental Type Parsing Failed', None, None, None)
def is_valid(self):
return False
def summarise(self):
return 'Rental Type parsing failed: %s' % self.sale_text
class PropertyType(ObjectWithDictEquality):
def __init__(self, name):
self.name = name
def is_valid(self):
return True
def to_tuple(self):
return (self.name,)
def column_names():
return ('property_type',)
class House(PropertyType):
def __init__(self):
super().__init__('House')
class TownHouse(PropertyType):
def __init__(self):
super().__init__('Town House')
class Unit(PropertyType):
def __init__(self):
super().__init__('Unit')
class ServicedApartment(PropertyType):
def __init__(self):
super().__init__('Serviced Apartment')
class UnitBlock(PropertyType):
def __init__(self):
super().__init__('UnitBlock')
class Studio(PropertyType):
def __init__(self):
super().__init__('Studio')
class Land(PropertyType):
def __init__(self):
super().__init__('Land')
class SemiRural(PropertyType):
def __init__(self):
super().__init__('Semi Rural')
class Duplex(PropertyType):
def __init__(self):
super().__init__('Duplex')
class RetirementLiving(PropertyType):
def __init__(self):
super().__init__('Retirement Living')
class Rural(PropertyType):
def __init__(self):
super().__init__('Rural')
class NotSpecified(PropertyType):
def __init__(self, ):
super().__init__('Not Specified')
class PropertyTypeNotSupported(PropertyType):
def __init__(self, property_type_text, soup_with_href):
self.property_type_text = property_type_text
self.soup_with_href = soup_with_href
super().__init__('Not Specified')
def is_valid(self):
return False
def summarise(self):
return ('Property type not supported, %s, %s' %
(self.property_type_text, self.soup_with_href)
)