def three(self):
"""
"""
if self.id % 2 == 0:
offer = self.offer
if offer.status == 'rejected':
test = self.money - self['money']
assert is_zero(test), test
self.tests['rejected'] = True
elif offer.status == 'accepted':
if offer.final_quantity == offer.quantity:
assert self.money - offer.quantity * \
offer.price == self['money']
assert self['cookies'] == offer.quantity
self.tests['accepted'] = True
else:
test = (self.money - offer.final_quantity *
offer.price) - self['money']
assert is_zero(test), test
test = self['cookies'] - offer.final_quantity
assert is_zero(test), test
self.tests['partial'] = True
else:
SystemExit('Error in buy')
def three(self):
"""
"""
if self.id % 2 == 0:
offer = self.offer
if offer.status == 'rejected':
test = self.money - self.possession('money')
assert is_zero(test), test
self.tests['rejected'] = True
elif offer.status == 'accepted':
if offer.final_quantity == offer.quantity:
assert self.money - offer.quantity * \
offer.price == self.possession('money')
assert self.possession('cookies') == offer.quantity
self.tests['accepted'] = True
else:
test = (self.money - offer.final_quantity *
offer.price) - self.possession('money')
assert is_zero(test), test
test = self.possession('cookies') - offer.final_quantity
assert is_zero(test), test
self.tests['partial'] = True
else:
SystemExit('Error in buy')
def consumption(self):
if self.id == 0:
self.create('a', 10)
self.create('b', 10)
self.create('c', 10)
utility = self.consume(self.utility_function, {'a': 5, 'b': 3, 'c': 1})
assert utility == max(5 ** 0.2, 3 ** 0.5 * 1 ** 0.3), utility
assert self['a'] == 5
assert self['b'] == 9.7
assert self['c'] == 10
self.destroy('a')
self.destroy('b')
self.destroy('c')
elif self.id == 1:
self.create('a', 10)
self.create('b', 10)
self.create('c', 10)
utility = self.consume(self.utility_function, {'a': 5, 'b': 3, 'c': 1})
assert utility == 5 ** 0.2 * 3 ** 0.5 * 1 ** 0.3, utility
assert self['a'] == 5
assert self['b'] == 7
assert self['c'] == 9
self.consume(self.utility_function, ['a', 'b', 'c'])
assert self['a'] == 0
assert self['b'] == 0
assert self['c'] == 0
pu = self.utility_function(**{'a': 5, 'b': 300, 'c': 10})
assert pu == 5 ** 0.2 * 300 ** 0.5 * 10 ** 0.3
elif self.id == 2:
self.create('a', 10)
self.create('b', 10)
self.create('c', 10)
utility = self.consume(self.utility_function, ['a', 'b', 'c'])
assert is_zero(utility - max(10 ** 0.2, 10 ** 0.5 * 10 ** 0.3)
), (utility, max(10 ** 0.2, 10 ** 0.5 * 10 ** 0.3))
assert self['a'] == 0
assert self['b'] == 9
assert self['c'] == 10
self.destroy('a')
self.destroy('b')
self.destroy('c')
elif self.id == 3:
self.create('a', 10)
self.create('b', 10)
self.create('c', 10)
utility = self.consume(self.utility_function, ['a', 'b', 'c'])
assert is_zero(utility - 10 ** 0.2 * 10 ** 0.5 * 10 **
0.3), (utility, 10 ** 0.2 * 10 ** 0.5 * 10 ** 0.3)
assert self['a'] == 0
assert self['b'] == 0
assert self['c'] == 0
pu = self.utility_function(**{'a': 5, 'b': 300, 'c': 10})
assert pu == 5 ** 0.2 * 300 ** 0.5 * 10 ** 0.3
def consumption(self):
if self.id == 0:
self.create('a', 10)
self.create('b', 10)
self.create('c', 10)
utility = self.consume(self.utility_function, {'a': 5, 'b': 3, 'c': 1})
assert utility == max(5 ** 0.2, 3 ** 0.5 * 1 ** 0.3), utility
assert self['a'] == 5
assert self['b'] == 9.7
assert self['c'] == 10
self.destroy('a')
self.destroy('b')
self.destroy('c')
elif self.id == 1:
self.create('a', 10)
self.create('b', 10)
self.create('c', 10)
utility = self.consume(self.utility_function, {'a': 5, 'b': 3, 'c': 1})
assert utility == 5 ** 0.2 * 3 ** 0.5 * 1 ** 0.3, utility
assert self['a'] == 5
assert self['b'] == 7
assert self['c'] == 9
self.consume(self.utility_function, ['a', 'b', 'c'])
assert self['a'] == 0
assert self['b'] == 0
assert self['c'] == 0
pu = self.utility_function(**{'a': 5, 'b': 300, 'c': 10})
assert pu == 5 ** 0.2 * 300 ** 0.5 * 10 ** 0.3
elif self.id == 2:
self.create('a', 10)
self.create('b', 10)
self.create('c', 10)
utility = self.consume(self.utility_function, ['a', 'b', 'c'])
assert is_zero(utility - max(10 ** 0.2, 10 ** 0.5 * 10 ** 0.3)
), (utility, max(10 ** 0.2, 10 ** 0.5 * 10 ** 0.3))
assert self['a'] == 0
assert self['b'] == 9
assert self['c'] == 10
self.destroy('a')
self.destroy('b')
self.destroy('c')
elif self.id == 3:
self.create('a', 10)
self.create('b', 10)
self.create('c', 10)
utility = self.consume(self.utility_function, ['a', 'b', 'c'])
assert is_zero(utility - 10 ** 0.2 * 10 ** 0.5 * 10 **
0.3), (utility, 10 ** 0.2 * 10 ** 0.5 * 10 ** 0.3)
assert self['a'] == 0
assert self['b'] == 0
assert self['c'] == 0
pu = self.utility_function(**{'a': 5, 'b': 300, 'c': 10})
assert pu == 5 ** 0.2 * 300 ** 0.5 * 10 ** 0.3
def compute_triangular_form(self):
"""
>>> s = LinearSystem(Plane(Vector(1, 1, 1), 1),
... Plane(Vector(0, 1, 1), 2))
>>> t = s.compute_triangular_form()
>>> t[0], t[1]
(Plane(Vector(1, 1, 1), 1), Plane(Vector(0, 1, 1), 2))
>>> s = LinearSystem(Plane(Vector(1, 1, 1), 1),
... Plane(Vector(1, 1, 1), 2))
>>> t = s.compute_triangular_form()
>>> t[0], t[1]
(Plane(Vector(1, 1, 1), 1), Plane(Vector(0, 0, 0), 1))
>>> s = LinearSystem(Plane(Vector(1, 1, 1), 1),
... Plane(Vector(0, 1, 0), 2),
... Plane(Vector(1, 1, -1), 3),
... Plane(Vector(1, 0, -2), 2))
>>> t = s.compute_triangular_form()
>>> t[0], t[1]
(Plane(Vector(1, 1, 1), 1), Plane(Vector(0, 1, 0), 2))
>>> t[2], t[3]
(Plane(Vector(0, 0, -2), 2), Plane(Vector(0, 0, 0), 0))
>>> s = LinearSystem(Plane(Vector(0, 1, 1), 1),
... Plane(Vector(1, -1, 1), 2),
... Plane(Vector(1, 2, -5), 3))
>>> t = s.compute_triangular_form()
>>> t[0]
Plane(Vector(1, -1, 1), 2)
>>> t[1]
Plane(Vector(0, 1, 1), 1)
>>> t[2]
Plane(Vector(0, 0, -9), -2)
"""
system = deepcopy(self)
equations = len(system)
cycles = min([system.dimension, equations])
for i in range(cycles):
if is_zero(system[i].normal_vector[i]):
for j in range(i + 1, equations):
if not is_zero(system[j].normal_vector[i]):
system.swap_rows(i, j)
break
else:
continue
for j in range(i + 1, equations):
k = -system[j].normal_vector[i] / system[i].normal_vector[i]
system.add_multiple_times_row_to_row(k, i, j)
return system
def two(self):
""" Acts only if he is agent 1: recieves quotes and accepts;
rejects; partially accepts and leaves quotes unanswerd.
"""
if self.id == 1:
self.create('cookies', random.uniform(0, 10000))
cookies = self['cookies']
if random.randint(0, 1) == 0:
quotes = self.get_quotes('cookies')
else:
quotes = self.get_quotes_all()
quotes = quotes['cookies']
assert quotes
for quote in quotes:
if random.randint(0, 1) == 0:
self.tests['not_answered'] = True
continue
if self['cookies'] >= quote['quantity']:
self.accept_quote(quote)
self.final_money = quote['price'] * quote['quantity']
assert self['cookies'] == cookies - quote['quantity']
self.tests['accepted'] = True
else:
self.accept_quote_partial(quote, self['cookies'])
assert is_zero(self['cookies'])
self.final_money = cookies * quote['price']
self.tests['partial'] = True
def two(self):
""" Acts only if he is agent 1: recieves quotes and accepts;
rejects; partially accepts and leaves quotes unanswerd.
"""
if self.id == 1:
self.create('cookies', random.uniform(0, 10000))
cookies = self['cookies']
if random.randint(0, 1) == 0:
quotes = self.get_quotes('cookies')
else:
quotes = self.get_quotes_all()
quotes = quotes['cookies']
assert quotes
for quote in quotes:
if random.randint(0, 1) == 0:
self.tests['not_answered'] = True
continue
if self['cookies'] >= quote['quantity']:
self.accept_quote(quote)
self.final_money = quote['price'] * quote['quantity']
assert self['cookies'] == cookies - quote['quantity']
self.tests['accepted'] = True
else:
self.accept_quote_partial(
quote, self['cookies'])
assert is_zero(self['cookies'])
self.final_money = cookies * quote['price']
self.tests['partial'] = True
def two(self):
""" Acts only if he is agent 1: recieves offers and accepts;
rejects; partially accepts and leaves offers unanswerd.
"""
if self.id % 2 == 1:
self.create('cookies', random.uniform(0, 10000))
cookies = self.possession('cookies')
oo = self.get_offers('cookies')
assert oo
for offer in oo:
if random.randint(0, 10) == 0:
self.tests['not_answered'] = True
continue
elif random.randint(0, 10) == 0:
self.reject(offer)
assert self.possession('money') == 0
assert self.possession('cookies') == cookies
self.tests['rejected'] = True
break # tests the automatic clean-up of polled offers
try:
self.accept(offer)
assert self.possession(
'money') == offer.price * offer.quantity
assert self.possession(
'cookies') == cookies - offer.quantity
self.tests['accepted'] = True
except NotEnoughGoods:
self.accept(offer, self.possession('cookies'))
assert is_zero(self.possession('cookies'))
assert self.possession('money') == cookies * offer.price
self.tests['partial'] = True
def two(self):
""" Acts only if he is agent 1: recieves offers and accepts;
rejects; partially accepts and leaves offers unanswerd.
"""
if self.id % 2 == 1:
self.create('cookies', random.uniform(0, 10000))
cookies = self.possession('cookies')
oo = self.get_offers('cookies')
assert oo
for offer in oo:
if random.randint(0, 10) == 0:
self.tests['not_answered'] = True
continue
elif random.randint(0, 10) == 0:
self.reject(offer)
assert self.possession('money') == 0
assert self.possession('cookies') == cookies
self.tests['rejected'] = True
break # tests the automatic clean-up of polled offers
try:
self.accept(offer)
assert self.possession('money') == offer.price * offer.quantity
assert self.possession('cookies') == cookies - offer.quantity
self.tests['accepted'] = True
except NotEnoughGoods:
self.accept(offer, self.possession('cookies'))
assert is_zero(self.possession('cookies'))
assert self.possession('money') == cookies * offer.price
self.tests['partial'] = True
def three(self):
if self.id % 2 == 0:
offer = self.offer
if offer.status == 'rejected':
assert is_zero(self.cookies - self['cookies'])
self.tests['rejected'] = True
elif offer.status == 'accepted':
if offer.final_quantity == offer.quantity:
assert self.cookies - \
offer.quantity == self['cookies']
assert self['money'] == offer.quantity * offer.price
self.tests['accepted'] = True
else:
test = (self.cookies - offer.final_quantity) - \
self['cookies']
assert is_zero(test), test
test = self['money'] - \
offer.final_quantity * offer.price
assert is_zero(test), test
self.tests['partial'] = True
self.tests['full_partial'] = True
else:
SystemExit('Error in sell')
def solve(self):
system = self.compute_rref()
answer = [0] * system.dimension
useful_equations = []
for i, plane in enumerate(system):
j = first_nonzero_index(plane.normal_vector)
if j is None:
if not is_zero(plane.constant_term):
return None
continue
useful_equations.append(plane)
answer[j] = plane.constant_term
if len(useful_equations) < self.dimension:
return self.build_parametrization(useful_equations)
return Vector(*answer)
def __eq__(self, other: 'Line') -> bool:
"""
>>> Line(Vector(2, 3), 5) == Line(Vector(4, 6), 10)
True
>>> Line(Vector(2, 3), 5) == Line(Vector(4, 5), 10)
False
"""
if not self.normal_vector:
if other.normal_vector:
return False
else:
diff = self.constant_term - other.constant_term
return is_zero(diff)
elif not other.normal_vector:
return False
if not self.is_parallel(other):
return False
middle_vector = self.base_point - other.base_point
return self.normal_vector.is_orthogonal(middle_vector)
def production(self):
self.create('a', 2)
self.create('b', 2)
self.produce(self.pf, {'a': 1, 'b': 2})
assert self['a'] == 1, self['a']
assert self['b'] == 1.8, self['b']
assert is_zero(self['consumption_good'] - 1. ** 0.5 * 2), \
self['consumption_good']
self.destroy('a')
self.destroy('b')
self.destroy('consumption_good')
result = self.pf(**{'a': 10, 'b': 10})
assert result['consumption_good'] == max(10**2, 10**0.5 * 10)
assert result['a'] == 0, result['a']
assert result['b'] == 9, result['b']
self.create('a', 2)
self.create('b', 2)
self.produce(self.cd, {'a': 1, 'b': 2})
assert self['a'] == 1, self['a']
assert self['b'] == 0, self['b']
assert self['consumption_good'] == 5 * \
1 ** 2 * 2 ** 1, self['consumption_good']
self.destroy('a')
self.destroy('b')
self.destroy('consumption_good')
self.create('a', 2)
self.create('b', 2)
self.produce(self.leontief, {'a': 1, 'b': 2})
assert self['a'] == 1, self['a']
assert self['b'] == 0, self['b']
assert self['consumption_good'] == min(1 * 3,
2 * 1), self['consumption_good']
self.destroy('a')
self.destroy('consumption_good')
self.create('a', 10)
self.create('b', 10)
self.create('c', 10)
self.produce(self.many_goods_pf, {'a': 1, 'b': 2, 'c': 5})
assert self['a'] == 9, self['a']
assert self['b'] == 9.8, self['b']
assert self['c'] == 10, self['c']
assert self['soft_rubber'] == 1 ** 0.25 * \
2 ** 0.5 * 5 ** 0.25, self['soft_rubber']
assert self['hard_rubber'] == 1 ** 0.1 * \
2 ** 0.2 * 5 ** 0.01, self['hard_rubber']
assert self['waste'] == 2 / 2, self['waste']
self.destroy('a')
self.destroy('b')
self.destroy('c')
self.destroy('soft_rubber')
self.destroy('hard_rubber')
self.destroy('waste')
self.create('a', 2)
self.create('b', 2)
self.create('c', 4)
self.produce(self.ces, {'a': 1, 'b': 2, 'c': 4})
assert self['a'] == 1, self['a']
assert self['b'] == 0, self['b']
assert self['c'] == 0, self['c']
expected = (0.25 * 1**0.5 + 0.25 * 2**0.5 + 0.5 * 4**0.5)**(1 / 0.5)
assert self['consumption_good'] == expected, (self['consumption_good'],
expected)
self.destroy('a', 1)
self.destroy('consumption_good', expected)
self.create('a', 2)
self.create('b', 2)
self.create('c', 2)
self.create('d', 2)
self.create('e', 2)
self.produce(self.ces_flexible, {
'a': 1,
'b': 2,
'c': 2,
'd': 2,
'e': 2
})
assert self['a'] == 1, self['a']
assert self['b'] == 0, self['b']
assert self['c'] == 0, self['c']
assert self['d'] == 0, self['d']
assert self['e'] == 0, self['e']
expected = (2 * (0.2 * 1**0.5 + 0.2 * 2**0.5 + 0.2 * 2**0.5 +
0.2 * 2**0.5 + 0.2 * 2**0.5)**(1 / 0.5))
assert is_zero(self['consumption_good'] -
expected), (self['consumption_good'], expected)
self.destroy('a', 1)
self.destroy('consumption_good', expected)
def production(self):
self.create('a', 2)
self.create('b', 2)
self.produce(self.pf, {'a': 1, 'b': 2})
assert self.possession('a') == 1, self.possession('a')
assert self.possession('b') == 1.8, self.possession('b')
assert is_zero(self.possession('consumption_good') - 1. ** 0.5 * 2), \
self.possession('consumption_good')
self.destroy('a')
self.destroy('b')
self.destroy('consumption_good')
output = self.predict_produce_output(self.pf, {'a': 10, 'b': 10})
assert output['consumption_good'] == max(10 ** 2, 10 ** 0.5 * 10)
input = self.predict_produce_input(self.pf, {'a': 10, 'b': 10})
assert input['a'] == 10, input['a']
assert input['b'] == 1, input['b']
nv = self.net_value(
output, input, {'consumption_good': 10, 'a': 1, 'b': 2})
assert nv == 100 * 10 - (10 * 1 + 1 * 2), nv
self.create('a', 2)
self.create('b', 2)
self.produce(self.cd, {'a': 1, 'b': 2})
assert self.possession('a') == 1, self.possession('a')
assert self.possession('b') == 0, self.possession('b')
assert self.possession('consumption_good') == 5 * \
1 ** 2 * 2 ** 1, self.possession('consumption_good')
self.destroy('a')
self.destroy('b')
self.destroy('consumption_good')
self.create('a', 2)
self.create('b', 2)
self.produce(self.leontief, {'a': 1, 'b': 2})
assert self.possession('a') == 1, self.possession('a')
assert self.possession('b') == 0, self.possession('b')
assert self.possession('consumption_good') == min(
1 * 3, 2 * 1), self.possession('consumption_good')
self.destroy('a')
self.destroy('consumption_good')
self.create('a', 10)
self.create('b', 10)
self.create('c', 10)
self.produce(self.many_goods_pf, {'a': 1, 'b': 2, 'c': 5})
assert self.possession('a') == 9, self.possession('a')
assert self.possession('b') == 9.8, self.possession('b')
assert self.possession('c') == 10, self.possession('c')
assert self.possession('soft_rubber') == 1 ** 0.25 * \
2 ** 0.5 * 5 ** 0.25, self.possession('soft_rubber')
assert self.possession('hard_rubber') == 1 ** 0.1 * \
2 ** 0.2 * 5 ** 0.01, self.possession('hard_rubber')
assert self.possession('waste') == 2 / 2, self.possession('waste')
self.destroy('a')
self.destroy('b')
self.destroy('c')
self.destroy('soft_rubber')
self.destroy('hard_rubber')
self.destroy('waste')
input_goods = {'wheels': 4, 'chassi': 1}
price_vector = {'wheels': 10, 'chassi': 100, 'car': 1000}
nv = self.predict_net_value(self.car, input_goods, price_vector)
assert nv == 860
self.create('a', 2)
self.create('b', 2)
self.create('c', 4)
self.produce(self.ces, {'a': 1, 'b': 2, 'c': 4})
assert self.possession('a') == 1, self.possession('a')
assert self.possession('b') == 0, self.possession('b')
assert self.possession('c') == 0, self.possession('c')
expected = (0.25 * 1 ** 0.5 + 0.25 * 2 **
0.5 + 0.5 * 4 ** 0.5) ** (1 / 0.5)
assert self.possession('consumption_good') == expected, (
self.possession('consumption_good'), expected)
self.destroy('a', 1)
self.destroy('consumption_good', expected)
self.create('a', 2)
self.create('b', 2)
self.create('c', 2)
self.create('d', 2)
self.create('e', 2)
self.produce(self.ces_flexible, {
'a': 1, 'b': 2, 'c': 2, 'd': 2, 'e': 2})
assert self.possession('a') == 1, self.possession('a')
assert self.possession('b') == 0, self.possession('b')
assert self.possession('c') == 0, self.possession('c')
assert self.possession('d') == 0, self.possession('d')
assert self.possession('e') == 0, self.possession('e')
expected = (2 * (0.2 * 1 ** 0.5 + 0.2 * 2 ** 0.5 + 0.2 *
2 ** 0.5 + 0.2 * 2 ** 0.5 + 0.2 * 2 ** 0.5) **
(1 / 0.5))
assert is_zero(self.possession('consumption_good') - expected), (
self.possession('consumption_good'), expected)
self.destroy('a', 1)
self.destroy('consumption_good', expected)
def production(self):
if self.id == 0:
self.create('a', 2)
self.create('b', 2)
self.produce({'a': 1, 'b': 2})
assert self.possession('a') == 1, self.possession('a')
assert self.possession('b') == 1.8, self.possession('b')
assert self.possession(
'consumption_good') == 1**0.5 * 2, self.possession(
'consumption_good')
self.destroy('a', 1)
self.destroy('b', 1.8)
self.destroy('consumption_good', 1**0.5 * 2)
output = self.predict_produce_output({'a': 10, 'b': 10})
assert output['consumption_good'] == max(10**2, 10**0.5 * 10)
input = self.predict_produce_input({'a': 10, 'b': 10})
assert input['a'] == 10, input['a']
assert input['b'] == 1, input['b']
nv = self.net_value(output, input, {
'consumption_good': 10,
'a': 1,
'b': 2
})
assert nv == 100 * 10 - (10 * 1 + 1 * 2), nv
elif self.id == 1:
self.create('a', 2)
self.create('b', 2)
self.produce({'a': 1, 'b': 2})
assert self.possession('a') == 1, self.possession('a')
assert self.possession('b') == 0, self.possession('b')
assert self.possession('consumption_good') == 5 * \
1 ** 2 * 2 ** 1, self.possession('consumption_good')
self.destroy('a', 1)
self.destroy('consumption_good', 5 * 1**2 * 2**1)
elif self.id == 2:
self.create('a', 2)
self.create('b', 2)
self.produce({'a': 1, 'b': 2})
assert self.possession('a') == 1, self.possession('a')
assert self.possession('b') == 0, self.possession('b')
assert self.possession('consumption_good') == min(
1 * 3, 2 * 1), self.possession('consumption_good')
self.destroy('a', 1)
self.destroy('consumption_good', min(1 * 3, 2 * 1))
elif self.id == 3:
self.create('a', 10)
self.create('b', 10)
self.create('c', 10)
self.produce({'a': 1, 'b': 2, 'c': 5})
assert self.possession('a') == 9, self.possession('a')
assert self.possession('b') == 9.8, self.possession('b')
assert self.possession('c') == 10, self.possession('c')
assert self.possession('soft_rubber') == 1**0.25 * 2**0.5 * 5**0.25
assert self.possession('hard_rubber') == 1**0.1 * 2**0.2 * 5**0.01
assert self.possession('waste') == 2 / 2, self.possession('waste')
self.destroy('a')
self.destroy('b')
self.destroy('c')
self.destroy('soft_rubber')
self.destroy('hard_rubber')
self.destroy('waste')
elif self.id == 4:
input_goods = {'wheels': 4, 'chassi': 1}
price_vector = {'wheels': 10, 'chassi': 100, 'car': 1000}
nv = self.predict_net_value(input_goods, price_vector)
assert nv == 860
elif self.id == 5:
self.create('a', 2)
self.create('b', 2)
self.create('c', 4)
self.produce({'a': 1, 'b': 2, 'c': 4})
assert self.possession('a') == 1, self.possession('a')
assert self.possession('b') == 0, self.possession('b')
assert self.possession('c') == 0, self.possession('c')
expected = (0.25 * 1**0.5 + 0.25 * 2**0.5 + 0.5 * 4**0.5)**(1 /
0.5)
assert self.possession('consumption_good') == expected, (
self.possession('consumption_good'), expected)
self.destroy('a', 1)
self.destroy('consumption_good', expected)
elif self.id == 6:
self.create('a', 2)
self.create('b', 2)
self.create('c', 2)
self.create('d', 2)
self.create('e', 2)
self.produce({'a': 1, 'b': 2, 'c': 2, 'd': 2, 'e': 2})
assert self.possession('a') == 1, self.possession('a')
assert self.possession('b') == 0, self.possession('b')
assert self.possession('c') == 0, self.possession('c')
assert self.possession('d') == 0, self.possession('d')
assert self.possession('e') == 0, self.possession('e')
expected = 2 * (0.2 * 1**0.5 + 0.2 * 2**0.5 + 0.2 * 2**0.5 +
0.2 * 2**0.5 + 0.2 * 2**0.5)**(1 / 0.5)
assert is_zero(self.possession('consumption_good') -
expected), (self.possession('consumption_good'),
expected)
self.destroy('a', 1)
self.destroy('consumption_good', expected)
