How to fix my code?

Question

class Juice:
def __init__(self, name, capacity):
self.name = name
self.capacity = capacity

def __add__(self, other ):
self.name = self.name+"&"+other.name
self.capacity += other.capacity
return self.name,self.capacity

a = Juice('Orange', 1.5)
b = Juice('Apple', 2.0)

result = a + b
print(result)
It is the test from course Python core. And it should output:
Orange&Apple (3.5L)
but it output:
(“Orange&Apple”, 3,5)

Answer 1

class Juice:
def __init__(self, name, capacity):
self.name = name
self.capacity = capacity

def __str__(self):
return (self.name + ' ('+str(self.capacity)+'L)')

def __add__(self, other):
cap = self.capacity + other.capacity
capstr = " (" + str(cap) + "L" + ")"
return self.name + "&" + other.name + capstr

a = Juice('Orange', 1.5)
b = Juice('Apple', 2.0)

result = a + b
print(result)

As you can see, you have to make the sum of capacities an string and then add the string to the end of your output rather than returning name and capacity of the name in your add magic method.