- Read the guideline before start
You have a list of dicts people
, every dict means
a person, it has keys: name
, age
,
wife
/husband
- depends on person is male or
female. All names
are different. Key
wife
/husband
can be either None
or
name of another person.
-
Define a Class
Person
-
The
__init__
method should take two parametersname
: A string representing the name of the person.age
: An integer representing the age of the person.
-
Define a class attribute
people
in thePerson
class to store instances by theirname
.- The keys are the
name
values of instances. - The values are references to the
Person
instances themselves. - Within the
__init__
method, add each newPerson
instance to thepeople
dictionary.
- The keys are the
Write function create_person_list
, this function
takes list people
and return list with
Person
instances instead of dicts.
Note:
If person's key wife
/husband
is not
None
- create_person_list
should add
attribute wife
/husband
respectively
to its instance. This attribute should
be a link to a Person
instance with name
the
same as wife
/husband
key in person's dict.
Example:
people = [
{"name": "Ross", "age": 30, "wife": "Rachel"},
{"name": "Joey", "age": 29, "wife": None},
{"name": "Rachel", "age": 28, "husband": "Ross"}
]
person_list = create_person_list(people)
isinstance(person_list[0], Person) # True
person_list[0].name == "Ross"
person_list[0].wife is person_list[2] # True
person_list[0].wife.name == "Rachel"
person_list[1].name == "Joey"
person_list[1].wife
# AttributeError
isinstance(person_list[2], Person) # True
person_list[2].name == "Rachel"
person_list[2].husband is person_list[0] # True
# The same as person_list[0]
person_list[2].husband.name == "Ross"
person_list[2].husband.wife is person_list[2] # True
Person.people == {
"Ross": <__main__.Person object at 0x10c20ca60>,
"Joey": <__main__.Person object at 0x10c180a00>,
"Rachel": <__main__.Person object at 0x10c1804f0>
}
Hint
- use pytest
for testing