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+--- Thread: add object and name in list (/thread-38782.html)
add object and name in list - 3lnyn0 - Nov-23-2022
Hi! How can I add in both list (in first fname and in second the person object) every time when I creat a Person?
Secondary how can I add in a list online students?
Thanks!
class Person:
name_persons = []
object_persons = []
def __init__(self, fname, lname, cnp, age):
self.fname = fname
self.lname = lname
self.cnp = cnp
self.age = age
@staticmethod
def add_person(self, fname):
self.name_persons.append(fname)
def gender(self):
if str(self.cnp)[0] == 1:
return "m"
return 'f'
class Student(Person):
def __init__(self, nume, prenume, cnp, varsta, medie):
super().__init__(nume, prenume, cnp, varsta)
self.medie = medi
RE: add object and name in list - deanhystad - Nov-24-2022
In the __init__()
self.persons.append(self)This saves the Person object which has the name as an attribute. No need for two lists. Actually far better than two lists.
Drop the add_person method. gender will always return 'f'.
RE: add object and name in list - 3lnyn0 - Nov-24-2022
It works. I would never have thought of that! Thanks!
RE: add object and name in list - 3lnyn0 - Nov-24-2022
I'm back with another problem, now I add a person to the list, but if I run the program again, it deletes that person and adds the newly added person. How do I keep the previously added person, should that list be outside the class?
RE: add object and name in list - buran - Nov-24-2022
Check Data Persistence
and
Saving an Object (Data persistence)
Of course, you can also store all necessary information e.g. as regular txt/csv or JSON, etc. format and recreate the objects, e.g. https://stackoverflow.com/a/33245595/4046632