Python creating objects

Question

I m trying to learn python and I now I am trying to get the hang of classes and how to manipulate them with instances   I can t seem to understand this practice problem   Create and return a student object whose name  age  and major are the same as those given as input  def make student name  age  major    I just don t get what it means by object  do they mean I should create an array inside the function that holds these values  or create a class and let this function be inside it  and assign instances   before this question i was asked to set up a student class with name  age  and major inside   class Student      name    Unknown name      age   0     major    Unknown major

User · Answer

when you create an object using predefine class, at first you want to create a variable for storing that object. Then you can create object and store variable that you created.

class Student:
     def __init__(self):

# creating an object....

   student1=Student()

Actually this init method is the constructor of class.you can initialize that method using some attributes.. In that point , when you creating an object , you will have to pass some values for particular attributes..

class Student:
      def __init__(self,name,age):
            self.name=value
            self.age=value

 # creating an object.......

     student2=Student("smith",25)

User · Answer

Create a class and give it an   init   method   class Student      def   init   self  name  age  major           self name   name         self age   age         self major   major      def is old self           return self age  gt  100   Now  you can initialize an instance of the Student class    gt  gt  gt  s   Student  John   88  None   gt  gt  gt  s name      John   gt  gt  gt  s age     88   Although I m not sure why you need a make student student function if it does the same thing as Student   init

User · Answer

Objects are instances of classes   Classes are just the blueprints for objects   So given your class definition -    Note the added  object  - this is the preferred way of creating new classes class Student object       name    Unknown name      age   0     major    Unknown major    You can create a make student function by explicitly assigning the attributes to a new instance of Student -  def make student name  age  major       student   Student       student name   name     student age   age     student major   major     return student   But it probably makes more sense to do this in a constructor    init    -  class Student object       def   init   self  name  Unknown name   age 0  major  Unknown major            self name   name         self age   age         self major   major   The constructor is called when you use Student     It will take the arguments defined in the   init   method   The constructor signature would now essentially be Student name  age  major    If you use that  then a make student function is trivial  and superfluous  -  def make student name  age  major       return Student name  age  major    For fun  here is an example of how to create a make student function without defining a class   Please do not try this at home   def make student name  age  major       return type  Student    object                      name   name   age   age   major   major

User · Answer

class Student object       name          age   0     major             The class  constructor  - It s actually an initializer      def   init   self  name  age  major           self name   name         self age   age         self major   major  def make student name  age  major       student   Student name  age  major      return student   Note that even though one of the principles in Python s philosophy is  there should be one   and preferably only one   obvious way to do it   there are still multiple ways to do this  You can also use the two following snippets of code to take advantage of Python s dynamic capabilities   class Student object       name          age   0     major       def make student name  age  major       student   Student       student name   name     student age   age     student major   major       Note  I didn t need to create a variable in the class definition before doing this      student gpa   float 4 0      return student   I prefer the former  but there are instances where the latter can be useful     one being when working with document databases like MongoDB

[python] Python, creating objects

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