python create instance of class code example

Example 1: call instance class python

# define class
class example:
# define __call__ function
   def __call__(self):
       print("It worked!")
# create instance
g = example()
# when attempting to call instance of class it will call the __class method
g()
# prints It worked!

Example 2: python class

class Animal(object): # Doesn't need params but put it there anyways.
    def __init__(self, species, price):
        self.species = species # Sets species name
        self.price = price # Sets price of it
    
    def overview(self): # A function that uses the params of the __init__ function
        print(f"This species is called a {self.species} and the price for it is {self.price}")

class Fish(Animal): # Inherits from Animal
    pass # Don't need to add anything because it's inherited everything from Animal
 
salmon = Fish("Salmon", "$20") # Make a object from class Fish
salmon.overview() # Run a function with it
dog = Animal("Golden retriever", "$400") # Make a object from class Animal
dog.overview() # Run a function with it

Example 3: making an instance of a class in puython

#!/usr/bin/python

class Employee:
   'Common base class for all employees'
   empCount = 0

   def __init__(self, name, salary):
      self.name = name
      self.salary = salary
      Employee.empCount += 1
   
   def displayCount(self):
     print "Total Employee %d" % Employee.empCount

   def displayEmployee(self):
      print "Name : ", self.name,  ", Salary: ", self.salary

"This would create first object of Employee class"
emp1 = Employee("Zara", 2000)
"This would create second object of Employee class"
emp2 = Employee("Manni", 5000)
emp1.displayEmployee()
emp2.displayEmployee()
print "Total Employee %d" % Employee.empCount

Example 4: python instance Object

x.counter = 1
while x.counter < 10:
    x.counter = x.counter * 2
print(x.counter)
del x.counter


#https://docs.python.org/3.8/tutorial/classes.html#class-objects

Example 5: How to make a new class in python

#Use the class function and give the class a name
#next use the def __init__() to initilaize and give it some properties.
class Fruits():
  def __init__(self, name, colour, taste):
    self.name = name
    self.colour = colour
    self.taste = taste
#Now create an object by first calling the class
fruit1 = Fruits(apple, red, sweet)
print(fruit1.name)
#this will print the name which is apple
print(fruit1.colour)
#this will print the colour which is red
print(fruit1.taste)
#this will print the taste which is sweet