8000 2024/03/19 - Adding Demo python files · rphadtare/python_by_examples@99e95ac · GitHub
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rphadtarerphadtare
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2024/03/19 - Adding Demo python files
1 parent dfcb932 commit 99e95ac

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+351
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lines changed

‎concepts/PythonDemo01_Variables.py

Lines changed: 4 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -51,6 +51,7 @@ def _inside_func() -> None:
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b = a
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print("ID of a ", id(a))
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print("ID of b ", id(b))
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a = 100
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print("ID of a after assigning new value ", id(a))
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b = 100
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print("after assigning new value ")
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print("ID of a ", id(a))
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print("ID of b ", id(b))

‎concepts/PythonDemo04_Functions.py

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# This file gives demo about functions
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def function_with_arg(arg1, arg2="Pooja"):
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print("Value of arg1 ", arg1)
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print("Value of arg2 ", arg2)
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print("*" * 25)
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print("Calling function_with_arg with one parameter")
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function_with_arg("Rohit")
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print("Calling function_with_arg with two parameter values")
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function_with_arg("Rohit", "Phadtare")
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# calling function with arguments name
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print("Calling function_with_arg with argument name")
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function_with_arg(arg2="Rohit", arg1="Phadtare")
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def function_var_arg_demo(*args):
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print("Inside function_var_arg_demo...")
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cnt = 1
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for i in args:
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print("param{} value is {} ".format(cnt, i))
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cnt += 1
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print("*" * 25)
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function_var_arg_demo("Rohit", "Prakash", "Phadtare")
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def function_var_karg_demo(**kargs_list):
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print("Inside function_var_karg_demo...")
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cnt = 1
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for param_name, param_value in kargs_list.items():
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print("{} value is {} ".format(param_name, param_value))
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cnt += 1
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print("*" * 25)
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function_var_karg_demo(first_name="Rohit", middle_name="Prakash", last_name="Phadtare")
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def lambda_func_demo(input_list):
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print("Inside lambda_func_demo .. ")
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print("Given list : ", input_list)
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list_even_num = list(filter(lambda n: (n % 2 == 0), input_list))
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print("Filtered list with even values : ", list_even_num)
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print("*" * 25)
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lambda_func_demo(range(10, 21))

‎concepts/PythonDemo05_Arrays.py

Lines changed: 43 additions & 0 deletions
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# This file gives demo about array
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from array import *
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# creating array of integers and empty array of float
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i_arr = array('i', [10, 20, 30])
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f_arr = array('f')
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# Traverse array
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for i in range(len(i_arr)):
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print("arr[", i, "]", " - ", i_arr[i])
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# insert elements using append and insert method
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f_arr.append(11) # no need of index in append method as it will append at end position
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print("11 is appeneded in f_arr")
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f_arr.insert(0, 22) # insert will need index to insert value at that position and adjust old values post insertion
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print("22 is inserted in f_arr at 0 index")
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f_arr.insert(5, 33) # if index is not present then it will add at current last_index + 1 position
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print("33 is inserted in f_arr at 5 index")
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# update element at last position in arr1
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print("f_arr - ", f_arr)
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f_arr[-1] = 55
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print("Post update of element at last position f_arr is - ", f_arr)
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# delete element from array
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print("Deleting element from i_arr - ", i_arr[0])
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del i_arr[0]
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print("i_arr post deletion - ", i_arr)
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# search element in array
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ele = input("enter number to search")
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cnt = 0
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for i in range(len(i_arr)):
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if i_arr[i] == int(ele):
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print("Number {} found at {} position in i_arr".format(ele, i))
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cnt += 1
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if cnt == 0:
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print("number {} is not present in i_arr ".format(ele))
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# using in operator
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print("Number {} is present in i_arr : ".format(ele), int(ele) in i_arr)

‎concepts/PythonDemo06_ClassAndObjectDemo.py

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# This file gives demo about class and object
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# Class Person
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class Person:
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def __init__(self, pid, name=None, age=None, gender=None):
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"""constructor for person class"""
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self.pid = pid
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self.name = name
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self.age = age
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self._gender = gender
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def display_person_details(self):
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print("Person details are -")
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print("ID: ", self.pid, " Name: ", self.name, " Age : ",
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self.age, " Gender : ", self._gender)
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print("*" * 100)
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# Creating Object
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p1 = Person(1, "Rohit Phadtare", 31, 'M')
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p2 = Person(2)
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p1.display_person_details()
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p2.display_person_details()
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class Shape:
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def __init__(self, name_of_shape):
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self._name = name_of_shape
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def __str__(self):
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return "Shape is " + self._name
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my_shape = Shape("Circle")
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print(my_shape)
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for _ in range(100):
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print(_)

‎concepts/PythonDemo07_Inheritance_Multilevel.py

Lines changed: 30 additions & 0 deletions
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# This file gives demo about multilevel inheritance
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class Animal:
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animal_id = 0
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def __init__(self, name, id):
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print("This is animal...")
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self.__name = name
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self.animal_id = id
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def speak(self):
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print("Animal {} with id {} speaks ..."
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.format(self.__name, self.animal_id))
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class Dog(Animal):
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def __init__(self, name, id_):
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super().__init__("Dog", id_)
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print("This is Dog..")
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self.__name = name
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def speak(self):
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print("Dog with name '{}' and with id {} barks ..."
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.format(self.__name, self.animal_id))
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d = Dog("Tobo", 1)
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d.speak()
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print(d.__dict__)

‎concepts/PythonDemo08_Inheritance_Multiple.py

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Original file line numberDiff line numberDiff line change
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# This file gives demo about multilevel inheritance
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class Company:
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def __init__(self):
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print("This is Company ..")
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def show(self):
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print("We manufactures vehicles ..")
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class BikeCompany(Company):
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def __init__(self):
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super().__init__()
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print("This is BikeCompany ..")
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def show(self):
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super().show()
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print("We manufactures bikes ..")
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class CarCompany(Company):
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def __init__(self):
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super().__init__()
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print("This is CarCompany ..")
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def show(self):
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super().show()
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print("We manufactures cars ..")
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class BusCompany(Company):
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def __init__(self):
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super().__init__()
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print("This is BusCompany ..")
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def show(self):
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super().show()
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print("We manufactures buses ..")
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class Honda(BusCompany, CarCompany, BikeCompany):
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def __init__(self):
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super().__init__()
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print("This is Honda company ..")
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def show(self):
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super().show()
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print("We are Honda company")
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h1 = Honda()
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h1.show()
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print(h1.__class__.__mro__)
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‎concepts/PythonDemo09_Polymorphism.py

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Original file line numberDiff line numberDiff line change
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class Person:
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def __init__(self, name_="", id_=0):
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self.name = name_
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self.id = id_
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def __str__(self):
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return "Person [ name = {} , id = {} ]".format(self.name, self.id)
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def show(self):
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print(self)
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print("*"*50)
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class Student(Person):
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def __init__(self, name_="", id_=0, std_=""):
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super().__init__(name_, id_)
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self.std = std_
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def __str__(self):
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return "Student [ name = {} , id = {}, std = {} ]".format(self.name, self.id, self.std)
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def show(self):
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print(self)
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print("*"*50)
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class Employee(Person):
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def __init__(self, name_="", id_=0, salary=0):
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super().__init__(name_, id_)
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self.salary = salary
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def __str__(self):
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return "Employee [ name = {} , id = {}, salary = {} ]".format(self.name, self.id, self.salary)
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def show(self):
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print(self)
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print("*"*50)
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p = Person("Rohit", 1)
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s = Student("Rohit", 1, "12th")
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e = Employee("Rohit", 1, 2000)
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for x in (p, s, e):
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x.show()
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‎concepts/PythonDemo10_Abstraction.py

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# This file gives demo about abstraction
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from abc import ABC
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class Shape(ABC):
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def draw(self):
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pass
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def show(self, shape_name=''):
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print("This is {} shape".format(shape_name))
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class TriangleShape(Shape):
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def __init__(self, shape_name="Triangle"):
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self.shapeName = shape_name
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def draw(self, a=0, b=0, c=0):
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print("Triagle[side1={}, side2={}, side3={}]".format(a, b, c))
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print("*"*50)
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class RectangleShape(Shape):
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def __init__(self, shape_name="Rectangle"):
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self.shapeName = shape_name
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def draw(self, length=0, breadth=0):
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print("Rectangle[length={}, breadth={}".format(length, breadth))
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print("*"*50)
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s1 = TriangleShape()
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s2 = RectangleShape()
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for s in [s1, s2]:
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s.show(s.shapeName)
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if isinstance(s, TriangleShape):
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s.draw(10, 20, 30)
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else:
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s.draw(15, 25)
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‎concepts/Sample.py

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class BaseClass:
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def call_me(self):
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print("Base Class Method")
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class LeftSubclass(BaseClass):
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def call_me(self):
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super().call_me()
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print("Left Subclass Method")
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class RightSubclass(BaseClass):
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def call_me(self):
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super().call_me()
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print("Right Subclass Method")
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class Subclass(LeftSubclass, RightSubclass):
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def call_me(self):
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super().call_me()
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print("Subclass Method")
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subClass = Subclass()
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print(subClass.__class__.__mro__)
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subClass.call_me()

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