Merge pull request codebasics#92 from beladiyadarshan/exercise_16_26

Added : exercises for 16 to 26

.gitignore

@@ -3,4 +3,5 @@
 **/.idea/
 .ipynb_checkpoints/
 **/.ipynb_checkpoints/
-**/.cache/
+**/.cache/
+.vscode

Basics/Hindi/16_class_and_objects/16_class_and_object_exercise.md

@@ -0,0 +1,22 @@
+## Exercise: Class and Objects
+
+1. Create a sample class named Employee with two attributes id and name 
+
+```
+employee :
+    id
+    name
+```
+object initializes id and name dynamically for every Employee object created.
+
+```
+emp = Employee(1, "coder")
+```
+
+2. Use del property to first delete id attribute and then the entire object
+
+
+[Solution](https://github.com/codebasics/py/blob/master/Basics/python_basics/16_class_and_objects/16_class_and_objects.py)
+
+
+

Basics/Hindi/16_class_and_objects/16_class_and_objects.py

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+class Employee:
+
+    def __init__(self, id, name):
+        self.id = id
+        self.name = name
+
+    def display(self):
+        print(f"ID: {self.id} \nName: {self.name}")
+
+
+# Creating a emp instance of Employee class
+emp = Employee(1, "coder")
+
+emp.display()
+# Deleting the property of object
+del emp.id
+# Deleting the object itself
+try:
+    print(emp.id)
+except NameError:
+    print("emp.id is not defined")
+
+del emp
+try:
+    emp.display()  # it will gives error after deleting emp
+except NameError:
+    print("emp is not defined")

Basics/Hindi/17_inheritance/17_inheritance.md

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+## Exercise: Inheritance
+
+1. create inheritance using animal Dog relation.
+
+
+```
+for example, 
+    Animal and Dog both has same habitat so create a method for habitat 
+```
+
+2. use super() constructor for calling parent constructor.
+
+```
+class Animal:
+    #code
+
+class Dog(Animal):
+    super()-it refers Animal class,now you can call Animal's methods.
+```
+
+[Solution](https://github.com/codebasics/py/blob/master/Basics/python_basics/17_inheritance/17_inheritance.py)
+
+
+

Basics/Hindi/17_inheritance/17_inheritance.py

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+class Animal:
+    def __init__(self, habitat):
+        self.habitat = habitat
+
+    def print_habitat(self):
+        print(self.habitat)
+
+    def sound(self):
+        print("Some Animal Sound")
+
+
+class Dog(Animal):
+    def __init__(self):
+        super().__init__("Kennel")
+
+    def sound(self):
+        print("Woof woof!")
+
+
+x = Dog()
+x.print_habitat()
+x.sound()

Basics/Hindi/18_multiple_inheritance/18_multiple_inheritance.md

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+## Exercise: Multiple Inheritance
+
+Real Life Example :
+1. Create multiple inheritance on teacher,student and youtuber.
+
+
+```
+Q. if we have created teacher and now one student joins master degree with becoming teacher then what??
+
+Ans :  just make subclass from  teacher so that student will become teacher
+```
+
+2. Now student is teacher as well as youtuber then what???
+
+
+```
+-just use multiple inheritance for these three relations
+
+```
+
+
+
+[Solution](https://github.com/codebasics/py/blob/master/Basics/python_basics/18_multiple_inheritance/18_multiple_inheritance.py)
+
+
+

Basics/Hindi/18_multiple_inheritance/18_multiple_inheritance.py

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+class Teacher:
+    def teachers_action(self):
+        print("I can teach")
+
+
+class Engineer:
+    def Engineers_action(self):
+        print("I can code")
+
+
+class Youtuber:
+    def youtubers_action(self):
+        print("I can code and teach")
+
+
+class Person(Teacher, Engineer, Youtuber):
+    pass
+
+
+coder = Person()
+coder.teachers_action()
+coder.Engineers_action()
+coder.youtubers_action()

Basics/Hindi/19_raise_exception_finally/19_raise_exception_finally.md

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+## Exercise: Raise Exception And Finally
+
+1. Create a custom exception AdultException.
+
+2. Create a class Person with attributes name and age in it.
+
+3. Create a function get_minor_age() in the class. It throws an exception if the person is adult otherwise returns age.
+
+4. Create a function display_person() which prints the age and name of a person.
+```
+let us say,
+
+if age>18 
+    he is major
+else
+    raise exception
+
+create cusomException named ismajor and raise it if age<18.
+```
+
+
+
+[Solution](https://github.com/codebasics/py/blob/master/Basics/python_basics/19_raise_exception_finally/19_raise_exception_finally.py)
+
+
+

Basics/Hindi/19_raise_exception_finally/19_raise_exception_finally.py

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+# for making exception just make subclass of Exception
+class AdultException(Exception):
+    pass
+
+
+class Person:
+    def __init__(self, name, age):
+        self.name = name
+        self.age = age
+
+    def get_minor_age(self):
+        if int(self.age) >= 18:
+            raise AdultException
+        else:
+            return self.age
+
+    def display(self):
+        try:
+            print(f"age -> {self.get_minor_age()}")
+        except AdultException:
+            print("Person is an adult")
+        finally:
+            print(f"name -> {self.name}")
+
+
+# No exception
+Person("Bhavin", 17).display()
+
+# AdultException is raised
+Person("Dhaval", 23).display()

Basics/Hindi/20_Iterators/20_Iterators.md

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+## Exercise: Iterators
+
+1. Create an iterator for fibonacci series in such a way that each next returns the next element from fibonacci series.
+2. The iterator should stop when it reaches a `limit` defined in the constructor.
+
+
+
+[Solution](https://github.com/codebasics/py/blob/master/Basics/python_basics/20_Iterators/20_Iterators.py)

Basics/Hindi/20_Iterators/20_Iterators.py

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+class Fibonacci:
+    def __init__(self, limit):
+        # default constructor
+        self.previous = 0
+        self.current = 1
+        self.n = 1
+        self.limit = limit
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        if self.n < self.limit:
+            result = self.previous + self.current
+            self.previous = self.current
+            self.current = result
+            self.n += 1
+            return result
+        else:
+            raise StopIteration
+
+
+# init the fib_iterator
+fib_iterator = iter(Fibonacci(5))
+while True:
+    # print the value of next fibonacci up to 5th fibonacci
+    try:
+        print(next(fib_iterator))
+    except StopIteration:
+        break

Basics/Hindi/21_generators/21_generators.md

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+## Exercise: Generators
+
+1. Print Square Sequence using yield
+
+
+```
+    Create Generator method such that every time it will returns a next square number
+
+for exmaple : 1 4 9 16 ..
+
+     
+```
+
+
+
+[Solution](https://github.com/codebasics/py/blob/master/Basics/python_basics/21_genrators/21_genrators.py)

Basics/Hindi/21_generators/21_generators.py

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+def next_square():
+    i = 1
+    while True:
+        yield i * i
+        i += 1
+
+
+for n in next_square():
+    if n > 25:
+        break
+    print(n)

Basics/Hindi/22_list_set_dict_comprehension/22_list_set_dict_comprehension.md

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+## Exercise: Generators
+
+
+1. Create a Dictionary which contains the Binary values mapping with numbers found in the below integer and binary and save it in binary_dict. 
+
+Example :
+```
+    integer = [0, 1, 2, 3, 4]
+    binary = ["0", "1", "10", "11", "100"]
+    binary_dict = {0:"0", 1:"1", 2:"10", 3: "11", 4:"100"}
+```
+
+2. Create a List which contains additive inverse of a given integer list. 
+An additive inverse `a` for an integer `i` is a number such that:
+```
+a + i = 0
+```
+Example:
+```
+integer = [1, -1, 2, 3, 5, 0, -7]
+additive_inverse = [-1, 1, -2, -3, -5, 0, 7]
+```
+
+3. Create a set which only contains unique sqaures from a given a integer list.
+```
+integer = [1, -1, 2, -2, 3, -3]
+sq_set = {1, 4, 9}
+```
+
+
+
+
+[Solution](https://github.com/codebasics/py/blob/master/Basics/python_basics/22_list_set_dict_comprehension/22_list_set_dict_comprehension.py)

Basics/Hindi/22_list_set_dict_comprehension/22_list_set_dict_comprehension.py

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+# Dictionary
+integer = [0, 1, 2, 3, 4]
+binary = ["0", "1", "10", "11", "100"]
+
+z = zip(integer, binary)
+binary_dict = {integer: binary for integer, binary in z}
+
+print(binary_dict)
+
+# List
+integer = [1, -1, 2, 3, 5, 0, -7]
+additive_inverse = [-1*i for i in integer]
+print(additive_inverse)
+
+# Set
+integer = [1, -1, 2, -2, 3, -3]
+sq_set = {i*i for i in integer}
+print(sq_set)

Basics/Hindi/23_sets_frozensets/23_sets_frozensets.md

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+## Exercise: Sets and Frozen Sets
+
+
+1. create any set anf try to use frozenset(setname)
+
+
+2. Find the elements in a given set that are not in another set
+
+
+```
+    set1 = {1,2,3,4,5}
+    set2 = {4,5,6,7,8}
+
+    diffrence between set1 and set2 is {1,2,3}
+     
+```
+
+
+
+[Solution](https://github.com/codebasics/py/blob/master/Basics/python_basics/23_sets_frozensets/23_sets_frozensets.py)

Basics/Hindi/23_sets_frozensets/23_sets_frozensets.py

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+set1 = {1, 2, 3, 4, 5}
+set2 = {4, 5, 6, 7, 8}
+print("Original sets:")
+print(set1)
+print(set2)
+print("Difference of set1 and set2 using difference():")
+print(set1.difference(set2))
+print("Difference of set2 and set1 using difference():")
+print(set2.difference(set1))
+print("Difference of set1 and set2 using - operator:")
+print(set1 - set2)
+print("Difference of set2 and set1 using - operator:")
+print(set2 - set1)

Basics/Hindi/24_argparse/24_argparse.md

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+## Exercise: Commandline Argument Processing using argparse
+
+1. Take subject marks as command line arguments 
+
+```
+example: 
+    python3 cmd.py --physics 60 --chemistry 70 --maths 90
+```
+
+2. Find average marks for the three subjects using command line input of marks.
+
+
+[Solution](https://github.com/codebasics/py/blob/master/Basics/python_basics/24_argparse/24_argparse.py)