Added functions.py

14_json_addressbook.py

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+import json
+f = open("C:\\data\\book.txt","w+")
+phone_book = {}
+command = ""
+while command != 'exit':
+    command = input('Enter a command(options: new,get,save): ')
+    if command == "new":
+        name = input('Enter name of the person')
+        p = input('Phone number: ')
+        a = input('Address: ')
+        phone_book[name] = {'phone': p, 'address': a}
+    elif command == 'get':
+        name = input('Enter name of the person')
+        if name in phone_book:
+            print(phone_book[name])
+        else:
+            print('person not found in address book')
+    elif command == 'save':
+        f.write(json.dumps(phone_book))

16_exception.py

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+x=input("Enter number1: ")
+y=input("Enter number2: ")
+try:
+    z = int(x) / int(y)
+except ZeroDivisionError as e:
+    print('Division by zero exception')
+    z = None
+except TypeError as e:
+    print('Type error exception')
+    z = None
+print("Division is: ", z)

17_class.py

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+class Human:
+    def __init__(self, n, o):
+        self.name = n
+        self.occupation = o
+
+    def do_work(self):
+        if self.occupation == "tennis player":
+            print(self.name, "plays tennis")
+        elif self.occupation == "actor":
+            print(self.name, "shoots film")
+
+    def speaks(self):
+        print(self.name, "says how are you?")
+
+tom = Human("tom cruise","actor")
+tom.do_work()
+tom.speaks()
+
+maria = Human("maria sharapova","tennis player")
+maria.do_work()
+maria.speaks()

18_inheritance.py

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+class Vehicle:
+    def general_usage(self):
+        print("general use: transporation")
+
+class Car(Vehicle):
+    def __init__(self):
+        print("I'm car")
+        self.wheels = 4
+        self.has_roof = True
+
+    def specific_usage(self):
+        self.general_usage()
+        print("specific use: commute to work, vacation with family")
+
+class MotorCycle(Vehicle):
+    def __init__(self):
+        print("I'm motor cycle")
+        self.wheels = 2
+        self.has_roof = False
+
+    def specific_usage(self):
+        self.general_usage()
+        print("specific use: road trip, racing")
+
+c = Car()
+m = MotorCycle()
+
+print(issubclass(Car,MotorCycle))

address.py

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+book = {}
+book['tom'] = {
+    'name': 'tom',
+    'address': '1 red street, NY',
+    'phone': 98989898
+}
+book['bob'] = {
+    'name': 'bob',
+    'address': '1 green street, NY',
+    'phone': 23424234
+}
+
+import json
+s=json.dumps(book)
+with open("c://data//book.txt","w") as f:
+    f.write(s)

area.py

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+def calculate_area(base, height):
+    print("__name__: ",__name__)
+    return 1/2*(base*height)
+
+if __name__ == "__main__":
+    print("I am in area.py")
+    a=calculate_area(10, 20)
+    print("area: ",a)

caller.py

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+import area
+print("I am in caller.py")
+area.calculate_area(5,10)

myprogram.py

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+import sys
+sys.path.append("C:\Code")
+import functions as f
+area = f.calculate_square_area(10)
+area = f.calculate_triangle_area(5,10)
+print(area)

test.py

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+def sum(a,b):
+    return a+b
+
+def sum(a,b):
+    return str(a)+str(b)+"***"
+
+print(sum("a","b"))