oop, iterator, decorator

Author: lev epshtein

OOP/dog.py

@@ -16,6 +16,9 @@ def __init__(self, name, age):
         self.name = name
         self.age = age
 
+    def speak(self, sound):
+        return f"{self.name} says {sound}"
+
 
 # Instantiate the Dog object
 philo = Dog("Philo", 5)
@@ -27,3 +30,6 @@ def __init__(self, name, age):
 # Is Philo a mammal?
 if philo.species == "mammal":
     print(f"{philo.name} is a {philo.species}!")
+
+print(philo.speak("Woof Woof"))
+print(mikey.speak("Waf Waf"))

OOP/dog_inheritance.py

@@ -0,0 +1,25 @@
+# Using OOP in Python, we can restrict access to methods and variables.
+# This prevents data from direct modification which is called encapsulation.
+# In Python, we denote private attributes using underscore as the prefix i.e single _ or double __.
+
+class Computer:
+
+    def __init__(self):
+        self.__maxprice = 900
+
+    def sell(self):
+        print("Selling Price: {}".format(self.__maxprice))
+
+    def setMaxPrice(self, price):
+        self.__maxprice = price
+
+c = Computer()
+c.sell()
+
+# change the price
+c.__maxprice = 1000
+c.sell()
+
+# using setter function
+c.setMaxPrice(1000)
+c.sell()

OOP/dog_sol.py

@@ -0,0 +1,30 @@
+# parent class
+class Bird:
+    
+    def __init__(self):
+        print("Bird is ready")
+
+    def whoisThis(self):
+        print("Bird")
+
+    def swim(self):
+        print("Swim faster")
+
+# child class
+class Penguin(Bird):
+
+    def __init__(self):
+        # call super() function
+        super().__init__()
+        print("Penguin is ready")
+
+    def whoisThis(self):
+        print("Penguin")
+
+    def run(self):
+        print("Run faster")
+
+peggy = Penguin()
+peggy.whoisThis()
+peggy.swim()
+peggy.run()

OOP/encapsulation.py

@@ -0,0 +1,27 @@
+class Parrot:
+
+    def fly(self):
+        print("Parrot can fly")
+    
+    def swim(self):
+        print("Parrot can't swim")
+
+class Penguin:
+
+    def fly(self):
+        print("Penguin can't fly")
+    
+    def swim(self):
+        print("Penguin can swim")
+
+# common interface
+def flying_test(bird):
+    bird.fly()
+
+#instantiate objects
+blu = Parrot()
+peggy = Penguin()
+
+# passing the object
+flying_test(blu)
+flying_test(peggy)

OOP/inheritance.py

@@ -30,14 +30,15 @@
 
 ## Let's add more code , with differnt broken line
 # try:
-#     f = open('test.txt','r') # file open fixed
+#     # f = open('test.txt','r') # file open fixed
 #     var = bad_var # bad varibale
 # except FileNotFoundError as e: # add and show as e, print(e)
 #     print("Sorry this file isn't exist!")
 #     print(e)
 # except Exception as e: # add and show as e, print(e)
 #     print("Something went wrong!")
 #     print(e)
+#     print(type(e))
 
 ## Else block
 # try:
@@ -61,17 +62,17 @@
 
 ## Log module
 
-# import logging
+import logging
 
-# logging.basicConfig(filename='example.log',level=logging.DEBUG)
+logging.basicConfig(filename='example.log',level=logging.DEBUG)
 
-# try:
-#     f = open('test.txt','r')
-# except Exception as e:
-#     logging.error(e)
-# else:
-#     print(f.read())
-#     logging.info("end file {} manipulation".format(f.name))
-#     f.close()
-# finally:
-#     logging.info("from finally block of exception")
+try:
+    f = open('test_.txt','r')
+except Exception as e:
+    logging.error(e)
+else:
+    print(f.read())
+    logging.info("end file {} manipulation".format(f.name))
+    f.close()
+finally:
+    logging.info("from finally block of exception")

OOP/polymorphism.py

@@ -0,0 +1 @@
+Test

exeption_logging/exeption_logging.py

@@ -14,15 +14,15 @@
 # print(f.read())
 
 ## read and print whole file :
-# with open('test.txt','r') as f:
+# with open('C:\\Users\\lev\\Documents\\OpsGuru\\projects\\Devops-course\\devops-python\\files_os_module\\test.txt','r') as f:
 #     f_contents = f.read()
 #     print(f_contents)
 
 ## read and print line by line file:
 # with open('test.txt','r') as f:
-# with open('test.txt','r') as f:
+# with open('test.txt','r') as fa:
 #     # f_contents = f.readlines()
-#     f_contents = f.readlines()
+#     f_contents = fa.readlines()
 #     print(f_contents)
 
 ## read and print single line, first one every time we call function readline will read next line (copy and show)
@@ -39,9 +39,9 @@
 
 ## More control for reading , explanation of read buffer
 # with open('test.txt','r') as f:
-#     f_contents = f.read()
-    # f_contents = f.read(100) # copy and explain
-    # print(f_contents, end='')
+#     # f_contents = f.read()
+#     f_contents = f.read(100) # copy and explain
+#     print(f_contents, end='')
 
 ## More contr eol for big files with while and EOF condition in while loop, also f.tell() and f.seek()
 # with open('test.txt','r') as f:
@@ -88,7 +88,7 @@
 #  suppose you want to make a subfolder under your home folder: $HOMEPATH/python-project/project1/temp
 # folder_name = os.path.join(os.environ['HOMEPATH'],'python-project','project1','temp')
 # os.makedirs(folder_name)
-
+# class
 ## Walking throught directories and files :
 # for dirpath, dirname, filename in os.walk(os.environ['HOMEPATH']):
 #     print('Current path',dirpath)

files_os_module/test2.txt

@@ -33,15 +33,15 @@
 #####
 
 # Function with args and kwargs
-# def student_info(*args, **kwargs):
-#     print(args)
-#     print(kwargs)
-# #
-# student_info('Math', 'Art', name='Jhon', age=22)
-# print ("---")
-# courses = ['Math', 'Art']
-# info = {'name':'Jhon', 'age':22}
+def student_info(*args, **kwargs):
+    print(args)
+    print(kwargs)
+#
+student_info('Math', 'Art', name='Jhon', age=22)
+print ("---")
+courses = ['Math', 'Art']
+info = {'name':'Jhon', 'age':22}
 
-# student_info(courses, info)
-# print ("---")
-# student_info(*courses, **info)
+student_info(courses, info)
+print ("---")
+student_info(*courses, **info)