diff --git a/07_Practice.py b/07_Practice.py
index 734c931..cc73d96 100644
--- a/07_Practice.py
+++ b/07_Practice.py
@@ -6,7 +6,7 @@
 
 # Print squares of numbers from 1 to n
 n = int(input("Enter a number:"))
-for i in range(1,n):
+for i in range(1,n+1):
     print(i**2)
 
 
diff --git a/09_Global_local.py b/09_Global_local.py
index d333112..55013f8 100644
--- a/09_Global_local.py
+++ b/09_Global_local.py
@@ -4,7 +4,7 @@ def greet():
     print(msg)
 
 greet()
-
+"""print("Outside:", msg)"""  # This will raise an error since msg is not defined outside the function
 
 # global variables
 msg = "Hello"
@@ -16,11 +16,11 @@ def greet_global():
 
 
 def fun():
-    print("Inside Function", s)
+    print("Inside Function: ", s)
 
 s = "I love Geeksforgeeks"
 fun()
-print("Outside Function", s)
+print("Outside Function: ", s)
 
 
 # Modifying Global Variables Inside a Function
@@ -30,4 +30,4 @@ def fun():
     print(s)
 s = "I love Geeksforgeeks "
 fun()
-print("Outside Function", s)
+print("Outside Function: ", s)
diff --git a/14_Decorators.py b/14_Decorators.py
index 6af1d83..798014c 100644
--- a/14_Decorators.py
+++ b/14_Decorators.py
@@ -40,7 +40,8 @@ def square(x):
 
 
 
-# Types of Decorators
+"""Types of Decorators"""
+
 # 1. Function Decorators
 # Function decorators are used to modify or enhance the behavior of functions.
 def simple_decorator(func):
@@ -86,7 +87,7 @@ def say_hello(self):
 obj.say_hello()     
 
 
-# Common Built-in Decorators in Python
+"""Common Built-in Decorators in Python"""
 # @staticmethod
 class MathOperations:
     @staticmethod
diff --git a/15_Strings.py b/15_Strings.py
index 11a963b..d333903 100644
--- a/15_Strings.py
+++ b/15_Strings.py
@@ -16,7 +16,7 @@
 print(str4.strip()) # Remove leading and trailing spaces
 print(str3.replace("Venkateswara", "College")) # Replace substring
 print(str3.split()) # Split into a list of words
-print(str3.find("a")) # Find the index of a substring
+print(str3.find("a")) # Find the first occurence index of a substring
 print(str3.index("Venkateswara")) # Find the index of a substring (raises error if not found)
 print(str3.count("a")) # Count occurrences of a character
 print(str3.startswith("Ven")) # Check if string starts with a substring