diff --git a/ch_nandu/task1/task1.py b/ch_nandu/task1/task1.py
new file mode 100644
index 0000000..a4c9d4a
--- /dev/null
+++ b/ch_nandu/task1/task1.py
@@ -0,0 +1,30 @@
+#a simple python program to perform basic tasks like addition,subtraction,multiplication,division
+print('please select any of the number for performing arithmetic operations')
+print("1.Addition")
+print('2.Subtraction')
+print('3.Multiplication')
+print('4.Division')
+print('5.exit')
+a=int(input('Enter any of the number for performing arithmetic operations'))
+def ari(a,var1,var2):
+ a,var1,var2=a,var1,var2
+ if(a==1):
+ print(var1+var2)
+ if(a==2):
+ print(var1-var2)
+ if(a==3):
+ print(var1*var2)
+ if(a==4):
+ print(var1/var2)
+ return
+
+#Enter Two numbers
+if((a>0) and (a<5)):
+ var1 = int(input('Enter First number: '))
+ var2 = int(input('Enter Second number: '))
+ ari(a,var1,var2)
+elif(a==5):
+ exit()
+else:
+ print('Invalid Option')
+ print('please select 1/2/3/4/5 only')
diff --git a/ch_nandu/task2/task2.py b/ch_nandu/task2/task2.py
new file mode 100644
index 0000000..1eacb0a
--- /dev/null
+++ b/ch_nandu/task2/task2.py
@@ -0,0 +1,59 @@
+class TaskManager:
+ def __init__(self):
+ self.tasks = []
+
+ def add_task(self, task):
+ self.tasks.append({"task": task, "completed": False})
+
+ def delete_task(self, index):
+ if 0 <= index < len(self.tasks):
+ del self.tasks[index]
+ else:
+ print("Invalid task index")
+
+ def mark_task_completed(self, index):
+ if 0 <= index < len(self.tasks):
+ self.tasks[index]["completed"] = True
+ else:
+ print("Invalid task index")
+
+ def display_tasks(self):
+ print("Tasks:")
+ for i, task in enumerate(self.tasks):
+ status = "Completed" if task["completed"] else "Pending"
+ print(f"{i+1}. {task['task']} - {status}")
+
+
+def main():
+ task_manager = TaskManager()
+
+ while True:
+ print("\nOptions:")
+ print("1. Add Task")
+ print("2. Delete Task")
+ print("3. Mark Task as Completed")
+ print("4. View Tasks")
+ print("5. Exit")
+
+ choice = input("Enter your choice: ")
+
+ if choice == "1":
+ task = input("Enter the task: ")
+ task_manager.add_task(task)
+ elif choice == "2":
+ index = int(input("Enter the index of the task to delete: ")) - 1
+ task_manager.delete_task(index)
+ elif choice == "3":
+ index = int(input("Enter the index of the task to mark as completed: ")) - 1
+ task_manager.mark_task_completed(index)
+ elif choice == "4":
+ task_manager.display_tasks()
+ elif choice == "5":
+ print("Exiting...")
+ break
+ else:
+ print("Invalid choice. Please try again.")
+
+
+if __name__ == "__main__":
+ main()
diff --git a/ch_nandu/task3/task3.py b/ch_nandu/task3/task3.py
new file mode 100644
index 0000000..f1bc4c2
--- /dev/null
+++ b/ch_nandu/task3/task3.py
@@ -0,0 +1,33 @@
+import random
+
+def guess_number():
+ # Generate a random number between 1 and 100
+ secret_number = random.randint(1, 100)
+ attempts = 0
+ max_attempts = 10
+
+ print("Welcome to the Number Guessing Game!")
+ print("I have chosen a number between 1 and 100. You have", max_attempts, "attempts to guess it.")
+
+ while attempts < max_attempts:
+ try:
+ guess = int(input("Enter your guess: "))
+ except ValueError:
+ print("Invalid input! Please enter a valid number.")
+ continue
+
+ attempts += 1
+
+ if guess < secret_number:
+ print("Too low! Try again.")
+ elif guess > secret_number:
+ print("Too high! Try again.")
+ else:
+ print("Congratulations! You've guessed the number", secret_number, "correctly in", attempts, "attempts!")
+ break
+ else:
+ print("Sorry, you've run out of attempts. The correct number was", secret_number)
+
+if __name__ == "__main__":
+ guess_number()
+
diff --git a/ch_nandu/task4/task4.py b/ch_nandu/task4/task4.py
new file mode 100644
index 0000000..2b9f9ea
--- /dev/null
+++ b/ch_nandu/task4/task4.py
@@ -0,0 +1,93 @@
+import PyPDF2
+from PIL import Image
+import os
+
+
+def convert_pdf_to_text(pdf_path, text_output_path):
+ """Converts a PDF file to text.
+
+ Args:
+ pdf_path (str): Path to the input PDF file.
+ text_output_path (str): Path to save the converted text file.
+ """
+ try:
+ with open(pdf_path, 'rb') as pdf_file:
+ pdf_reader = PyPDF2.PdfReader(pdf_file)
+ with open(text_output_path, 'w', encoding='utf-8') as text_file:
+ # Iterate through each page of the PDF
+ for page_num in range(len(pdf_reader.pages)):
+ page = pdf_reader.pages[page_num]
+ # Extract text from the page and write it to the text file
+ text_file.write(page.extract_text())
+ print(f"PDF converted to text successfully. Text file saved at {text_output_path}")
+ except Exception as e:
+ print(f"An error occurred: {e}")
+
+
+def extract_images_from_pdf(pdf_path, image_output_folder):
+ """Extracts images from a PDF file.
+
+ Args:
+ pdf_path (str): Path to the input PDF file.
+ image_output_folder (str): Folder to save the extracted images.
+ """
+ try:
+ with open(pdf_path, 'rb') as pdf_file:
+ pdf_reader = PyPDF2.PdfReader(pdf_file)
+ # Iterate through each page of the PDF
+ for page_num in range(len(pdf_reader.pages)):
+ page = pdf_reader.pages[page_num]
+ xObject = page['/Resources']['/XObject'].getObject()
+ for obj in xObject:
+ if xObject[obj]['/Subtype'] == '/Image':
+ size = (xObject[obj]['/Width'], xObject[obj]['/Height'])
+ data = xObject[obj]._data
+ mode = ''
+ if xObject[obj]['/ColorSpace'] == '/DeviceRGB':
+ mode = "RGB"
+ else:
+ mode = "P"
+ if xObject[obj]['/Filter'] == '/FlateDecode':
+ img = Image.frombytes(mode, size, data)
+ img.save(os.path.join(image_output_folder, f"page{page_num+1}_{obj[1:]}.png"))
+ elif xObject[obj]['/Filter'] == '/DCTDecode':
+ img = open(os.path.join(image_output_folder, f"page{page_num+1}_{obj[1:]}.jpg"), "wb")
+ img.write(data)
+ img.close()
+ elif xObject[obj]['/Filter'] == '/JPXDecode':
+ img = open(os.path.join(image_output_folder, f"page{page_num+1}_{obj[1:]}.jp2"), "wb")
+ img.write(data)
+ img.close()
+ print(f"Images extracted successfully. Saved in {image_output_folder}")
+ except Exception as e:
+ print(f"An error occurred: {e}")
+
+
+def main():
+ # Get input paths and output folder from user
+ pdf_path = input("Enter the path to the PDF file: ")
+ output_folder = input("Enter the output folder path: ")
+
+ # Create the output folder if it does not exist
+ if not os.path.exists(output_folder):
+ os.makedirs(output_folder)
+
+ # Choose conversion option
+ choice = input("Choose an option:\n1. Convert PDF to text\n2. Extract images from PDF\nEnter your choice: ")
+
+ if choice == '1':
+ # Convert PDF to text
+ text_output_path = os.path.join(output_folder, "converted_text.txt")
+ convert_pdf_to_text(pdf_path, text_output_path)
+ elif choice == '2':
+ # Extract images from PDF
+ image_output_folder = os.path.join(output_folder, "extracted_images")
+ if not os.path.exists(image_output_folder):
+ os.makedirs(image_output_folder)
+ extract_images_from_pdf(pdf_path, image_output_folder)
+ else:
+ print("Invalid choice. Please choose 1 or 2.")
+
+
+if __name__ == "__main__":
+ main()