Part 2 | Lists,Control Statements | Python Malayalam Tutorial For Beginners

Introduction

This tutorial focuses on fundamental concepts of Python programming, specifically lists and control statements. It is designed for beginners who wish to enhance their coding skills in Python. By the end of this guide, you will have a solid understanding of how to use lists and control flow in your Python programs.

Step 1: Understanding Lists

Lists are a versatile data structure in Python that can store multiple items in a single variable. Here’s how to work with lists:

• Creating a List

  my_list = [1, 2, 3, 4, 5]
  

• Accessing Elements
  • Use indexing to access elements: my_list[0] will return 1.
• Adding Elements
  • Use the append() method to add an element:

    my_list.append(6)
    

• Removing Elements
  • Use the remove() method to delete an element:

    my_list.remove(3)
    

Practical Tip: Lists can hold different data types, allowing you to mix integers, strings, and other objects.

Step 2: Control Statements

Control statements dictate the flow of execution in your programs. The main types are conditional statements and loops.

Step 2.1: If Statements

If statements allow you to execute code based on a condition.

• Basic Syntax

  if condition:
      # execute this block
  elif another_condition:
      # execute this block
  else:
      # execute this block
  

• Example

  age = 18
  if age >= 18:
      print("You are an adult.")
  else:
      print("You are a minor.")
  

Step 2.2: While Loops

While loops repeatedly execute a block of code as long as a condition is true.

• Basic Syntax

  while condition:
      # execute this block
  

• Example

  count = 0
  while count < 5:
      print(count)
      count += 1
  

Step 2.3: For Loops

For loops iterate over a sequence (like a list or string).

• Basic Syntax

  for item in iterable:
      # execute this block
  

• Example

  my_list = [1, 2, 3, 4, 5]
  for number in my_list:
      print(number)
  

Step 3: Using the Range Function

The range() function generates a sequence of numbers, which is useful for loops.

• Basic Usage

  for i in range(5):  # Generates numbers from 0 to 4
      print(i)
  

Common Pitfall: Remember that the range() function does not include the endpoint.

Step 4: Printing a Multiplication Table

You can combine loops to create a multiplication table.

• Example Code

  number = 5
  for i in range(1, 11):
      print(f"{number} x {i} = {number * i}")
  

Step 5: Implementing Break and Continue

Control the flow of loops using break and continue.

• Break Statement: Exits the loop

  for i in range(10):
      if i == 5:
          break
      print(i)
  

• Continue Statement: Skips to the next iteration

  for i in range(10):
      if i % 2 == 0:
          continue
      print(i)
  

Conclusion

In this tutorial, you learned about lists, control statements, and how to implement loops in Python. These foundational concepts are essential for developing more complex programs.

Next Steps

• Experiment with creating your own lists and control structures.
• Try building small projects that utilize these concepts, such as a simple calculator or a number guessing game.
• Continue exploring more advanced topics in Python for deeper knowledge and skills.