{"id":28,"date":"2025-10-19T02:54:23","date_gmt":"2025-10-19T02:54:23","guid":{"rendered":"https:\/\/codetypingpro.com\/?p=28"},"modified":"2025-12-17T11:50:02","modified_gmt":"2025-12-17T11:50:02","slug":"lesson-6-loops-in-python","status":"publish","type":"post","link":"https:\/\/codetypingpro.com\/?p=28","title":{"rendered":"Lesson 6: Loops in Python"},"content":{"rendered":"\n

\ud83c\udfaf Lesson Objective<\/strong><\/h3>\n\n\n\n

To understand how to repeat tasks using loops in Python efficiently.
You will learn about the for<\/code> loop, while<\/code> loop, nested loops, and control statements like break<\/code> and continue<\/code>.<\/p>\n\n\n\n

\n\n\n\n

\ud83e\udde0 1. What Are Loops?<\/strong><\/h3>\n\n\n\n

Loops allow you to execute a block of code repeatedly<\/strong> until a certain condition is met.
They are used when you want to perform the same task multiple times \u2014 for example, printing numbers, iterating through a list, or processing data.<\/p>\n\n\n\n

\n\n\n\n

\ud83d\udd01 2. Types of Loops in Python<\/strong><\/h3>\n\n\n\n

Python supports two main types of loops:<\/p>\n\n\n\n

    \n
  1. for loop<\/strong> \u2013 used for iterating over a sequence (list, tuple, string, etc.)<\/li>\n\n\n\n
  2. while loop<\/strong> \u2013 runs as long as a condition remains True<\/li>\n<\/ol>\n\n\n\n
    \n\n\n\n

    \u2699\ufe0f 3. for<\/code> Loop Syntax<\/strong><\/h3>\n\n\n\n
    for variable in sequence:\n    # code block\n<\/code><\/pre>\n\n\n\n
    Example:<\/p>\n\n\n\n
    for i in range(5):\n    print(\"Hello Python\")\n<\/code><\/pre>\n\n\n\n
    Output:<\/p>\n\n\n\n
    Hello Python\nHello Python\nHello Python\nHello Python\nHello Python\n<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \ud83d\udccb 4. Using range()<\/code> Function<\/strong><\/h3>\n\n\n\n
    The range()<\/code> function generates a sequence of numbers.
    It can take 1, 2, or 3 arguments: range(start, stop, step)<\/code><\/p>\n\n\n\n
    Example:<\/p>\n\n\n\n
    for i in range(1, 10, 2):\n    print(i)\n<\/code><\/pre>\n\n\n\n
    Output:<\/p>\n\n\n\n
    1\n3\n5\n7\n9\n<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \ud83d\udd04 5. Looping Through Lists and Strings<\/strong><\/h3>\n\n\n\n
    You can loop through any iterable (like a list or string).<\/p>\n\n\n\n
    Example 1: Loop through a list<\/p>\n\n\n\n
    fruits = [\"apple\", \"banana\", \"cherry\"]\nfor fruit in fruits:\n    print(fruit)\n<\/code><\/pre>\n\n\n\n
    Example 2: Loop through a string<\/p>\n\n\n\n
    for letter in \"PYTHON\":\n    print(letter)\n<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \u23f3 6. The while<\/code> Loop<\/strong><\/h3>\n\n\n\n
    A while<\/code> loop runs until its condition becomes False<\/code>.<\/p>\n\n\n\n
    Syntax:<\/p>\n\n\n\n
    while condition:\n    # code block\n<\/code><\/pre>\n\n\n\n
    Example:<\/p>\n\n\n\n
    count = 1\nwhile count <= 5:\n    print(\"Count:\", count)\n    count += 1\n<\/code><\/pre>\n\n\n\n
    Output:<\/p>\n\n\n\n
    Count: 1\nCount: 2\nCount: 3\nCount: 4\nCount: 5\n<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \u26a0\ufe0f 7. Infinite Loops<\/strong><\/h3>\n\n\n\n
    If the condition in a while<\/code> loop never becomes False<\/code>, it runs forever.<\/p>\n\n\n\n
    while True:\n    print(\"This will run forever!\")\n<\/code><\/pre>\n\n\n\n
    \u2757 Use Ctrl + C<\/code> to stop infinite loops manually.<\/p>\n\n\n\n
    \n\n\n\n
    \ud83e\udde9 8. Loop Control Statements<\/strong><\/h3>\n\n\n\n
    Python provides special keywords to control loop behavior.<\/p>\n\n\n\n
    break<\/code> \u2013 Exit the loop early<\/h4>\n\n\n\n
    for i in range(10):\n    if i == 5:\n        break\n    print(i)\n<\/code><\/pre>\n\n\n\n
    Output:<\/p>\n\n\n\n
    0\n1\n2\n3\n4\n<\/code><\/pre>\n\n\n\n
    continue<\/code> \u2013 Skip the current iteration<\/h4>\n\n\n\n
    for i in range(5):\n    if i == 2:\n        continue\n    print(i)\n<\/code><\/pre>\n\n\n\n
    Output:<\/p>\n\n\n\n
    0\n1\n3\n4\n<\/code><\/pre>\n\n\n\n
    pass<\/code> \u2013 Placeholder for future code<\/h4>\n\n\n\n
    for i in range(3):\n    pass  # no action taken now\n<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \ud83d\udd01 9. Nested Loops<\/strong><\/h3>\n\n\n\n
    You can place one loop inside another.<\/p>\n\n\n\n
    Example:<\/p>\n\n\n\n
    for i in range(1, 4):\n    for j in range(1, 4):\n        print(i, j)\n<\/code><\/pre>\n\n\n\n
    Output:<\/p>\n\n\n\n
    1 1\n1 2\n1 3\n2 1\n2 2\n2 3\n3 1\n3 2\n3 3\n<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \ud83c\udf0d 10. Real-Life Example: Multiplication Table<\/strong><\/h3>\n\n\n\n
    num = int(input(\"Enter a number: \"))\nfor i in range(1, 11):\n    print(f\"{num} x {i} = {num * i}\")\n<\/code><\/pre>\n\n\n\n
    Output (for input 5):<\/p>\n\n\n\n
    5 x 1 = 5\n5 x 2 = 10\n...\n5 x 10 = 50\n<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \ud83e\udde0 11. Practice Ideas<\/strong><\/h3>\n\n\n\n
      \n
    1. Print numbers from 1 to 20 using both for<\/code> and while<\/code> loops.<\/li>\n\n\n\n
    2. Display all even numbers between 1 and 50.<\/li>\n\n\n\n
    3. Create a program that reverses a string using a loop.<\/li>\n\n\n\n
    4. Use a loop to count vowels in a given sentence.<\/li>\n\n\n\n
    5. Generate a simple pattern like:<\/li>\n<\/ol>\n\n\n\n
      *\n**\n***\n****\n*****<\/p>\n\n\n\n
      Lesson_6_Loops_Practice_Sheet<\/a>Download<\/a><\/div>\n\n\n\n
      more examples<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
      \ud83c\udfaf Lesson Objective To understand how to repeat tasks using loops in Python efficiently.You will learn about the for loop, while loop, nested loops, and control statements like break and continue. \ud83e\udde0 1. What Are Loops? Loops allow you to execute a block of code repeatedly until a certain condition is met.They are used when […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,1],"tags":[],"class_list":["post-28","post","type-post","status-publish","format-standard","hentry","category-python-easy-course-outline","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/codetypingpro.com\/index.php?rest_route=\/wp\/v2\/posts\/28","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/codetypingpro.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/codetypingpro.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/codetypingpro.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/codetypingpro.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=28"}],"version-history":[{"count":2,"href":"https:\/\/codetypingpro.com\/index.php?rest_route=\/wp\/v2\/posts\/28\/revisions"}],"predecessor-version":[{"id":354,"href":"https:\/\/codetypingpro.com\/index.php?rest_route=\/wp\/v2\/posts\/28\/revisions\/354"}],"wp:attachment":[{"href":"https:\/\/codetypingpro.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=28"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codetypingpro.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=28"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codetypingpro.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=28"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}