Python for Loop

The for loop in Python is used to iterate over a sequence like list, tuple, string, or range. It repeats a block of code for each item.

Python में for loop का उपयोग list, tuple, string या range जैसे sequence पर चलने के लिए होता है। यह हर item के लिए कोड को repeat करता है।

10 Python for Loop Programs with Output and Explanation

1. Print numbers from 1 to 5

   for i in range(1, 6):
       print(i)

   Output:

   1
   2
   3
   4
   5

   Explanation: Loops through numbers from 1 to 5.
2. Print even numbers between 1 to 10

   for i in range(2, 11, 2):
       print(i)

   Output:

   2
   4
   6
   8
   10

3. Print characters in a string

   for ch in "Python":
       print(ch)

   Output:

   P
   y
   t
   h
   o
   n

4. Loop through a list

   colors = ["red", "green", "blue"]
   for color in colors:
       print(color)

   Output:

   red
   green
   blue

5. Print table of 5

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

   Output:

   5 x 1 = 5
   5 x 2 = 10
   5 x 3 = 15
   5 x 4 = 20
   5 x 5 = 25
   5 x 6 = 30
   5 x 7 = 35
   5 x 8 = 40
   5 x 9 = 45
   5 x 10 = 50

6. Print square of numbers 1 to 5

   for i in range(1, 6):
       print("Square of", i, "is", i*i)

   Output:

   Square of 1 is 1
   Square of 2 is 4
   Square of 3 is 9
   Square of 4 is 16
   Square of 5 is 25

7. Count vowels in a string

   text = "education"
   vowels = "aeiou"
   count = 0
   for ch in text:
       if ch in vowels:
           count += 1
   print("Vowel count:", count)

   Output:

   Vowel count: 5

8. Print reverse of a string

   s = "hello"
   for ch in reversed(s):
       print(ch)

   Output:

   o
   l
   l
   e
   h

9. Print index and value

   items = ["pen", "book", "bottle"]
   for index, value in enumerate(items):
       print(index, ":", value)

   Output:

   0 : pen
   1 : book
   2 : bottle

10. Nested loop - print 3x3 pattern

    for i in range(1, 4):
        for j in range(1, 4):
            print(i, j)

    Output:

    1 1
    1 2
    1 3
    2 1
    2 2
    2 3
    3 1
    3 2
    3 3