Looping Statement: For Loop

Hello everyone, in this post we will discuss another Looping statement, which is the For Loop.

What is For Loop?

From the last post we know what are Looping statement, For loop statement is similar to while. While constructing a For Loop, you just need to remember this line. "FOR something IN something, keep doing something"

Lets check it out:

First lets make a List,

>>> behavior = ['good', 'not bad', 'crazy', 'not selfish', 'innocent', 'kind to all']
>>> for python in behavior:
             print "I am "+python

I am good
I am not bad
I am crazy
I am not selfish
I am innocent
I am kind to all
>>>

What happened exactly?

In the for statement, it says  for python in behavior, here python is a variable that is to be looped with list behavior.

If have done some other other programming language, you will notice that the python for loop statement is little different, but this is how it works, cant help it.

In Python the variable is looped with every element of a List from Left to Right.

Its little confusing, I know, but don't give up on it, practice it, make your own programs with the For Loop and you will get out of confusion.

However the later posts will make the things more clear.

Thank You and Don't forget to check the next post.

Looping Statement: While Loop

Hello everyone, in this post we will Discuss about Loops.

What is a Loop?

Anything which keeps on repeating, based on a certain condition, is known as Loop.

In Python, Like other Programming Language, we have several looping statements, We will start with the While Loop


>>> x = 1
>>> while x <= 10:
           print "I Am ",x
           x = x + 1

I Am  1
I Am  2
I Am  3
I Am  4
I Am  5
I Am  6
I Am  7
I Am  8
I Am  9
I Am  10
>>>

Explanation: We have initiated the variable x, so the value of x is 1, next statement, while x <= 10: means keep doing the statements you have under while until x becomes less than or equal to 10. But as of now the x is 1, so it needs to execute the statements under the while statement, the print statement is pretty clear, which says print "I Am", x means print I Am x (x = present value of x), so it prints out I Am 1, next statement it find x = x + 1, means add one to the present value of x, so x becomes 2, x + 1(1 + 1) = 2, it returns to the while statement, checks the condition, present value of x is 2, since x is less than 10, it will again execute the statements under the while, in this way when the value of x becomes 11, and it returns to the while statement and the condition becomes false, it skips the statements under the while statements.


Lets Make a small Program

# Program to display the multiplication table of any given number upto 10.
num = input("Hey You! Give Me A Number \nAnd I Will Display The Multiplication Table Upto 10, Faster Than You Can Write: ")
count = 1
while count<=10:
    print num, " * ", count, " = ",  num*count
    count +=1
raw_input("Press Enter To Exit")

Output:

>>>
Hey You! Give Me A Number
And I Will Display The Multiplication Table Upto 10, Faster Than You Can Write: 8
8  *  1  =  8
8  *  2  =  16
8  *  3  =  24
8  *  4  =  32
8  *  5  =  40
8  *  6  =  48
8  *  7  =  56
8  *  8  =  64
8  *  9  =  72
8  *  10  =  80
Press Enter To Exit

Okay Interesting, isn't it?

I hope this is Informative For You, Practice it, And Here is a Task For You:

Question:

Write a Program which would display the Multiplication Table Of Any Given Number, Upto Any Given Point.

Example:
Give me a number to multiply: 9
How Far Should I Show you The Table: 20

and then it should display the multiplication table upto 20.

Good Luck!