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#+TITLE:    Loops

#+AUTHOR:    FOSSEE

#+EMAIL:     

#+DATE:    

#+DESCRIPTION: 

#+KEYWORDS: 

#+LANGUAGE:  en

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* Outline

  - Loop while a condition is true. 

  - Iterate over a sequence

  - Breaking out of loops.

  - Skipping iterations.

* Question 1

  Write a ~while~ loop to print the squares of all the even

  numbers below 10. 

* Solution 1

  #+begin_src python

    In []: i = 2

    In []:  while i<10:

     ....:     print i*i

     ....:     i += 2

  #+end_src

* Question 2

  Write a ~for~ loop to print the squares of all the even numbers

  below 10.

* Solution 2

  #+begin_src python    

    In []: for n in range(2, 10, 2):

     ....:     print n*n

  #+end_src

* Question 3

  Using the ~continue~ keyword modify the ~for~ loop to print the

  squares of even numbers below 10, to print the squares of only

  multiples of 4. (Do not modify the range function call.)

* Solution 3

  #+begin_src python    

    for n in range(2, 10, 2):

        if n%4:

            continue      

        print n*n

  #+end_src

* Summary

  You should now be able to --

  - use the ~for~ loop 

  - use the ~while~ loop

  - Use ~break~, ~continue~ and ~pass~ statements 

* Thank you!

#+begin_latex

  \begin{block}{}

  \begin{center}

  This spoken tutorial has been produced by the

  \textcolor{blue}{FOSSEE} team, which is funded by the 

  \end{center}

  \begin{center}

    \textcolor{blue}{National Mission on Education through \\

      Information \& Communication Technology \\ 

      MHRD, Govt. of India}.

  \end{center}  

  \end{block}

#+end_latex