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#+TITLE:    Manipulating strings

#+AUTHOR:    FOSSEE

#+EMAIL:     

#+DATE:    

#+DESCRIPTION: 

#+KEYWORDS: 

#+LANGUAGE:  en

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* Outline

  - Slicing strings to get sub-strings

  - Reversing strings

  - Replacing characters in strings. 

  - Converting strings to upper or lower case

  - Joining a list of strings

* Question 1

  Obtain the sub-string excluding the first and last characters from

  the string ~s~.

* Solution 1

  #+begin_src python

    In []:  s[1:-1]

  #+end_src

* Question 2

  Given a list week, week = ~week = ["sun", "mon", "tue", "wed",

  "thu", "fri", "sat"]~. Check if ~s~ is a valid name of a day of the

  week. Change the solution to this problem, to include forms like,

  SAT, SATURDAY, Saturday and Sat.

* Solution 2

  #+begin_src python

    In []:  s in week

    In []:  s.lower()[:3] in week

  #+end_src

* Question 3

  Given ~email~ -- ~info@fossee[dot]in~

  Replace the ~[dot]~ with ~.~ in ~email~

* Solution 3

  #+begin_src python

    email.replace('[dot], '.')

    print email

  #+end_src

* Question 4

  From the ~email_str~ that we generated, change the separator to be a

  semicolon instead of a comma.

* Solution 4

  #+begin_src python

    email_str = email_str.replace(",", ";")

  #+end_src

* Summary

  You should now be able to --

  - Slice strings and get sub-strings out of them

  - Reverse strings

  - Replace characters in strings. 

  - Convert strings to upper or lower case

  - Join a list of strings

* 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