script - manipulating strings

[Medini]

1. The common instructions for all the spoken tutorials should be applied to this also.
2. s = saturday
   This command on terminal gives error. It should be s = "saturday"
3. s = saturday
   s[:3]
   Define the string properly
4. Now, to check if the string is s is palindromic, we say
   Grammatically incorrect sentence
5. %%2%% 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.
   Put this question in simplified and clear form.
6. email_str = ", ".join(email_list)
   please explain more about this command
7. %%3%% From the email_str that we generated, change the separator to be
   a semicolon instead of a comma.
   This exercise 3 should test the concept of join and not replace. Change the question in it.
8. Write the summary appropriately.