Core Python Programming (2nd Edition)

6.22. Exercises
6-1. Strings. Are there any string methods or functions in the string module that will help
me determine if a string is part of a larger string?
6-2. String Identifiers. Modify the idcheck.py script in Example 6-1 such that it will
determine the validity of identifiers of length 1 as well as be able to detect if an
identifier is a keyword. For the latter part of the exercise, you may use the keyword
module (specifically the keyword.kwlist list) to aid in your cause.
6-3. Sorting.
a.
b.
Enter a list of numbers and sort the values in largest-to-smallest order.
Do the same thing, but for strings and in reverse alphabetical (largest-tosmallest
lexicographic) order.
6-4. Arithmetic. Update your solution to the test score exercise in the previous chapter
such that the test scores are entered into a list. Your code should also be able to come
up with an average score. See Exercises 2-9 and 5-3.
6-5. Strings.
a.
b.
c.
Update your solution to Exercise 2-7 so that you display a string one character
at a time forward and backward.
Determine if two strings match (without using comparison operators or the cmp
() built-in function) by scanning each string. Extra credit: Add caseinsensitivity
to your solution.
Determine if a string is palindromic (the same backward as it is forward). Extra
credit: Add code to suppress symbols and whitespace if you want to process
anything other than strict palindromes.