Exam Prep and Wrap-Up

1. Exam Prep and Wrap-Up Intro to Computer Science CS1510, Section 2 Dr. Sarah Diesburg

2. Topics for today • Information on the exams • Several examples from your book • Some string formatting examples

3. Exam Information • Two exams next week • Focuses on chapters 0-4 • Includes material from the lectures and from the readings.

4. Exam Information • Monday • In class, written exam • Mixture of multiple choice, short answer, and essay. • 100 points • Closed book, closed notes

5. Exam Information • Tuesday • In lab, programming exam • Five small scripts • 125 points (25 points each) • Closed book, MOSTLY closed notes • One page (one sided) of handwritten notes • May also use the built in Python documentation (really not helpful if you haven’t used it before then)

6. Advice for the Tests • These things can make the difference of whether you pass or fail this class when studying • Go through each class days notes and example programs on the website • Practice coding over and over by going through your labs!!! This is the only way to really learn. • Review vocabulary and concepts by reading the book!!

7. Again… • The only way you can become comfortable with a toolset is to practice • Understanding what a power drill does will not help you much if you don’t practice using it • It’s the same for code • Practicing coding will make you more familiar with the coding structures necessary to code more quickly • Patterns will emerge, it will become easier

8. Review Wrap-Up • Find a Letter • Error Checking • Nested Loops

9. 4.1 Find a Letter river = 'Mississippi' target = input('Input character to find: ') found = False for index in range(len(river)): #for each index if river[index] == target: #check print( "Letter found at index: ", index ) found = True break # stop searching if (found == False) print( 'Letter',target,'not found in',river)

10. Examples

11. Enumerate Function • The enumerate function prints out two values: the index of an element and the element itself • Can use it to iterate through both the index and element simultaneously, doing dual assignment

12. 4.2-4.3 Enumeration # print first occurrence river = 'Mississippi' target = input('Input character to find: ') for index,letter in enumerate(river): if letter== target: #check print ("Letter found at index: ", index) break # stop searching else: print( 'Letter',target,'not found in',river)

13. 4.2-4.3 Enumeration # print all occurrences river = 'Mississippi' target = input('Input character to find: ') for index,letter in enumerate(river): if letter== target: #check print ("Letter found at index: ", index ) # break # stop else: print( 'Letter',target,'not found in',river)

14. Split Function • The split function will take a string and break it into multiple new string parts depending on what the argument character is. • By default, if no argument is provided, split is on any whitespace character (tab, blank, etc.) • You can assign the pieces with multiple assignment if you know how many pieces are yielded.

15. Reorder a Name origName = ‘John Marwood Cleese’ first,mid,last = origName.split() name = last + ‘, ‘ + first + ‘ ‘ + mid print (name)