I210 review

About Final Exam When: 2:45-4:45 p.m., Thurs., May 7 Where: BU 400 What will be covered: Everything we talked so far (excluding the optional topics) If you attended most of the lectures, did the PLTL exercises, wrote your own codes, took the quizzes by yourself, you should have nothing to worry about the final exam! Guide to Programming with Python

Data Types Data type: sequences (containers) Strings (a sequence of letters) Tuples (a sequence of elements of any type; immutable) Lists (a sequence of elements of any type; mutable) Dictionary is NOT a sequence How to access the elements in a sequence Sequential access (using for and while loops) Indexing & Slicing Removing and adding elements Important sequence operators and functions, len([1, 2, 3]), ”a" in "abc", [1, 2, 3].index(1) Guide to Programming with Python

Branching Structures Branches based on a condition/conditions if if-else if-elif-else Condition: Expression that is True or False Often create conditions by comparing values Treating values as conditions: Any empty (None) or zero value is False Compound conditions (logical operators) Guide to Programming with Python

Loop Structure Need to know when and how to use for and while loops correctly for loops: iterate over the elements in a sequence while loops: repeat a block of code as long as a condition is insertion_sort.py Guide to Programming with Python

Functions How to write functions How to receive and return values Understand local and global variables Guide to Programming with Python

A Sample Question Write a function to translate temperate value in Fahreheit to Celcius. The function takes in two real numbers, minF and maxF through its parameters, which signify the minimum Fahrenheit and maximum Fahreheit temperature to display, as well as a third real number, step, which signifies the increment between temperatures to display. The function needs to display the Fahrenheit values between minF and maxF in increments of step in a table associated with their Celcius equivalents to the screen. Recall that the formula for converting a Fahrenheit temperature to Celcius is: C = (5/9) * (F-32) Guide to Programming with Python

Files How to use files text_file = open("read_it.txt", "r") Read from text files; readline(), readlines() Write to text files (permanent storage); write(), writelines() Need to open a file before using it, and close it when it is done How to extract information from the strings you read in from a text file! text_file = open("read_it.txt", "r") for line in text_file: line = line.strip() (name, score) = line.split() Guide to Programming with Python

A Sample Question Write a function that accepts a filename and reads in the comma-separated numbers from the text file. The function saves the numbers in a list, calculates and displays the average of the numbers, and return the list of numbers. Guide to Programming with Python

Handling Exceptions try: num = float(raw_input("\nEnter a number: ")) except(ValueError): print "That was not a number!" else: print "You entered the number", num Can add single else clause after all except clauses else block executes only if no exception is raised num printed only if assignment statement in the try block raises no exception Guide to Programming with Python

OOP How to create classes to define objects How to write methods and create attributes for objects How to instantiate objects from classes Understanding inheritance Derive new classes from existing ones Extend the definition of existing classes Override method definitions of existing classes Using modules Guide to Programming with Python

GUI Programming Events-driven programming! Work with a GUI toolkit Tkinter Create a root window and create a frame Create and use widgets Buttons; text entries; text boxes; check buttons; radio buttons Layout of the widget; grid() Create event handlers and bind (associate) events with event handlers Guide to Programming with Python

A Sample Question Guide to Programming with Python

Games Multiple choices only (no small questions) How to use livewires, override update() and constructor method in a class derived from the games.Sprite Understanding the important games objects (screen, keyboard, mouse) and classes (Sprites, Text, Message) Guide to Programming with Python

Test me Test if a function or a class works correctly by writing up a series of testing cases with different inputs Of course, you need to know what are the expected results Guide to Programming with Python