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IT 212 -- Midterm Review Guide

Bring to Midterm:

• Calculator (cell phone calculator okay)
• One 8.5 × 11 page of crib notes, both sides. A computer printed page of notes is okay.
• The code you submitted for each of projects 1, 2, and 3a and labs 1 and 2.
• These tables: Hex Digits Table, Powers of Two Table, ASCII Table -- Printable, Builtin Methods

Midterm Question Types:

• (1) Multiple choice with reasons, (2) predict output of script, (3) correct errors in Python scripts, (4) convert traditional test script to unit test script, (5) extract method from a script.

Definitions:

• Datatypes (str, int, float, bool),  base prefixes (0x, 0b), string escape characters ( \n, \t, \a, \ \ , \",  \', \s), operators (+, -, *, /, %, ==, <, >, <=, <=, !=, and, or), bitwise operators (&, |), comment ( # ), data representations (binary, hex, packed decimal, binary ASCII), F-strings, format specifiers for use in the str format method (d, x, X, b, s, field width, digits after decimal), input/output (print, input, open), TextIOWrapper methods (close, readline, write), control structures (if..elif, while, for), string delimiters ('..', "..", '''..''', """.."""),  lists, list index, class, object, class variable, instance variable, dunder methods (__init__, __str__, __repr__), instance method, standalone method, accessibility (public, private), testing (traditional, unit testing class with self.assertEqual), UML diagram.

Methods

• Be familiar the methods in the Builtin Methods document.

Loops

1. Indefinite loops (while loops). Example:
   

   i = 1
   while i <= 100:
       print(i)
       i += 1  
   

2. Definite Loops (for loops). Examples:
   

   for i in range(1, 101):
       print(i)
   

   or
   

   for n in [2, 3, 5, 7]:
       print(n)
   

Be Able To:

1. Answer multiple choice questions Give an optional reason or show your work for partial credit.
2. Construct a variable trace and predict the output for a Python script.
3. Find errors in a Python script.
4. Put the lines of a Python script in the correct order for a script that has its lines shuffled.
5. Given a Python script, extract a standalone method and write traditional and unit test scripts (test1.py and test2.py) to test the method.
6. Given a traditional test script for a class, convert it to a unit test script.
7. Convert an int value among these representations: decimal, binary, hex. The maximum value will be 127 decimal (0x7f hex, 0b01111111 binary).
8. Perform bitwise operations bitwise and ( & ), bitwise or ( | ), and bitwise exclusive or ( ^ ).
9. Interpret a hex dump, similar to Problem 5 of Project 1, that contains data expressed in one of these formats: ASCII string, packed decimal, hex integer, bit map.