LPTHW Exercises 27 - 34

(12/2/13 -- 6:30pm PST)

Control Flows

Review

Known Python data types?
What are functions? How do we define and call them?
What is scope? Local? Global?

Review Problem Set

See "problem_set_one.py" in the IDE

Exercise 27: Truth Expressions

bool() --> convert a data type into a Bolean value
True -->  Boolean data type.  On switch (declares something is truth)

False -->  Boolean data type.  Off switch (declares something is false)

and  -->  Operator.  Produces True if ALL operands are true, else False
or -->  Operator.  Produces True if ANY operands are true, else False

not -->  Operator.  Produces inverse Boolean (not True == False)

== -->  Operator.  Does equal (5 ==3)!= -->  Operator.  Does not equal (5 !=3)

>= -->  Operator.  Greater than OR equal to (4 >=3)

<= -->  Operator.  Less than OR equal to (2 <=3)

Problem Set: Truth Tables

See "problem_set_two.py" in the IDE

Exercise 28: Boolean Logic Expressions

not (1 == 1 and 0 != 1)
not (10 == 1 or 1000 == 1000)

not ("testing" == "testing" and "Zed" == "Cool Guy")

1 == 1 and not ("testing" == 1 or 1 == 0)

"chunky" == "bacon" and not (3 == 4 or 3 == 3)

3 == 3 and not ("testing" == "testing" or "Python" == "Fun")

Find an equality test (== or !=) and replace it with its truth.

Find each and/or inside parentheses and solve those first.

Find each not and invert it.

Find any remaining and/or and solve it.