Presentation is loading. Please wait.

Presentation is loading. Please wait.

The upper-left corner of a graphics window has the location of: A.0,0 B.200,0 C.0,200 D.200,200.

Similar presentations


Presentation on theme: "The upper-left corner of a graphics window has the location of: A.0,0 B.200,0 C.0,200 D.200,200."— Presentation transcript:

1 The upper-left corner of a graphics window has the location of: A.0,0 B.200,0 C.0,200 D.200,200

2 An object is essentially a more complex variable A.True B.False

3 Objects are complex data types that contain: A.Only variables B.Only functions C.Both variables and functions

4 Ask the class What's the difference between the following: – from graphics import * – import graphics

5 What is the value of student1.id? student1 = Student() student1.id = 5 student2 = student1 student2.id = A.Undefined B.5 C.7 D.Something Else

6 In Python conditions, *not equals* is written as "/=" True False

7 Strings are compared by lexographic ordering True False

8 A single try statement can catch multiple kinds of errors True False

9 There is usually only one correct solution to a problem involving decision structure True False

10 The condition x <= y <= z is valid True False

11 Input validation means prompting a user when input is required True False

12 A statement that controls the execution of other statements is called A.Boss structure B.Super structure C.Control structure D.Branch

13 In Python, the body of a decision is indicated by A.Indentation B.Parenthesis C.Curly braces D.A colon

14 a and (b or c) == (a and b) or (a and c) True False

15 if a > b: if b > c: print("Spam Please!") else: print("It's a late parrot!") elif b > c: print("Cheese Shoppe") if a >= c: print("Cheddar") elif a < c: print("Gouda") elif c == b: print("Swiss") … else: print("Trees") if a == b: print("Chestnut") else: print("Larch") print("Done") Consider with the following variables: a = 3, b = 5, c = 2

16 not(a or b) == (not a) or not(b) True False

17 True or False True False

18 (True or x) == True True False

19 (False and x) == False True False

20 (True or False) == True True False

21 What does this probably do? obj.set_water_level(5)

22 What does "self" mean?

23 "Self is a reference to the calling object." Example: d1.roll() – d1 will be "self"

24 What method gets called automatically every time we create an instance of a new class?

25 Where do we declare instance (local) variables in a class?

26 Why don't we pass a "self" in the following example? class Foo: def __init__(self, bar): self.value = bar f1 = Foo(5) f1.bar(5)

27 Why shouldn't we directly modify class variables?

28 Because we might have special functionality in our set_var(self, value): function that will not get called otherwise.

29 Give an example of a properly named "accessor" method

30 get_foo(self):

31 Give an example of a properly named "mutator" method

32 set_foo(self, value):


Download ppt "The upper-left corner of a graphics window has the location of: A.0,0 B.200,0 C.0,200 D.200,200."

Similar presentations


Ads by Google