FilesExpand file tree

 master

/

Point1.py

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

86 lines (59 loc) · 1.57 KB

 master

/

Point1.py

Copy path

Top

File metadata and controls

• Code
• Blame

86 lines (59 loc) · 1.57 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

"""This module contains a code example related to

Think Python, 2nd Edition

by Allen Downey

http://thinkpython2.com

Copyright 2015 Allen Downey

License: http://creativecommons.org/licenses/by/4.0/

"""

from __future__ import print_function, division

class Point:

"""Represents a point in 2-D space.

attributes: x, y

"""

def print_point(p):

"""Print a Point object in human-readable format."""

print('(%g, %g)' % (p.x, p.y))

class Rectangle:

"""Represents a rectangle.

attributes: width, height, corner.

"""

def find_center(rect):

"""Returns a Point at the center of a Rectangle.

rect: Rectangle

returns: new Point

"""

p = Point()

p.x = rect.corner.x + rect.width/2.0

p.y = rect.corner.y + rect.height/2.0

return p

def grow_rectangle(rect, dwidth, dheight):

"""Modifies the Rectangle by adding to its width and height.

rect: Rectangle object.

dwidth: change in width (can be negative).

dheight: change in height (can be negative).

"""

rect.width += dwidth

rect.height += dheight

def main():

blank = Point()

blank.x = 3

blank.y = 4

print('blank', end=' ')

print_point(blank)

box = Rectangle()

box.width = 100.0

box.height = 200.0

box.corner = Point()

box.corner.x = 0.0

box.corner.y = 0.0

center = find_center(box)

print('center', end=' ')

print_point(center)

print(box.width)

print(box.height)

print('grow')

grow_rectangle(box, 50, 100)

print(box.width)

print(box.height)

if __name__ == '__main__':

main()