Merge pull request #14 from osscca/master · WPower/python-patterns@557677b · GitHub

WPower / python-patterns Public

forked from faif/python-patterns

• Notifications You must be signed in to change notification settings
• Fork 0
• Star 0

• Code
• Pull requests
• Actions
• Projects
• Wiki
• Security and quality
• Insights

Additional navigation options

Commit 557677b

Browse filesBrowse the repository at this point in the historyBrowse files

Sakis Kasampalis

committed

Merge pull request faif#14 from osscca/master

Fixed a number of pep8 violations

2 parents 7e28863 + 533c868 commit 557677b
Copy full SHA for 557677b

25 files changed

+306-197Lines changed: 306 additions & 197 deletions

File tree

Expand file treeCollapse file tree

Open diff view settings

Filter options

• abstract_factory.py
• adapter.py
• borg.py
• bridge.py
• builder.py
• chain.py
• command.py
• composite.py
• decorator.py
• facade.py
• factory_method.py
• flyweight.py
• graph_search.py
• iterator.py
• mediator.py
• memento.py
• null.py
• observer.py
• pool.py
• prototype.py
• proxy.py
• state.py
• strategy.py
• template.py
• visitor.py

Expand file treeCollapse file tree

Open diff view settings

Collapse file

‎abstract_factory.py‎

Copy file name to clipboardExpand all lines: abstract_factory.py

+12-1Lines changed: 12 additions & 1 deletion

Original file line number	Diff line number	Diff line change
@@ -4,6 +4,7 @@
4	4
5	5	import random
6	6
	7	+
7	8	class PetShop:
8	9	"""A pet shop"""
9	10
@@ -22,41 +23,51 @@ def show_pet(self):
22	23	print("It says", pet.speak())
23	24	print("It eats", self.pet_factory.get_food())
24	25
	26	+
25	27	# Stuff that our factory makes
26	28
27	29	class Dog:
28	30	def speak(self):
29	31	return "woof"
	32	+
30	33	def __str__(self):
31	34	return "Dog"
32	35
	36	+
33	37	class Cat:
34	38	def speak(self):
35	39	return "meow"
	40	+
36	41	def __str__(self):
37	42	return "Cat"
38	43
	44	+
39	45	# Factory classes
40	46
41	47	class DogFactory:
42	48	def get_pet(self):
43	49	return Dog()
	50	+
44	51	def get_food(self):
45	52	return "dog food"
46	53
	54	+
47	55	class CatFactory:
48	56	def get_pet(self):
49	57	return Cat()
	58	+
50	59	def get_food(self):
51	60	return "cat food"
52	61
	62	+
53	63	# Create the proper family
54	64	def get_factory():
55	65	"""Let's be dynamic!"""
56	66	return random.choice([DogFactory, CatFactory])()
57	67
	68	+
58	69	# Show pets with various factories
59		- if __name__== "__main__":
	70	+ if __name__ == "__main__":
60	71	shop = PetShop()
61	72	for i in range(3):
62	73	shop.pet_factory = get_factory()

Collapse file

‎adapter.py‎

Copy file name to clipboardExpand all lines: adapter.py

+8-1Lines changed: 8 additions & 1 deletion

Original file line number	Diff line number	Diff line change
@@ -2,34 +2,39 @@
2	2
3	3	import os
4	4
	5	+
5	6	class Dog(object):
6	7	def __init__(self):
7	8	self.name = "Dog"
8	9
9	10	def bark(self):
10	11	return "woof!"
11	12
	13	+
12	14	class Cat(object):
13	15	def __init__(self):
14	16	self.name = "Cat"
15	17
16	18	def meow(self):
17	19	return "meow!"
18	20
	21	+
19	22	class Human(object):
20	23	def __init__(self):
21	24	self.name = "Human"
22	25
23	26	def speak(self):
24	27	return "'hello'"
25	28
	29	+
26	30	class Car(object):
27	31	def __init__(self):
28	32	self.name = "Car"
29	33
30	34	def make_noise(self, octane_level):
31	35	return "vroom%s" % ("!" * octane_level)
32	36
	37	+
33	38	class Adapter(object):
34	39	"""
35	40	Adapts an object by replacing methods.
@@ -46,6 +51,7 @@ def __getattr__(self, attr):
46	51	"""All non-adapted calls are passed to the object"""
47	52	return getattr(self.obj, attr)
48	53
	54	+
49	55	def main():
50	56	objects = []
51	57	dog = Dog()
@@ -55,11 +61,12 @@ def main():
55	61	human = Human()
56	62	objects.append(Adapter(human, dict(make_noise=human.speak)))
57	63	car = Car()
58		- car_noise = lambda : car.make_noise(3)
	64	+ car_noise = lambda: car.make_noise(3)
59	65	objects.append(Adapter(car, dict(make_noise=car_noise)))
60	66
61	67	for obj in objects:
62	68	print("A", obj.name, "goes", obj.make_noise())
63	69
	70	+
64	71	if __name__ == "__main__":
65	72	main()

Collapse file

‎borg.py‎

Copy file name to clipboardExpand all lines: borg.py

+1-1Lines changed: 1 addition & 1 deletion

Original file line number	Diff line number	Diff line change
@@ -7,6 +7,7 @@ def __init__(self):
7	7	def __str__(self):
8	8	return self.state
9	9
	10	+
10	11	class YourBorg(Borg):
11	12	pass
12	13
@@ -33,4 +34,3 @@ class YourBorg(Borg):
33	34	print('rm1:', rm1)
34	35	print('rm2:', rm2)
35	36	print('rm3:', rm3)
36		-

Collapse file

‎bridge.py‎

Copy file name to clipboardExpand all lines: bridge.py

+9-4Lines changed: 9 additions & 4 deletions

Original file line number	Diff line number	Diff line change
@@ -1,15 +1,18 @@
1	1	# http://en.wikibooks.org/wiki/Computer_Science_Design_Patterns/Bridge_Pattern#Python
2	2
	3	+
3	4	# ConcreteImplementor 1/2
4	5	class DrawingAPI1:
5	6	def drawCircle(self, x, y, radius):
6	7	print('API1.circle at {}:{} radius {}'.format(x, y, radius))
7		-
	8	+
	9	+
8	10	# ConcreteImplementor 2/2
9	11	class DrawingAPI2:
10	12	def drawCircle(self, x, y, radius):
11	13	print('API2.circle at {}:{} radius {}'.format(x, y, radius))
12		-
	14	+
	15	+
13	16	# Refined Abstraction
14	17	class CircleShape:
15	18	def __init__(self, x, y, radius, drawingAPI):
@@ -25,16 +28,18 @@ def draw(self):
25	28	# high-level i.e. Abstraction specific
26	29	def resizeByPercentage(self, pct):
27	30	self.__radius *= pct
28		-
	31	+
	32	+
29	33	def main():
30	34	shapes = (
31	35	CircleShape(1, 2, 3, DrawingAPI1()),
32	36	CircleShape(5, 7, 11, DrawingAPI2())
33		- )
	37	+ )
34	38
35	39	for shape in shapes:
36	40	shape.resizeByPercentage(2.5)
37	41	shape.draw()
38	42
	43	+
39	44	if __name__ == "__main__":
40	45	main()

Collapse file

‎builder.py‎

Copy file name to clipboardExpand all lines: builder.py

+9-3Lines changed: 9 additions & 3 deletions

Original file line number	Diff line number	Diff line change
@@ -6,6 +6,7 @@
6	6	https://gist.github.com/420905#file_builder_python.py
7	7	"""
8	8
	9	+
9	10	# Director
10	11	class Director(object):
11	12	def __init__(self):
@@ -19,6 +20,7 @@ def construct_building(self):
19	20	def get_building(self):
20	21	return self.builder.building
21	22
	23	+
22	24	# Abstract Builder
23	25	class Builder(object):
24	26	def __init__(self):
@@ -27,21 +29,24 @@ def __init__(self):
27	29	def new_building(self):
28	30	self.building = Building()
29	31
	32	+
30	33	# Concrete Builder
31	34	class BuilderHouse(Builder):
32	35	def build_floor(self):
33		- self.building.floor ='One'
	36	+ self.building.floor = 'One'
34	37
35	38	def build_size(self):
36	39	self.building.size = 'Big'
37	40
	41	+
38	42	class BuilderFlat(Builder):
39	43	def build_floor(self):
40		- self.building.floor ='More than One'
	44	+ self.building.floor = 'More than One'
41	45
42	46	def build_size(self):
43	47	self.building.size = 'Small'
44	48
	49	+
45	50	# Product
46	51	class Building(object):
47	52	def __init__(self):
@@ -51,8 +56,9 @@ def __init__(self):
51	56	def __repr__(self):
52	57	return 'Floor: %s | Size: %s' % (self.floor, self.size)
53	58
	59	+
54	60	# Client
55		- if __name__== "__main__":
	61	+ if __name__ == "__main__":
56	62	director = Director()
57	63	director.builder = BuilderHouse()
58	64	director.construct_building()

Collapse file

‎chain.py‎

Copy file name to clipboardExpand all lines: chain.py

+7-1Lines changed: 7 additions & 1 deletion

Original file line number	Diff line number	Diff line change
@@ -1,30 +1,35 @@
1	1	# http://www.testingperspective.com/wiki/doku.php/collaboration/chetan/designpatternsinpython/chain-of-responsibilitypattern
2	2
	3	+
3	4	class Handler:
4	5	def successor(self, successor):
5	6	self.successor = successor
6	7
	8	+
7	9	class ConcreteHandler1(Handler):
8	10	def handle(self, request):
9	11	if request > 0 and request <= 10:
10	12	print("in handler1")
11	13	else:
12	14	self.successor.handle(request)
13	15
	16	+
14	17	class ConcreteHandler2(Handler):
15	18	def handle(self, request):
16	19	if request > 10 and request <= 20:
17	20	print("in handler2")
18	21	else:
19	22	self.successor.handle(request)
20	23
	24	+
21	25	class ConcreteHandler3(Handler):
22	26	def handle(self, request):
23	27	if request > 20 and request <= 30:
24	28	print("in handler3")
25	29	else:
26	30	print('end of chain, no handler for {}'.format(request))
27	31
	32	+
28	33	class Client:
29	34	def __init__(self):
30	35	h1 = ConcreteHandler1()
@@ -38,5 +43,6 @@ def __init__(self):
38	43	for request in requests:
39	44	h1.handle(request)
40	45
41		- if __name__== "__main__":
	46	+
	47	+ if __name__ == "__main__":
42	48	client = Client()

Collapse file

‎command.py‎

Copy file name to clipboardExpand all lines: command.py

+3-2Lines changed: 3 additions & 2 deletions

Original file line number	Diff line number	Diff line change
@@ -1,5 +1,6 @@
1	1	import os
2	2
	3	+
3	4	class MoveFileCommand(object):
4	5	def __init__(self, src, dest):
5	6	self.src = src
@@ -32,5 +33,5 @@ def undo(self):
32	33
33	34	# and can also be undone on will
34	35	for cmd in undo_stack:
35		- undo_stack.pop().undo() # Now it's bar.txt
36		- undo_stack.pop().undo() # and back to foo.txt
	36	+ undo_stack.pop().undo() # Now it's bar.txt
	37	+ undo_stack.pop().undo() # and back to foo.txt

Collapse file

‎composite.py‎

Copy file name to clipboardExpand all lines: composite.py

+18-13Lines changed: 18 additions & 13 deletions

Original file line number	Diff line number	Diff line change
@@ -19,18 +19,20 @@ def normalize(val):
19	19	to a Python object """
20	20
21	21	if val.find('-') != -1:
22		- val = val.replace('-','_')
	22	+ val = val.replace('-', '_')
23	23
24	24	return val
25	25
	26	+
26	27	def denormalize(val):
27	28	""" De-normalize a string """
28		-
	29	+
29	30	if val.find('_') != -1:
30		- val = val.replace('_','-')
	31	+ val = val.replace('_', '-')
31	32
32	33	return val
33	34
	35	+
34	36	class SpecialDict(dict):
35	37	""" A dictionary type which allows direct attribute
36	38	access to its keys """
@@ -64,24 +66,25 @@ def __setattr__(self, name, value):
64	66	# New attribute
65	67	self[name] = value
66	68
	69	+
67	70	class CompositeDict(SpecialDict):
68	71	""" A class which works like a hierarchical dictionary.
69	72	This class is based on the Composite design-pattern """
70		-
	73	+
71	74	ID = 0
72		-
	75	+
73	76	def __init__(self, name=''):
74	77
75	78	if name:
76	79	self._name = name
77	80	else:
78		- self._name = ''.join(('id#',str(self.__class__.ID)))
	81	+ self._name = ''.join(('id#', str(self.__class__.ID)))
79	82	self.__class__.ID += 1
80		-
	83	+
81	84	self._children = []
82	85	# Link back to father
83	86	self._father = None
84		- self[self._name] = SpecialDict()
	87	+ self[self._name] = SpecialDict()
85	88
86	89	def __getattr__(self, name):
87	90
@@ -101,7 +104,8 @@ def __getattr__(self, name):
101	104	return child
102	105	else:
103	106	attr = getattr(self[self._name], name)
104		- if attr: return attr
	107	+ if attr:
	108	+ return attr
105	109
106	110	raise AttributeError('no attribute named %s' % name)
107	111
@@ -306,17 +310,18 @@ def addChild2(self, child):
306	310	self._children.append(child)
307	311	self.__setChildDict(child)
308	312
309		- if __name__=="__main__":
	313	+
	314	+ if __name__ == "__main__":
310	315	window = CompositeDict('Window')
311	316	frame = window.addChild('Frame')
312	317	tfield = frame.addChild('Text Field')
313		- tfield.setAttribute('size','20')
	318	+ tfield.setAttribute('size', '20')
314	319
315	320	btn = frame.addChild('Button1')
316		- btn.setAttribute('label','Submit')
	321	+ btn.setAttribute('label', 'Submit')
317	322
318	323	btn = frame.addChild('Button2')
319		- btn.setAttribute('label','Browse')
	324	+ btn.setAttribute('label', 'Browse')
320	325
321	326	# print(window)
322	327	# print(window.Frame)

0 commit comments

Comments

0 (0)