## self.pressure = pressure
def circumference(self):
'adjusted perimeter for width of tyre'
return 1.25 * Circle.circumference(self)
t = Tyre(22)
print 'a tire of radius', 22
print 'has an area %.2f' % t.area()
print 'and a circumference %.2f' % t.circumference()
# Customer 3: National trucking company
print 'a hill of with 7 degree incline is a'
print '%d%% grade' % Circle.angle_to_grade(7)
print
# Customer 4: International graphics company
# We have money and power!
# We build circles NOT with radius
# but with a bounding box diagonal
c = Circle.from_bbd(10)
print 'a circle with bounding box diagonal 10'
print 'has a radius %.2f' % c.radius
print 'and an area %.2f' % c.area()
print
# Customer 5: the government
# We like to micromanage
def customer_3():
angle = 7.0
print 'a hill with {:.0f} degree incline'.format(angle)
print 'is a {:.0f}% grade'.format(Circle.angle_to_grade(7))
t = Tire(30)
print 'A tire with an inner radius of', t.radius
print 'has an inner area of', t.area()
print 'and outer perimeter of', t.perimeter()
print
m = MonsterTire(30)
print 'A monster tire with an inner radius of', m.radius
print 'has an inner area of', m.area()
print 'and outer perimeter of', m.perimeter()
print
## National Trucking Company ###################################
print u'An inclinometer reading of 5\N{degree sign}'
print 'is a %.1f%% percent grade' % Circle.angle_to_grade(5)
print
## National Graphics Company ###################################
c = Circle.from_bbd(30)
print 'A circle with bounding box diagonal 30'
print 'has a radius of', c.radius
print 'an area of', c.area()
print 'and a perimeter of', c.perimeter()
print
## U.S. Government #############################################
## ISO 10666: No circle software shall compute area directly from
## instance data. MUST first call perimeter() and infer the instance
t = Tire(30)
print 'A tire with an inner radius of', t.radius
print 'has an inner area of', t.area()
print 'and outer perimeter of', t.perimeter()
print
m = MonsterTire(30)
print 'A monster tire with an inner radius of', m.radius
print 'has an inner area of', m.area()
print 'and outer perimeter of', m.perimeter()
print
## National Trucking Company #######################################
print u'An inclinometer reading of 5\N{degree sign}',
print 'is an %.1f%% grade.' % Circle.angle_to_grade(5)
print
# National Graphics Company ##################################
c = Circle.from_bbd(30)
print 'A circle with the bounding box diagonal of 30'
print 'has a radius of', c.radius
print 'an area of', c.area()
print 'and a perimeter of', c.perimeter()
print
## U.S. Government ###########################################
## ISO 10666: No circle software shall compute the area
## directly from instance data. It MUST first call
which instance (usually "self")
'''
# a tire with 22 inch rim
t = Tire(22)
print 'A tire of radius', t.radius
print 'has an area {:.2f}'.format(t.area())
print 'and circumference {:.2f}'.format(t.circumference())
print
# Customer 4: National Trucking Company
print 'an incline of 7 degrees'
print 'is a {:.0f} grade'.format(Circle.angle_to_grade(7))
print
#Customer 5: International Graphics company
# We have money and power!
# We build circles NOT with radius,
# But with a bounding box diagonal
# r = d / sqrt(r) or d^2 = 2r^2
c = Circle.from_bbd(5)
print 'a circle with diagonal 5'
print 'has a radius {:.2f}'.format(c.radius)
print 'and an area {:.2f}'.format(c.area())
print
# Overriding -- don't call the parent method
# Extending -- call the parent method and then modify it's result
return Circle.perimeter(self) * self.RUBBER_RATIO
__perimeter = perimeter
t = Tire(30)
print 'A tire with an inner radius of', t.radius
print 'and inner area of', t.area()
print 'and an outer perimeter of', t.perimeter()
print
## National Trucking Company #####
print u'A 5\N{DEGREE SIGN} degree inclinometer reading',
print 'is %.1f%% grade' % Circle.angle_to_grade(5)
print
## National Graphic Company #########
c = Circle.from_bbd(40)
print 'A circle with a bounding box diagonal of 40'
print 'has a perimeter of', c.perimeter()
print 'and a radius of', c.radius
print 'and an area of', c.area()
print
## US Government ###########
# ISO 10111: All circle software SHALL NOT access the radius directly.
class Tire(Circle):
def perimeter(self):
'Perimeter adjusted for width of tire'
return Circle.perimeter(self) * 1.25
t = Tire(22)
print 'a tire with radius', t.radius
print 'has an area %.0f' % t.area()
print 'and a perimeter %.0f' % t.perimeter()
print
# Customer 4: national trucking company
print 'a hill with inclinometer reading 7 degrees'
print 'is a percent grade: %.2f%%' % Circle.angle_to_grade(7)
print
# Customer 5: international graphics company
# We have money and power!
# We want the constructor to be based on the bounding box diagonal!
c = Circle.from_bbd(10)
print 'a circle with a bounding box diagonal 10'
print 'has a radius %.2f' % c.radius
print 'and an area %.2f' % c.area()
print
# Customer 6: the Feds
# We like to micromanage:
# we will tell you not just WHAT to do, but also HOW to do it
class MonsterTire(Tire):
__slots__ = []
RUBBER_RATIO = 1.50
t = Tire(30)
print 'A tire with an inner raius of', t.radius
print 'has an area of', t.area()
print 'and has an outer perimeter of ', t.perimeter()
print
t = MonsterTire(30)
print 'A tire with an inner raius of', t.radius
print 'has an area of', t.area()
print 'and has an outer perimeter of ', t.perimeter()
print
## National Trucking Company ##############################################
print u'An inclinometer reading of 5\N{degree sign}',
print 'is a %f%% grade' % Circle.angle_to_grade(5)
print
## US Gov't ###############################################################
# ISO 10666: No circle software shall compute an area directly from
# instance data. It MUST first call perimeter and infer the data indirectly.
def perimeter(self):
'adjusted perimeter for width of tire'
return Circle.perimeter(self) * 1.25
__perimeter = perimeter
t = Tire(22)
print ' tire with radius 22'
print 'has an area %.2f' % t.area()
print 'and a perimeter %.2f' % t.perimeter()
print
# Customer 4: National Trucking Co.
print 'an incline of 7 degres'
print 'is a %d percent grade' % Circle.angle_to_grade(7)
print
# Customer 5: International Graphics Co.
print 'We have money and power'
print 'We build circles with counding boxes not radius'
c = Circle.from_bdd(10)
print 'a Circle with a bounding box diagonal 10'
print 'has a radius', c.radius
print 'and an area', c.area()
print
# Customer 6: Federal Government
# We like to micromanage!
# We will tell you not only WHAT to do
# But also HOW to do it