1def swallow(name = None, airspeed = None, coconuts = None): 2 """ 3 >>> swallow(name = "Brian") 4 This swallow is called Brian 5 >>> swallow(airspeed = 42) 6 This swallow is flying at 42 furlongs per fortnight 7 >>> swallow(coconuts = 3) 8 This swallow is carrying 3 coconuts 9 """ 10 if name is not None: 11 print u"This swallow is called", name 12 if airspeed is not None: 13 print u"This swallow is flying at", airspeed, u"furlongs per fortnight" 14 if coconuts is not None: 15 print u"This swallow is carrying", coconuts, u"coconuts" 16