Mixins Complete Example
Objects - Intermediate example from a Well House Consultants training course
More on Objects - Intermediate [link]
Source code: m_i_m Module: Y112
# Base class
if this.getcapacity() > that.getcapacity():
sofar = collect
for tryme in collect:
sofar = sofar.higher(tryme)
# Mixin class
this.name = name
# Two classes which will both pull in the mixin class
current.time = time
current.leng = length
current.pe = pereach
return current.leng * current.pe
current.pe = pereach
return current.pe -1
# Pull in the mixin
pubtrans.__bases__ += (label,)
pritrans.__bases__ += (label,)
# Extra comma forces a tuple rather than precedence setting ;-)
# test program
swindon = pubtrans("Swindon","07:17",2,75)
bath = pubtrans("Bath Spa","07:24",1,61)
keevil = pritrans("Keevil",5)
london = pubtrans("London Paddington","07:45",7,65)
seend = pritrans("Seend Cleeve",8)
flows = [keevil,swindon,seend,london,bath]
for flow in flows:
commuters = flow.getcapacity()
destiny = flow.getname()
print "\nLet's see is Seend or Swindon has the higher capacity"
toby = swindon.higher(seend)
print "\nLet's see which has the highest capacity of all"
toby = trans.highest(flows)
Learn about this subject
This module and example are covered on the following public courses:
* Learning to program in Python
* Python Programming
* Intermediate Python
Also available on on site courses for larger groups
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