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OO demo - multiple classes, inheritance, test program
Objects - Intermediate example from a Well House Consultants training course
More on Objects - Intermediate [link]
Source code: personx.py Module: Y112
"""Base class person and subclasses applicant and
staff for the demo during a course. There's also a test harness / program at the end of this code which will only get run if you call up this file directly rather than through an "import" or "from" """ class person(object): """ all about a person """ def getname(current): """ getname docs """ return current.name def hasbirthday(current): current.years += 1.0 def getypa(current): return current.years / current.al class applicant(person): def __init__(current,name,age,alevels): current.name = name current.years = float(age) current.al = int(alevels) def getworklength(current): return 0 class staff(person): def __init__(current,name,age,alevels,endurance): current.name = name current.years = float(age) current.al = int(alevels) current.yw = int(endurance) def getypa(current): return current.years / current.al -2.0 def getworklength(current): return current.yw def person_factory(info): line = info.strip() fields = line.split(" ") if fields[2].isdigit(): name = fields[3:] n = " ".join(name) result = staff(n,fields[1],fields[0],fields[2]) else: name = fields[2:] n = " ".join(name) result = applicant(n,fields[1],fields[0]) return result if __name__ == "__main__": choice = [] fh = open("ufd") for record in fh.readlines(): print record choice.append(person_factory(record)) for option in choice: print option.__class__.__name__ print option.getname(),option.getypa() print option.getworklength() """ Sample output wizard:pyoo graham$ python personx.py 3 21 Bob Smith 4 54 Barbara Widdicombe 1 80 Fred Dibnah 5 25 7 Noel Bunton 3 37 Jenny Wren 3 32 0 Jenny Jownes applicant Bob Smith 7.0 0 applicant Barbara Widdicombe 13.5 0 applicant Fred Dibnah 80.0 0 staff Noel Bunton 3.0 7 applicant Jenny Wren 12.3333333333 0 staff Jenny Jownes 8.66666666667 0 wizard:pyoo graham$ """ 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 Books covering this topic
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This example comes from our "Objects - Intermediate" training module. You'll find a description of the topic and some
other closely related examples on the "Objects - Intermediate" module index page.
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