I have a class which calculates some salary allowances. Instead of a blind
calculation I need to check some conditions before I can return the calculated
amount. Like if all the allowances calculated till now plus the one in progress
must not exceed the total salary(this may occur since these allowances are a
percentage of basic pay). Below is a sample code FYI
class CompanySalaryBreakUpRule(object):
'''Class to calculate the various salary components.
This class is inherited by individual company classes whom implement salary
calculations.
Various component calculations are implemented as @property and hence be
accessed as class properties.
'''
grossPay = 0.0
remainingAmount = 0.0
def checkValid(self, func):
from functools import wraps
@wraps(func)
def wrapper(self, *args, **kwargs):
allowanceToCheck = func(self, *args, **kwargs)
if allowanceToCheck > self.remainingAmount:
allowanceToCheck = self.remainingAmount
else:
self.remainingAmount = self.remainingAmount - allowanceToCheck
return allowanceToCheck
return wrapper
@property
@checkValid
def dearnessAllowance(self):
return self.basic * 0.2 # we have a function that calculates basic pay
But executing this raises an exception
@checkValid
TypeError: checkValid() takes exactly 2 arguments (0 given)
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