31 lines
787 B
Python
31 lines
787 B
Python
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from enum import Enum, auto
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from decimal import Decimal
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one = Decimal(1.0)
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four = Decimal(4.0)
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twenty_four = Decimal(24.0)
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class FunctionProxy:
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"""Allow to mask a function as an Object."""
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def __init__(self, function):
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self.function = function
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def __call__(self, *args, **kwargs):
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return self.function(*args, **kwargs)
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class InterestMode(Enum):
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"""Equations to calculate interest"""
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# Interest_rate is per day, minimum time of 1 hour
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HOURSPERDAY = FunctionProxy(
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lambda borrowed, rate, hours: borrowed * rate * max(hours, one)/twenty_four
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)
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# Interest_rate is per 4 hours, minimum time of 4 hours
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HOURSPER4 = FunctionProxy(
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lambda borrowed, rate, hours: borrowed * rate * (1 + max(0, (hours-four)/four))
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)
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