28 lines
520 B
Python
28 lines
520 B
Python
#!/usr/bin/env python
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# -*- encoding: utf-8 -*-
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"""
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Topic: 定义类的多个构造函数
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Desc :
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"""
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import time
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class Date:
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"""方法一：使用类方法"""
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# Primary constructor
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def __init__(self, year, month, day):
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self.year = year
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self.month = month
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self.day = day
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# Alternate constructor
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@classmethod
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def today(cls):
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t = time.localtime()
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return cls(t.tm_year, t.tm_mon, t.tm_mday)
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a = Date(2012, 12, 21) # Primary
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b = Date.today() # Alternate
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