擅长:python、mysql、java
<p>将构造函数方法的位置参数转换为具有有用默认值的命名可选参数:</p>
<pre><code>class User:
def __init__(self, Policy=Null, Level=1,
StartDate="2016-01-01", EndDate="2016-12-31",
StartTime="00:00", EndTime="23:59",
Name="UNKNOWN", Mobile=""):
self.Policy = Policy
self.Level = Level
self.StartDate = StartDate
self.EndDate = EndDate
self.StartTime = StartTime
self.EndTime = EndTime
self.Name = Name
self.Mobile = Mobile
</code></pre>