Old MathJax webview

Old MathJax webview

python!!

The Date class contains a class variable named format_str , which must be a parameterless function that returns a format string, on which the str.format() function will be called to produce a representation of a given Date object. Your job is to implement the _str_0 method properly so that, no matter what kind of format Date.format_str() function returns, the method will take that format into account. All you really need to write is one line of code!!! str Examples: >>> Date( 12, 28, 2021 ) 12/28/2021 If we wish to display only the month and the year, we can do the following: >>> Date.format_str = lambda: "{month}/{year}" >>> Date( 1, 10, 1990) 10/1990 We can change the delimiter symbol easily: = >>> Date.format_str = lambda: "{year}-{month:02d}-{day:02d}" >>> Date( 3,5, 2004) 2004-05-03