カリー化/部分適用(currying)

Python 3.8.0 (default, Oct 23 2019, 18:51:26)
[GCC 9.2.0] on linux
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>>> xy = lambda x, y: x*y
>>> xy(10,2)
20
>>> curried_xy = lambda x: lambda y: x*y
>>> curried_xy(10)(2)
20
>>>