• function -- 函数，有两个参数
• iterable -- 一个或多个序列
• 返回迭代器
  
• map(lambda x: x ** 2, [1, 2, 3, 4, 5]) # 使用 lambda 匿名函数 [1, 4, 9, 16, 25]
  
• map(lambda x, y: x + y, [1, 3, 5, 7, 9], [2, 4, 6, 8, 10]) [3, 7, 11, 15, 19]
  

class map(object)

 |  map(func, *iterables) --> map object

 |  

 |  Make an iterator that computes the function using arguments from

 |  each of the iterables.  Stops when the shortest iterable is exhausted.

 |  

 |  Methods defined here:

 |  

 |  __getattribute__(self, name, /)

 |      Return getattr(self, name).

 |  

 |  __iter__(self, /)

 |      Implement iter(self).

 |  

 |  __new__(*args, **kwargs) from builtins.type

 |      Create and return a new object.  See help(type) for accurate signature.

 |  

 |  __next__(self, /)

 |      Implement next(self).

 |  

 |  __reduce__(...)

 |      Return state information for pickling.