Python study notes 3-function

1. Advanced features of functions

 

    1) List comprehensions, list comprehensions are List Comprehensions, which are very simple but powerful built-in comprehensions in Python that can be used to create lists.

        eg：

    >>> list(range(1, 11))
　　[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

    >>> L = []
   >>> for x in range(1, 11): ... L.append(x * x) ...  >>> L 　　[1, 4, 9, 16, 25, 36, 49, 64, 81, 100] 

　　But the loop is too cumbersome, and the list comprehension can replace the loop with one line to generate the above list:

　　>>> [x * x for x in range(1, 11)] 　　[1, 4, 9, 16, 25, 36, 49, 64, 81, 100]


2） 生成器

3） 迭代器 


坚持跟更新