How to output range in python
What is the function of python's built-in range() function?
#It returns a series of continuously increasing integers. It works like sharding and can generate a list object. The range function most often appears in for loops and can be used as an index in for loops. In fact, it can also appear in any environment that requires a list of integers. In Python 3.0, the range function is an iterator.
How to use the python range function
There is only one parameter in the range() function, which means that a list of integers counting from 0 will be generated:
range(4) [0, 1, 2, 3] #python 返回值
In python range, when When two parameters are passed in, the first parameter is used as the starting position, and the second parameter is the ending position:
range(0,5) [0, 1, 2, 3, 4]
range() function can be filled with three parameters, the third parameter Is the step value (the step value defaults to 1):
range(0,10,3) [0, 3, 6, 9]
The parameters and results of the range function do not have to be positive numbers or increasing, such as the following two examples:
range(-4,4) [-4, -3, -2, -1, 0, 1, 2, 3] range(4,-4,-1) [4, 3, 2, 1, 0, -1, -2, -3]
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