range函数python_range（）函数以及Python中的示例

女爷i 2023-03-05 12:42 29阅读 0赞

range函数python

## Python range()函数 **(**Python range() function**)** ##

The **range()** is a built-in function in Python which returns the sequence of values. It is used where we need to perform a specific action for a limited number of times. In general, if we write range starting from a value i and end up to the value j then we will get a sequence i, i+1 up to j-1.

**range()**是Python中的内置函数，它返回值的序列。 它用于需要有限次数执行特定操作的地方。 通常，如果我们写一个从值i开始到值j的范围，那么我们将得到一个序列i ， i + 1到j-1 。

**Syntax of range() function:**

**range()函数的语法：**

range(start, end, step)

It generally takes three arguments which are the following,

通常需要以下三个参数，

*  start: It is an integer from which the sequence has to start that is starting integer of the sequence of the integer.
    
    start ：它是必须从其开始的整数，它是整数序列的起始整数。
 *  end: It is an integer before which the sequence of integers is to be generated. Generally, if we provide an integer j then it generates sequence up to j-1.
    
    end ：它是一个整数，在此之前将生成整数序列。 通常，如果我们提供整数j，则它会生成最多j-1的序列。
 *  step: It is used to determine the difference or increment between each integer in the sequence.
    
    step ：用于确定序列中每个整数之间的差或增量。

There are three-way by which we can call the range in the program which is the following,

我们可以通过以下三种方式在程序中调用范围：

1.  **range(end)**:
    
    **范围(结束)** ：
    
    We will give only one argument ending in the
    
    我们只会给出一个以
    
    **range()** function when we want to start the sequence of the integer with 0. If we give the value of end is j the this is seen as a sequence whose upper limit is j and the lower limit is 0 and step is 0.
    
    当我们想以0开头整数序列时，会使用**range()**函数。如果给定end的值为j，则这将被视为一个序列，其上限为j，下限为0，step为0。
2.  **range(start, end)**:
    
    **范围(开始，结束)** ：
    
    When the user decides to generate the sequence starting with a specific integer and also end before a specific integer then they call the range function with the two-argument. When the user gives the value of start then it works like the range function with one argument i.e
    
    当用户决定生成以特定整数开头并以特定整数结尾的序列时，他们将使用两个参数调用range函数。 当用户提供start的值时，它的工作方式类似于带有一个参数的range函数，即
    
    **range(end)** because the **range() function** by default starts the sequence with zero.
    
    **range(end)，**因为默认情况下**range()函数**从零开始序列。
3.  **range(start, end, step)**:
    
    **范围(开始，结束，步骤)** ：
    
    When we want to generate a sequence where we skip or increment the sequence integer by a value other than 1 that is we want a kind of arithmetic progression which have a common difference greater than 1 then we call the
    
    当我们要生成一个序列时，我们将序列整数跳过或增加一个非1的值，即我们想要一种算术级数，其公有差异大于1，则我们称
    
    **range() function** with the three arguments. If we call a **range() function** with no step then by default it goes for 1.
    
    **具有**三个参数的**range()函数** 。 如果我们不带任何步长调用**range()函数** ，则默认情况下它为1。

Let's see an example by which we understand it in a better way.

让我们看一个例子，通过它我们可以更好地理解它。

**Program:**

**程序：**

#call range() with one argument
    print('First sequence:')
    for k in range(10):
        print(k,end=' ')
    print()
    
    #call range() with two argument
    print('Second sequence:')
    for k in range(2,10):
        print(k,end=' ')
    print()
    
    #call range() with two argument
    print('Third sequence:')
    for k in range(2,20,1):
        print(k,end=' ')
    print()
    
    #call range() with negative step
    print('Fourth sequence:')
    for k in range(20,1,-2):
        print(k,end=' ')
    print()

**Output**

**输出量**

First sequence:
    0 1 2 3 4 5 6 7 8 9 
    Second sequence:
    2 3 4 5 6 7 8 9 
    Third sequence:
    2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 
    Fourth sequence:
    20 18 16 14 12 10 8 6 4 2

> 翻译自: [https://www.includehelp.com/python/range-function-with-example.aspx][https_www.includehelp.com_python_range-function-with-example.aspx]

range函数python

[https_www.includehelp.com_python_range-function-with-example.aspx]: https://www.includehelp.com/python/range-function-with-example.aspx