Python 3 range

Updated April 17, 2023

Definition of Python 3 range

Python 3 range method returns the sequence of numbers within a given range, range is a Python built-in function. When a user needs to repeat an action a certain number of times, this method is utilized. Range in Python is simply a renamed version of the Python method. To generate a sequence of numbers, use the range function. The range function is most commonly used in Python to iterate a sequence.

What is Python 3 range?

• The range method in Python is frequently used in loops, knowing how to utilize it is essential when working with Python code.
• Depending on how many arguments the user passes to the function, the user can choose where the sequence of numbers will start and stop.

There are only three arguments to the range. Range returns a list of numbers after receiving a number sequence. A list is returned by the range method.

Python 3 Range Functions

• The range function in Python aids in the generation of numerical sequences. Alternatively, the Python range function can be used to iterate elements in iterables like Lists, Tuples, Sets, Strings, and so on.
• Python range is a built-in function that returns a sequence of numbers based on the start and finishes index provided. If the start index is not specified, the index is assumed to be 0 and the value is incremented by 1 until the stop index is reached.
• In comparison to xrange, the range method consumes more memory because the resulting list must be stored.
• When working with a large amount of data, memory utilization is higher, hence code execution is slower.
• The range function in Python generates a collection of numbers on the fly, such as 0, 1, 2, 3, 4. Because the numbers may be used to index into collections like string, this is quite handy. There are several methods to use the range function.
• The most frequent form is range (n), which produces a number series beginning with 0 and extending up to but not including n, as in range (5). In other words, range (n) produces a sequence of n numbers beginning with 0. This is ideal for inserting index numbers into a string.
• The range function in Python creates a number of sequences which was starting with the specified start integer and ending with the given stop integer.
• Range function is a range object, which is made up of a sequence of integer numbers that may be iterated using a for a loop.
• We can repeat an activity a certain number of times in Python by using the range function. To create a sequence of numbers in Python 2, use the range and xrange methods.
• Xrange has been renamed to range in Python 3, and the original range method has been removed.
• When we call range with just one argument, you’ll get a list of numbers that starts at 0 and goes up while we have not specified the stop.
• When we use range with two arguments, we can choose number series ends, but also where it begins, so we don’t have to start at zero all of the time.

How to use python 3 range?

Below syntax shows how to use python 3 range function are as follows. The range function syntax contains three parameters.
Syntax –

range(start, stop, step)

Below is the parameter description syntax of python 3 range function is as follows.

1) start – This is an optional parameter while using the range function in python. An integer from which to begin counting; 0 is the default.
2) stop – The value at which the count should be stopped.
3) step – This is an optional parameter while using the range function in python. A number that represents the incremental value from the start parameter value the default is 1.

The below steps show how to use python 3 range function are as follows.

1. Pass the start and stop values in range

• While passing the start and stop values in range it will be showing the integer number in the number of series format.
• If the range, as an example (0, 3). The start and stop values are 0 and 3, respectively. Starting from the start number and ending at -1, it will generate integers. [0, 1, 2] is an example of a sequence of numbers.

Code:

for p in range(0, 3):
    print(p, end=" ")
print()

Output:

2. Pass the start, stop and step values in range

• While passing the start, stop and step values in range it will be showing the integer number in a number of series which was we have given in step values.
• The subsequent action is the increment must be specified. Range, as an example (0, 10, 2).

Code:

for p in range(0, 10, 2):
    	print (p, end=" ")
print ()

Output:

3. Use for loop to access the number

• In this step, we are using the for loop for accessing each number from the series. We are also using for loop to return the sequence of numbers from the python 3 range.
• In the below example, we are using the start value as 0 and the stop value as 10 also we have used step values as 2.

Code:

for p in range (0, 10, 2):
   	 print (p, end=" ")

Output:

Python 3 range Example

Below is the example of python 3 range are as follows.

1. Printing number using python 3 range

Code:

for p in range (5):
    	print (p, end=" ")
print ()

Output:

2. Print the number using the start and stop parameter

Code:

for p in range (10, 15):
    print (p, end=" ")

Output:

3. Print the number using start, stop and step parameter

Code:

for p in range (10, 20, 2):
    print (p, end=" ")
print ()

Output:

Conclusion

Range, in simple words, allows the user to generate a series of numbers. Range returns a list of numbers after receiving a number sequence. A list is returned by the range method. In comparison to xrange, the range method consumes more memory because the resulting list must be stored.

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