range() Function Of Python🐍

In this example, In[24] there is an odd number defined by step=2, In[25] it has the difference of 3, In[26] again range is defined by 2 numbers differences and in the last example, In[27] step=1.5 which is float value so Python returns an error message. In case of the step, value is 0 then again it will generate an error message.

• All the arguments: start, stop and step are integer only. Non-integer or other data types are not allowed to be used in range() function.
• All these three arguments might be positive or negative.
• range() function includes only integer numbers in its output.
• step value is 0- zero then it will give an error message. By default, it is 1 or more than 1.

Iteration with for loop

In this example range is 9 with the multiplication of this loop 9 times.

With using Nested For loops we can create pattern programming for numbers, asterisks *, Pyramids, and diamond shapes.

This image will give us the basic idea for the pattern programming and how to start with it.

To generate patterns there are some basic structures which must be followed by the user,

• There is nested for loop is used whereas the parent loop defines the rows and child loop defines the columns of the pattern.
• print() function is used to print the pattern in pyramid, Dimond, asterisk, and number form.
• The child loop depends on the value of the parent loop.
• add a new line after each row with using: print("\n")

The following are some examples that will help us to generates patterns with range() function and for loop.

In this example, we can see there is the code for half pyramid pattern.

for i and for j are nested for loops.

input() function is used to take the number of rows that we inserted as 6 which will be stored in i and iteration implemented with nested j for loop, where i is incremented by 1 up to a range of the value 6 rows.

print("\r") is for enter, otherwise use print("\n") for the enter with one row.

This is the example of a number pattern with range(7). In the outer for loop start=1,stop is the value of ending number which is 7. Inner for loop executes the code of iteration until 7 and print the rows and columns in the form of triangle shape with the addition of 1 in each row.

Let's print characters in this pattern,

ASCII values are used to print characters with chr() function for range() functions.

In this example range is 7 where alphabets and letters are printed in 7 rows. The ASCII value 65 which will give us the value of A as the start argument stored in asciiNumber_start variable.

chr() functions is used to print characters in range() function.

ASCII 65 to 90 is capital A to Z remaining 91 and 92 are [ and \ respectively.

Note
More examples are attached in the zip file: range_func_Python.zip, for the different patterns with range() function.

• https://data-flair.training/blogs/python-range-function/
• https://pynative.com/print-pattern-python-examples/

In this article, we learned about the range() functions with different patterns of the structures. There are main other usages like arguments in range() function and iteration in for loop with range() function discussed with detailed examples and images. range() function is specifically used with integers but here we have learned to use this function with characters. We will look forward to Numpy where we use this range() function with the float arguments.