Python

Python Set to String

In python, a set is a collection of unique objects. The string signifies Unicode characters. Python lacks a built-in character data type, which is why a single char forms a string with a size of 1. In this guide, we will talk about how to transform a Python set into a string. The set is a data type that stores inimitable objects, while the string is an order of characters encircled within double or single quotes. Here, we have various example codes to understand the transformation between set to string and vice versa. If you want to convert a set to a string, we use repr(), join(), map(), and various other built-in methods. Let’s run the example codes on Spyder Compiler to understand the concept of conversion of a set to string.

Example 1:

In our first program code, we explain the functionality of the repr() method. In Python, repr() is a built-in method that yields a printable illustration of the given item. This is a distinctive technique that is used to signify a class’s objects as a string. However, it can also be used to calculate the “official” string representation of an item, and typically it can be used for debugging. We can also use ast.literal_eval() function and pass it into the repr() method, which returns a set with original objects.

Come let’s illustrate our first example code. In our first illustration, we define a set of vegetables. After this, we state two print statements that display the original set with its type. Afterward, we call the repr() function, which takes the original set as a parameter and assigns it to a string variable. Then we pass this variable into the print function, which displays the resultant string with its type.

veg_set = {'Brinjal', 'Carrot', 'Pea', 'Potato', 'Cabbage'}

print(veg_set)

print(type(veg_set))

print("Set after conversion")

new_str = repr(veg_set)

print(new_str)

print(type(new_str))


Now let’s move to its execution. Save and execute the program and view how the repr() method converts the set into a python string.

Example 2:

In our second program code, we explain the functionality of the join() method. In Python, join() is a built-in function in which the elements of order have been combined. We use the same Spyder code file to illustrate our second program code. In our second illustration, we define a set of countries. After this, we state two print statements that display the original set with its type. Afterward, we call the join() function, which takes the original set as a parameter and assigns it to a string variable. Then we pass this variable into a print function which displays the resultant string with its type.

coun_set = {'UAE', 'UK', 'DUBAI', 'ENGLAND', 'CANADA'}

print(coun_set)

print(type(coun_set))

print("Set after conversion")

new_str = " ".join(coun_set)

print(new_str)

print(type(new_str))


Now let’s move to dry run our second program. Save and execute the program and view how the join() method converts the set into a python string.

Example 3:

In our third program code, we explain the functionality of both the join() and map() methods. In our previous section, we already discussed the working of the join() function, but here the thing is what does map() function do with the join() method. If the set contains an integer, float, or any non-string elements, then we use the map() function because the join() function can’t handle integer numbers and generates a “TypeError.”

So, to overcome the issue, we use map() with join(). Let’s move to our example code. Here, we define a set that contains integer, float, and strings. After this, we state two print statements that display the original set with its type. Afterward, we call the join() command with map() function, which takes the original set as a parameter and assigns it to a string variable. Then we pass this variable into a print function which displays the resultant string with its type.

mix_set = {'UAE', '0.09', 'XYZ', '123', 'CANADA'}

print(mix_set)

print(type(mix_set))

print("Set after conversion")

new_str = " ".join(map(str,mix_set))

print(new_str)

print(type(new_str))


Now, let’s dry run our last program and view how the join() and map() method works simultaneously.

Conclusion:

So, in this guide, we learned how to convert the set to python string. We used repr(), join(), and map() functions to transform sets to strings. You can use any example to complete your desired work.

About the author

Kalsoom Bibi

Hello, I am a freelance writer and usually write for Linux and other technology related content