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Python program to convert a List to Set

To convert a Python List to Python Set, you can use the methods and code examples explained in this post.
# define a list
my_list = ['a', 'b', 'c', 'd', 'e']

# use set function to convert
result_set = set(my_list)

# print the result
print(result_set)
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Output

{'c', 'b', 'e', 'd', 'a'}

We are using the set() function in the above code example to convert a Python List to a Set.

Use set() function to make Set from List

This is the easiest method to convert a List to Python Set. We will be using the set() function of Python to convert it. The basic syntax is as below.

Syntax

set(List)

The set() function takes List as a parameter and converts it to Set.

Code Example

# define a list
my_list = [10, 20, 30, 40, 50, 60, 70]

# use set function to convert
result_set = set(my_list)

# print the result
print(result_set)

Output

{70, 40, 10, 50, 20, 60, 30}

Using List Comprehension

We can also use List Comprehension to convert a List to a Python Set. We are explaining it by using the below code example.

Code Example

# define a list
my_list = [10, 20, 30, 40, 50, 60, 70]

# use list comprehension to convert to set
result_set = {item for item in my_list}

# print the result
print(result_set)

Output

{70, 40, 10, 50, 20, 60, 30}

Use Python For loop to convert List to Set

If you do not want to use any function or modules to convert a List to Python Set then you can use Python For loop. Beloe is a code example.

# define a list
my_list = [10, 20, 30, 40, 50, 60, 70]

# use for loop to convert List to Set
result = set()
for item in my_list:
  result.add(item)

# print the result
print(result)
# define a list
my_list = [10, 20, 30, 40, 50, 60, 70]

# use {} for List to Set conversion
result = {*my_list}

# print the result
print(result)

# -> {70, 40, 10, 50, 20, 60, 30}
You can also use {} - Curley Brackets to convert a List to a Set. In the above code example, we have defined a list - my_list that contains multiple elements. We are converting it to a List using {}.
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