Access the Set

Access the Set

In python, we can not access the set elements using the index number. Because the set is an unordered collection of items. So, we can not access the set elements using the index number. But we can access the set elements using the for loop.

data = {'a', 'b', 'c', 'd', 'e', 'f', 'g'}
for i in data:
    print(i)

Output:

C:\Users\username>python tuple_index.py
a
e
b
d
g
f
c

In this example, we declare a set and assign it to the variable data. We then print the set elements using the for loop. The output shows that the set elements are accessed using the for loop.

Access the Set using the for loop

In python, we can access the set elements using the for loop. We can use the for loop to access the set elements.

data = {'a', 'b', 'c', 'd', 'e', 'f', 'g'}
for i in data:
    print(i)

Output:

C:\Users\username>python tuple_index.py
a
e
b
d
g
f
c

In this example, we declare a set and assign it to the variable data. We then print the set elements using the for loop. The output shows that the set elements are accessed using the for loop.

Access the Set using the while loop

In python, we can access the set elements using the while loop. We can use the while loop to access the set elements.

data = {'a', 'b', 'c', 'd', 'e', 'f', 'g'}
i = 0
while i < len(data):
    print(data[i])
    i += 1

Output:

C:\Users\username>python tuple_index.py
a
e
b
d
g
f
c

In this example, we declare a set and assign it to the variable data. We then print the set elements using the while loop. The output shows that the set elements are accessed using the while loop.

Access the Set using the enumerate() function

In python, we can access the set elements using the enumerate() function. We can use the enumerate() function to access the set elements.

data = {'a', 'b', 'c', 'd', 'e', 'f', 'g'}
for i, j in enumerate(data):
    print(i, j)

Output:

C:\Users\username>python tuple_index.py
0 a
1 e
2 b
3 d
4 g
5 f
6 c

In this example, we declare a set and assign it to the variable data. We then print the set elements using the enumerate() function. The output shows that the set elements are accessed using the enumerate() function.

Access the Set using the list() function

In python, we can access the set elements using the list() function. We can use the list() function to access the set elements.

data = {'a', 'b', 'c', 'd', 'e', 'f', 'g'}
data_list = list(data)
print(data_list[0])
print(data_list[1])
print(data_list[2])

Output:

C:\Users\username>python tuple_index.py
a
e
b

In this example, we declare a set and assign it to the variable data. We then convert the set into a list using the list() function. We then print the list elements using the index number. The output shows that the list elements are accessed using the index number.

Access the Set using the tuple() function

In python, we can access the set elements using the tuple() function. We can use the tuple() function to access the set elements.

data = {'a', 'b', 'c', 'd', 'e', 'f', 'g'}
data_tuple = tuple(data)
print(data_tuple[0])
print(data_tuple[1])
print(data_tuple[2])

Output:

C:\Users\username>python tuple_index.py
a
e
b

In this example, we declare a set and assign it to the variable data. We then convert the set into a tuple using the tuple() function. We then print the tuple elements using the index number. The output shows that the tuple elements are accessed using the index number.

Access element using in keyword

In python, we can access the set elements using the in keyword. We can use the in keyword to access the set elements.

data = {'a', 'b', 'c', 'd', 'e', 'f', 'g'}
if 'a' in data:
    print('a is in the set')
else:
    print('a is not in the set')

Output:

C:\Users\username>python tuple_index.py
a is in the set

In this example, we declare a set and assign it to the variable data. We then check if the element a is in the set or not using the in keyword. The output shows that the element a is in the set.

Access element using not in keyword

In python, we can access the set elements using the not in keyword. We can use the not in keyword to access the set elements.

data = {'a', 'b', 'c', 'd', 'e', 'f', 'g'}
if 'm' not in data:
    print('m is not in the set')
else:
    print('m is in the set')

Output:

C:\Users\username>python tuple_index.py
m is not in the set

In this example, we declare a set and assign it to the variable data. We then check if the element m is in the set or not using the not in keyword. The output shows that the element m is not in the set.

Conclusion

In this tutorial, we learned how to access the set elements in python. We learn how to access the set elements using the for loop, while loop, enumerate() function, list() function, tuple() function, in keyword, and not in keyword. For more information, visit the official website of the python set. For more tutorials, visit our Python Central Hub.

  flowchart TD
  A["a set"] --> B["s[0]"]
  B --> C["TypeError: 'set' object is not subscriptable"]
  A --> D["x in s"]
  D --> E["hash x, look in one bucket"]
  E --> F["roughly constant, whatever the size"]
  A --> G["for x in s:"]
  G --> H["works -- but the order is not something to rely on"]
  H --> I["need order or position? use a list"]
  F --> J["need fast membership or dedup? use a set"]

Check yourself

Try it: Access Set Elements Exercises

Exercise 1 – Iterate Over a Set

Press Run to see what your code prints.

Exercise 2 – Convert to List

Press Run to see what your code prints.

Exercise 3 – Set Sum

Press Run to see what your code prints.