Python Sets

Sets

Set is a collection of unordered items separated by comma and enclosed within curly brackets.

Sets are unindexed and will not allow duplicate items.

EntitySet = {"Body", "Face", "Edge"}
print(EntitySet)

Output
{'Face', 'Edge', 'Body'} 

Use len() method to find the number of items in the set.

Add Items

add an item to set.

EntitySet = {"Body", "Face"}
EntitySet.add("Edge")
print(EntitySet)

Output
{'Face', 'Edge', 'Body'}

update()

add multiple items to set.

EntitySet = {"Body", "Face"}
EntitySet.update(["Model", "Edge"])
print(EntitySet)

Output
{'Face', 'Edge', 'Model', 'Body'}

Remove Items

remove()

removes the given item, posts error if item doesn't exist.

EntitySet = {"Body", "Face", "Edge"}
EntitySet.remove("Face")
print(EntitySet)

Output
{'Edge', 'Body'}

discard()

removes the given item, posts error if item doesn't exist.

EntitySet = {"Body", "Face", "Edge"}
EntitySet.discard("Face")
print(EntitySet)

Output
{'Edge', 'Body'}

Delete Set

deletes the set.

EntitySet = {"Body", "Face", "Edge"}
del EntitySet

Clear Set

empties the set.

EntitySet = {"Body", "Face", "Edge"}
EntitySet.clear()
print(EntitySet)

Output
set()

Set Traversal

EntitySet = {"Body", "Face", "Edge"}
for e in EntitySet:
	print(e)

Output
Face
Edge
Body

Check Set for an item

EntitySet = {"Body", "Face", "Edge"}
if "Face" in EntitySet:
	print("Face")

Output
Face