How do I add two sets?

Question

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

I want to add above two set values. I need output like

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

Answer 1

All you have to do to combine them is

c = a | b 

Sets are unordered sequences of unique values. a | b or a.union(b) is the union of the two sets (a new set with all values found in either set). This is a class of operation called a "set operation", which Python sets provide convenient tools for.

Answer 2

You can use .update() to combine set b into set a. Try this:

a = {'a', 'b', 'c'} b = {'d', 'e', 'f'} a.update(b) print(a) 

To create a new set, c you first need to .copy() the first set:

c = a.copy() c.update(b) print(c)