union() method in Python set

All set methods

Set Operations in Python

union using | operator

All Common elements in sets
Using vertical bar ( | ) operator
A={1,2,3}
B={3,4,5}
print(A|B)
Output ( Note 3 is used once only )
{1, 2, 3, 4, 5}
Using union() method
A={'a','b','c'}
B={'a','y','z'}
print(A.union(B))
Output
{'z', 'c', 'a', 'y', 'b'}

Using more than one sets

We can use any number of sets with union()
A={'a','b','c'}
B={'a','y','z'}
C={'a','k','l'}
print(A | B |C)
Output
{'z', 'l', 'k', 'c', 'a', 'y', 'b'}

union() method

Using string ( iterable object ) with union() method
A={'a','b','c','x','y'}
B='Alex'
print(A.union(B))
Output
{'l', 'e', 'A', 'a', 'c', 'x', 'y', 'b'}
Using list with union() method.
A={'a','b','c'}
B=['a','x','y']
print(A.union(B))
Output
{'c', 'x', 'y', 'a', 'b'}
Below code will generate error. All set methods Questions with solutions on set intersection() difference() symmetric()

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