symmetric_difference_update() method in Python set

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Using symmetric_difference_update() method

A={'a','b','c'}
B={'a','y','z'}
A.symmetric_difference_update(B)
print(A)

{'y', 'b', 'c', 'z'}

symmetric_difference_update() method

A={'a','b','c','x','y'}
B='Alex'
A.symmetric_difference_update(B)
print(A)

{'y', 'l', 'A', 'e', 'b', 'a', 'c'}

A={'a','b','c'}
B=['a','x','y']
A.symmetric_difference_update(B)
print(A)

{'y', 'x', 'b', 'c'}