Python - Copy Sets

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Python Copy Sets

The copy() method in set class creates a shallow copy of a set object.

Syntax

set.copy()

Return Value

The copy() method returns a new set which is a shallow copy of existing set.

Example

lang1 = {"C", "C++", "Java", "Python"}
print ("lang1: ", lang1, "id(lang1): ", id(lang1))
lang2 = lang1.copy()
print ("lang2: ", lang2, "id(lang2): ", id(lang2))
lang1.add("PHP")
print ("After updating lang1")
print ("lang1: ", lang1, "id(lang1): ", id(lang1))
print ("lang2: ", lang2, "id(lang2): ", id(lang2))

Output

lang1: {'Python', 'Java', 'C', 'C++'} id(lang1): 2451578196864
lang2: {'Python', 'Java', 'C', 'C++'} id(lang2): 2451578197312
After updating lang1
lang1: {'Python', 'C', 'C++', 'PHP', 'Java'} id(lang1): 2451578196864
lang2: {'Python', 'Java', 'C', 'C++'} id(lang2): 2451578197312