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Python copy() Function
The copy() function in Python, is used to copy a list, dictionary, or a set. For example:
a = [9, 8, 10, 12] print("The list \"a\" is:") print(a) b = a.copy() print("\nThe list \"b\" is:") print(b) c = [] print("\nThe list \"c\" is:") print(c) c = b.copy() print("\nNow the list \"c\" is:") print(c)
The output produced by above Python program, demonstrating the copy() function, is:
The list "a" is: [9, 8, 10, 12] The list "b" is: [9, 8, 10, 12] The list "c" is: [] Now the list "c" is: [9, 8, 10, 12]
Here is another example, uses copy() function to copy a dictionary and a list in Python:
dictionaryOne = {"Name": "Brian", "State": "California"} dictionaryTwo = dictionaryOne.copy() print(dictionaryTwo) setOne = {43, 54, 65} setTwo = setOne.copy() print(setTwo)
The output will exactly be:
{'Name': 'Brian', 'State': 'California'} {65, 43, 54}
Python copy() Function Syntax
The syntax to use copy() function in Python, is:
varTwo = varOne.copy()
where varOne and varTwo are two variables of list, dict, or of set types.
The varOne gets copied to varTwo. Or all the items of varOne gets initialized to varTwo.
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