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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