python - How to deep copy a list? - Stack Overflow Regarding the list as a tree, the deep_copy in python can be most compactly written as def deep_copy(x): if not isinstance(x, list): return x else: return [deep_copy(elem) for elem in x] It's basically recursively traversing the list in a depth-first way
How to Deep Copy a List in Python - Delft Stack A deep copy of a list is to create a new list and then recursively insert in it the copies of the original list’s elements It refers to cloning a list, and any changes made in the original list do not affect the cloned list
Python Shallow Copy and Deep Copy (With Examples) - Programiz We use the copy module of Python for shallow and deep copy operations Suppose, you need to copy the compound list say x For example: import copy copy copy(x) copy deepcopy(x) Here, the copy() return a shallow copy of x Similarly, deepcopy() return a deep copy of x
How to Make a Deep Copy of a List in Python - Tutorial Kart To create a deep copy of a list in Python, use the copy deepcopy() method from the copy module A deep copy ensures that nested lists (or other mutable objects inside the list) are copied independently, meaning changes in the copied list will not affect the original list
Cloning a List in Python (Deep Copy Shallow Copy) Cloning allows you to create a copy of a list to work with independently, preserving the original list in its original state A shallow copy in Python creates a new list that references the original elements It copies the top-level structure of the list but not the nested objects
What are the options to clone or copy a list in Python? - Stack Overflow To make a deep copy of a list, in Python 2 or 3, use deepcopy in the copy module: import copy a_deep_copy = copy deepcopy(a_list) To demonstrate how this allows us to make new sub-lists: >>> import copy >>> l [['foo'], [], []] >>> l_deep_copy = copy deepcopy(l) >>> l_deep_copy[0] pop() 'foo' >>> l_deep_copy [[], [], []] >>> l [['foo'], [], []]