python copy dictionary
Because deep copy copies everything it may copy too much, such as data which is intended to be shared between copies. The deepcopy() function avoids these problems by: keeping a “memo” dictionary of objects already copied during the current copying pass; , from copy import deepcopy new_dict = deepcopy(orig_dict). dict.copy() creates shallow copies, which means, if your dictionary contains other container-objects like list, tuples, etc. they will be referenced again and not duplicated! You can try for yours
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 python copy dictionary 相關參考資料
8.10. copy — Shallow and deep copy operations — Python 3.6.5 ...
The deepcopy() function avoids these problems by: keeping a “memo” dictionary of objects already copied during the current copying pass; and; letting user-defined classes override the copying operatio... https://docs.python.org 8.17. copy — Shallow and deep copy operations — Python 2.7.15rc1 ...
Because deep copy copies everything it may copy too much, such as data which is intended to be shared between copies. The deepcopy() function avoids these problems by: keeping a “memo” dictionary of o... https://docs.python.org python - Copy a dictionary into a new variable without maintaining ...
from copy import deepcopy new_dict = deepcopy(orig_dict). dict.copy() creates shallow copies, which means, if your dictionary contains other container-objects like list, tuples, etc. they will be ref... https://stackoverflow.com python - How to copy a dictionary and only edit the copy - Stack ...
Python never implicitly copies objects. When you set dict2 = dict1 , you are making them refer to the same exact dict object, so when you mutate it, all references to it keep referring to the object ... https://stackoverflow.com python - How to copy a dictionary and only edit the copy - Stack Overflow
A shallow copy constructs a new compound object and then (to the extent possible) inserts references into it to the objects found in the original. https://stackoverflow.com python - Understanding dict.copy() - shallow or deep? - Stack Overflow
By "shallow copying" it means the content of the dictionary is not copied by value, but just creating a new reference. >>> a = 1: [1,2,3]} >>> b = a.copy() >>> a,... https://stackoverflow.com |