Below example uses nested lists there by making the differences more evident. Import copy new_list = copy.copy(old_list) this is a little slower than list() because it has to find out the datatype of old_list first 340 to get a fully independent copy of an object you can use the copy.deepcopy() function
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For more details about shallow and deep copying please refer to the other answers to this question and the nice explanation in this answer to a related question.
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
A deep copy constructs a new compound object and then, recursively, inserts copies into it of the objects found in the original. I am working with two files, and i need to copy a few lines from one file and paste them into another file I know how to copy (yy) and paste (p) in the same file But that doesn't work for different
If you want a copy, the fastest way of doing this would be to save the project Then make a copy of the entire thing on the file system Go back into visual studio and open the copy (by right clicking on solution => add existing project => open the copied project) The copy module does not use the copy_reg registration module
In order for a class to define its own copy implementation, it can define special methods __copy__() and __deepcopy__()
The former is called to implement the shallow copy operation No additional arguments are passed. How do i copy a file in python?copy2(src,dst) is often more useful than copyfile(src,dst) because It allows dst to be a directory (instead of the complete target filename), in which case the basename of src is used for creating the new file
It preserves the original modification and access info (mtime and atime) in the file metadata (however, this comes with a slight overhead) You should check the add and copy documentation for a more detailed description of their behaviors, but in a nutshell, the major difference is that add can do more than copy Add allows <src> to be a url referring to comments below, the add documentation states that If is a local tar archive in a recognized compression format (identity, gzip, bzip2 or xz) then it is unpacked as a directory.