
How can I create a copy of an object in Python? - Stack Overflow
Jan 25, 2011 · To get a fully independent copy of an object you can use the copy.deepcopy() function. For more details about shallow and deep copying please refer to the other answers to this question …
why should I make a copy of a data frame in pandas
Dec 28, 2014 · When selecting a sub dataframe from a parent dataframe, I noticed that some programmers make a copy of the data frame using the .copy() method. For example, X = …
How to copy a dictionary and only edit the copy - Stack Overflow
Mar 18, 2010 · 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 …
Dockerfile copy keep subdirectory structure - Stack Overflow
May 13, 2015 · This is the best solution because in one command you can copy an entire filesystem's worth of changes into an image layer. I keep a /resources directory in my source repo that mirrors …
python - How do I copy a file? - Stack Overflow
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 …
What is the difference between a deep copy and a shallow copy?
This answer explains copy by reference vs copy by value. Shallow copy vs deep copy is a concept that applies to collections. See this answer and this answer.
What is a copy constructor in C++? - Stack Overflow
Jan 30, 2010 · A copy constructor is a constructor which does deep copy. You should write your own copy constructor when there is a pointer type variable inside the class. Compiler will insert copy …
How can I copy and paste content from one file to another?
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
Visual Studio Copy Project - Stack Overflow
Jan 17, 2012 · 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 …
How do I clone a list so that it doesn't change unexpectedly after ...
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. If you need to copy the elements of the list as well, use generic …