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  1. python - What is the difference between shallow copy, deepcopy and ...

    May 6, 2017 · Below code demonstrates the difference between assignment, shallow copy using the copy method, shallow copy using the (slice) [:] and the deepcopy. Below example uses nested lists …

  2. 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 …

  3. 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 …

  4. 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 = …

  5. python - How to deep copy a list? - Stack Overflow

    import copy copy.copy() copy.deepcopy() copy() is a shallow copy function. If the given argument is a compound data structure, for instance a list, then Python will create another object of the same type …

  6. What is --from, as used in COPY command in Dockerfile?

    Feb 24, 2021 · So, in order to access that directory and copy the content inside it, your final build (third instruction) is copying from that directory using --from=publish so you can access the directory from …

  7. linux - Copy text from nano editor to shell - Stack Overflow

    May 28, 2015 · Is it possible to copy text from a file, opened with nano, to the shell? I have a text file, and I want to copy several lines to the console, but I cannot find a keyboard shortcut to copy the text.

  8. 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 …

  9. How to override the copy/deepcopy operations for a Python object?

    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 …

  10. 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 …