File extension naming: . p vs . pkl vs . pickle - Stack Overflow The extension makes no difference because "The Pickle Protocol" runs every time That is to say whenever pickle dumps or pickle loads is run the objects are serialized un-serialized according to the pickle protocol (The pickle protocol is a serialization format) The pickle protocol is python specific(and there are several versions)
python - Pickle with custom classes - Stack Overflow Really what is happening is that with the test1 py, the object being read back from the pickle file is the same as test2 py, but its using the class in memory where you had originally assigned x A When your data is being unpickled from the file, it creates a new instance of the class type, and then applies whatever instance data it needs to
python - How to read pickle file? - Stack Overflow If you simply do pickle load you should be reading the first object serialized into the file (not the last one as you've written) After unserializing the first object, the file-pointer is at the beggining of the next object - if you simply call pickle load again, it will read that next object - do that until the end of the file
python - How to use append with pickle? - Stack Overflow Pickle streams are entirely self-contained, and so unpickling will unpickle one object at a time Therefore, to unpickle multiple streams, you should repeatedly unpickle the file until you get an EOFError:
Python pickle protocol choice? - Stack Overflow Python 3 no longer distinguishes between cPickle and pickle, always use pickle when using Python 3 It uses a compiled C extension under the hood It uses a compiled C extension under the hood If you are still using Python 2, then cPickle and pickle are mostly compatible, the differences lie in the API offered