Unpickle pickled objects from a specified file and return the contents.
stror file-like object
The file name or file from which to unpickle objects. If a file object, it should have been opened in binary mode.
If 0, a single object will be returned (the first in the file). If >0, this specifies the number of objects to be unpickled, and a list will be returned with exactly that many objects. If <0, all objects in the file will be unpickled and returned as a list.
numberis >0 and there are fewer than
numberobjects in the pickled file.