3 和 pickle milk 则对应 Python 3. What does ‘Space Complexity’ mean ?
How to print without newline in Python? The pickle module is used for implementing binary protocols for serializing and de-serializing a Python object structure. Pickling: It is a process where a Python object hierarchy is converted into a byte stream. Unpickling: It is the inverse of Pickling process where a byte stream is converted into an object hierarchy.
This function is called to serialize an object hierarchy. This function is called to de-serialize a data stream. This is an integer value representing the highest protocol version available. This is an integer value representing the default protocol used for pickling whose value may be less than the value of the highest protocol.
This is used to write a pickled representation of obj to the open file object file. The optional protocol argument is an integer that tells the pickler to use the given protocol. The supported protocols are 0 to HIGHEST_PROTOCOL. If not specified, the default is DEFAULT_PROTOCOL. If a negative number is specified, HIGHEST_PROTOCOL is selected. If fix_imports is true and protocol is less than 3, the pickle will try to map the new Python 3 names to the old module names used in Python 2, so that the pickle data stream is readable with Python 2. This function returns the pickled representation of the object as a bytes object.
1 S’a’ p2 S’A’ p3 sS’c’ p4 F3. This function is used to read a pickled object representation from the open file object file and return the reconstituted object hierarchy specified. This function is used to read a pickled object representation from a bytes object and return the reconstituted object hierarchy specified. It is the base class for all other exceptions raised in pickling. This exception is raised when an unpicklable object is encountered by Pickler. This exception is raised when there is a problem like data corruption or a security violation while unpickling an object.
