Day5 common modules json and pickle

JSON and Pickle

JSON and pickle are used for string serialization and deserialization, and when we store and use it, we often save the list in a file, and we want to read it as a list when we read it. You need to use JSON and pickle. JSON is a support for all interfaces, and Pickle is Python's own built-in interface.

Two modules for serialization

(1) JSON for converting between string and Python data types

(2) Pickle for conversion between Python-specific types and Python data types

The JSON module provides four functions: dumps, dump, loads, load

The Pickle module provides four functions: dumps, dump, loads, load

Methods of the JSON module:

(1) Dump ()

def dump (obj, FP, Skipkeys=false, Ensure_ascii=true, Check_circular=true,
Allow_nan=true, Cls=none, Indent=none, Separators=none,
Default=none, Sort_keys=false, **kw):
" "" Serialize "' obj ' ' as a JSON f ormatted stream to ' FP ' (a

Dump (OBJ,FP) is the writing of information to a file, and dump () is the first to convert obj into a string format, file-aware content, and then write to the file.

Day5 common modules json and pickle