Python uses the pickle module to store data and reports an error to solve the sample code, pythonpickle

Python uses the pickle module to store data and reports an error to solve the sample code, pythonpickle

This article focuses on how to use the pickle module in Python to store data error solutions. The solution is presented in the form of Code as follows.

First, let's take a lookPickle Module

• Pickle provides a simple persistence function. Objects can be stored on disks as files.
• The pickle module can only be used in python. Almost all data types (list, Dictionary, set, and class) in python can be serialized using pickle,
• The serialized data of pickle has poor readability and is generally unrecognized.

Next, let's take a look at how Python uses the pickle module to store data errors.

Code:

# Write error TypeError: write () argument must be str, not bytes # Read error UnicodeDecodeError: 'gbk' codec can't decode byte 0x80 in position 0: illegal multibyte sequence

Solution:

Def storeTree (inputTree, fielname): import pickle # When writing a file, specify 'wb' fw = open (fielname, 'wb') pickle. dump (inputTree, fw) fw. close () def grabTree (filename): import pickle # When reading a file, specify 'rb' fr = open (filename, 'rb') fr = open (filename) return pickle. load (fr) storeTree (myTree, 'classifierstorage.txt'{print(grabtree('classifierstorage.txt '))

Output:

{'no surfacing': {0: 'no', 1: {'flippers': {0: 'no', 1: 'yes'}}}}Process finished with exit code 0

Summary

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