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import rarfile

data_file_path = ‘C:\\data_folder\\file_name.rar’
extracted_folder = ‘C:\\TEMP’

rf = rarfile.RarFile(data_file_path)  # 待解压文件

password = '123456'

rf.setpassword(pwd=password)

rf.extractall(extracted_folder)

如果出现报错： 

rarfile.RarCannotExec: Cannot find working tool.

把winrar的目录设置到环境变量，重启PyCharm 就可以解决。