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1. Null object pattern (Python)Null object pattern (Python)

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   """

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   This module provides the Null class for the null object design pattern.

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   """

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   fromcollectionsimportMutableMapping,MutableSequence

2. Increase the volume -- and impair th...Increase the volume -- and impair the quality -- of your audiobooks

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   #!/bin/bash

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   set -e

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   if [$#!= 0 ];then

3. A4 Thermal Printer Linux driverA4 Thermal Printer Linux driver

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   A4 Thermal Printer Linux driver

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   ===============================

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   This is a Linux driver for "GZQIANJI"**A4 portable thermal roll printer** from AliExpress.

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   The printer is recognized as "XMDY GD88", also known as "GZMA412". 🤷

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