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    bŠÝgµ  ã                   @   s,   d dl Z d dlZe  e¡Zedœdd„ZdS )é    N)Úreturnc                  C   s"   t j d¡} | st d¡ dS | S )z)Get user agent from environment variable.Z
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   r   r   r   r	   Ú<module>   s   
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