[Users] how macro-variables is replaced

------=_Part_193839_1176079034.1362892252082 Content-Type: text/plain; charset=GBK Content-Transfer-Encoding: 7bit in vdsm code, there are many macro-variables like @xxxxx@. i want to know how it is replaced by real value. like config.py.in. ('trust_store_path', '@TRUSTSTORE@', 'Where the certificates and keys are situated.'), thanks ------=_Part_193839_1176079034.1362892252082 Content-Type: text/html; charset=GBK Content-Transfer-Encoding: 7bit <div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial">in vdsm code, there are many macro-variables like @xxxxx@.<div>i want to know how it is replaced by real value.</div><div>like config.py.in.</div><div><div>&nbsp;('trust_store_path', '<span style="color: rgb(255, 0, 0);">@TRUSTSTORE@</span>',</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 'Where the certificates and keys are situated.'),</div></div><div><br></div><div>thanks</div></div><br><br><span title="neteasefooter"><span id="netease_mail_footer"></span></span> ------=_Part_193839_1176079034.1362892252082--