通过Shell脚本传递WKT变量

Question

我的变量无法通过Shell执行，该变量是WKT。我想通过以便可以在python中使用变量。或者如何将WKB转换为WKT？

我正在从数据库中读取几何图形，其值为WKB格式

PHP代码...

$str = pg_query($conn, "SELECT ST_AsText(geom) As geoms FROM villages WHERE setlname = '$city'") or die ("Data loading failed: ".pg_last_error());
...
...
$geom = $data['geoms'];
$output = shell_exec("/usr/bin/python Results.py  $geom");

Python ...

def geomRead(): 
   geom = sys.argv[1]
   #Or how do I get the geom as wkb & convert it to wkt once it has been passed
   print geom 

def main(): 
   geomRead() 

if __name__ == '__main__':
   main()

将值传递给python之后，我要进行一些计算，获取面积并进行区域统计。目前，我得到的结果为空。