Add captureattr util function

OpUtils.py

@@ -27,6 +27,32 @@ def searchattr(prx, attr, ignorecase=True):
     else:
         return [a for a in prx.get_attribute_list() if attr in a]
 
+def captureattr(prx):
+    """
+    Capture all attributes in the device, return a python dict.
+
+    PARAMETERS
+    ----------
+    prx: tango.DeviceProxy
+        Proxy to the device.
+
+    RETURN
+    ------
+    attrs: dict
+        keys are attributes names, values are values.
+    """
+
+    attrs=dict()
+    attrlist=prx.get_attribute_list()
+
+    R= prx.read_attributes(attrlist, wait=True)
+    for r in R:
+        attrs[r.name.lower()]=r.value
+
+    return attrs
+
+
+
 ###############################################################################
 # FUNCTIONS ON TANGO DATABASE
 ###############################################################################