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app_common/cf_xml_reader/README.md

+# CF_XML_READER
+
+A simple python tool which can access CF-standard table 1.6
+
+
+## Useage
+```py
+from app_common.cf_xml_reader import cf_xml_reader
+# cf_xml_reader has property dict which save cf standard table as dictionary format
+The structure of the cf_xml_reader.dict looks like this
+example_dict= { standard_name:{
+					    "canonical_units":unit_str,
+					    "grib":grib_str,
+					    "amip":amip_str,
+					    "description":description_str,
+					    },
+		....
+		}
+# example usage for get cf unit by standard name
+standard_name = 'air_pressure'
+cf_unit_str = cf_xml_reader.dict[standard_name]["canonical_units"]
+print(cf_unit_str)
+Pa
+# example usage for get cf description by standard name
+description = cf_xml_reader.dict[standard_name]["description"]
+print(description)
+Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation.
+```
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