documentation updates.

phasecalculator/classes/temperature.py

@@ -34,7 +34,7 @@ class Temperature(object):
     TOLERANCE = 0.01
 
     def __init__(self, temperature, temperature_unit):
-        """
+        """Initialise object.
 
         Parameters
         ----------
@@ -72,6 +72,19 @@ class Temperature(object):
             return False
     @classmethod
     def parse_xml(cls, temperature_xml):
+        """Parse XML representation to new instance.
+
+        Parameters
+        ----------
+        temperature_xml : lxml.etree.ElementTree
+            Element tree representation of temperature XML.
+
+        Returns
+        -------
+        Temperature
+            New instance.
+
+        """
         temp_xpath = "@phasecalc:value"
         temperature = float(temperature_xml.xpath(temp_xpath, namespaces=PHASE_CALC_NAMESPACE_DICT)[0])
         unit_xpath = "@phasecalc:unit"