>>> grdPts = { 'A':4, 'B':3, 'C':2}
>>> grdPts
{'A': 4, 'C': 2, 'B': 3}
>>> keySort = sorted(grdPts.keys())
>>> grdPts.keys()
['A', 'C', 'B']
>>> grdPts.values()
[4, 2, 3]
>>> keySort
['A', 'B', 'C']
>>> for k in keySort:
	print k, grdPts[k]

	
A 4
B 3
C 2
>>> grdPts['D'] = 1
>>> grdPts
{'A': 4, 'C': 2, 'B': 3, 'D': 1}
>>> grdPts['F'] = 0
>>> grdPts
{'A': 4, 'C': 2, 'B': 3, 'D': 1, 'F': 0}
>>> for k in grdPts:
	grdPts[k] = float(grdPts[k])

	
>>> grdPts
{'A': 4.0, 'C': 2.0, 'B': 3.0, 'D': 1.0, 'F': 0.0}