On Thursday, October 4, 2012 4:52:50 PM UTC-4, Mike wrote: > Hi All, > > > > I am new to python and am getting the data from hbase. > > I am trying to do sum on the column as below > > > > > > scanner = client.scannerOpenWithStop("tab", "10", "1000", ["cf:col1"]) > > total = 0.0 > > r = client.scannerGet(scanner) > > while r: > > for k in (r[0].columns): > > total += float(r[0].columns[k].value) > > r = client.scannerGet(scanner) > > > > print total > > > > Do you know of better (faster) way to do sum? > > > > Any thoughts please? > > > > Thanks
Sorry about that. Here you go Traceback (most recent call last): File "test.py", line 17, in <module> total = sum(float(col.value) for r in iter(next_r, None) for col in r[0].columns.itervalues()) File "test.py", line 17, in <genexpr> total = sum(float(col.value) for r in iter(next_r, None) for col in r[0].columns.itervalues()) IndexError: list index out of range -- http://mail.python.org/mailman/listinfo/python-list