In tools.py version 0.1.2 (the latest, AFAIK), there is a function xl.apply(), which runs on a column, creating a new column with the list that is returned. This fails with an error such as the following:
>>> xl.apply(CompareToAverage, wb.get("id"))
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python27\lib\site-packages\pyvot-0.1.2-py2.7.egg\xl\tools.py", line 94, in apply
y = __builtin__.apply(func, xs)
TypeError: apply() arg 2 expected sequence, found generator
The reason for this error seems to be line 92 in xl/tools.py:
xs = (_to_value(r) for r in rangeIn)
That is a generator expression. The apply function is expecting a list, not a generator, so it blows up.
If you change the line to a list comprehension (replace outer parens with brackets), it works as expected:
xs = [_to_value(r) for r in rangeIn]
Hope this helps.