This is a tricky one: if I add a space, then I get a PEP8 complaint that the indentation is not visually distinct...
```
if (self.location is not None and
    self.location.ndim > 1 and self.location.shape[1] > 1 and
    (self.isscalar or self.location.shape[1] != len(self))):
    raise ValueError('Have {0} times but {1} locations.  Should '
```
I think in this case the lesser crime is to remove the space after the `if`...