isnull() and notnull() - documentation

[c0indev3l]

Hi,

It will be nice if someone can add that
isnull() function have a contrary which is called notnull()
and
notnull() function have a contrary which is called isnull()
into documentation

http://pandas.pydata.org/pandas-docs/stable/generated/pandas.Series.notnull.html
http://pandas.pydata.org/pandas-docs/stable/generated/pandas.Series.isnull.html

That's probably stupid for you but I was searching a long time to find that
(I was looking for isnotnull())

Maybe this documentation could also tell that

df[df['col'].notnull()] is same as ``df[~df['col'].isnull()]`

Kind regards

[jreback]

care to do a pull-request for this?

you can do just add a see also section

[jorisvandenbossche]

You should add something like this to the docstring:

See also
--------
isnull : short explanation

[c0indev3l]

I'm sorry but I don't speak enough English to help documentation. My explanations could be confusing.