How can I obtain the element-wise logical NOT of a pandas Series?

Question

I have a pandas Series object containing boolean values. How can I get a series containing the logical NOT of each value?

For example, consider a series containing:

True

True

True

False

The series I'd like to get would contain:

False

False

False

True

This seems like it should be reasonably simple, but apparently I've misplaced my mojo =(

Answer 1

For inverting a boolean Series, use ~s:

In [7]: s = pd.Series([True, True, False, True])

In [8]: ~s

Out[8]: 

0    False

1    False

2     True

3    False

dtype: bool