Reading manual pages
When we are in IPython's pylab mode, we can open manual pages for NumPy functions with the help command. It is not necessary to know the name of a function. We can type a few characters and then let tab completion do its work. Let's, for instance, browse the available information for the arange function.
How to do it...
We can browse the available information, in either of the following two ways:
Calling the help function: Call the
helpcommand. Type a few characters of the function and press the Tab key:
Querying with a question mark: Another option is to put a question mark behind the function name. You will then, of course, need to know the function name, but you don't have to type
help:In [3]: arange?
How it works...
Tab completion is dependent on readline, so you need to make sure it is installed. The question mark gives you information from docstrings.
