ipython笔记本散景和output_notebook

Question

What is happening when I get the following error? There is no error from within the notebook. But when I do this in regular iPython I'm wondering what is happening.... and what In: means... see error below.... (last 5 lines)

#set up domain and function with max
x = np.linspace(lower, upper, steps)
y = func(x)
y_max = np.amax(y) * 1.1

output_notebook()

p = figure(
   tools="pan,box_zoom,reset,save",
   y_range=[0, y_max], title="Some Beta Distributions",
   x_axis_label='days', y_axis_label='value'
)

p.line(x, y, legend = "pdf", line_color="blue")

show(p)
/usr/local/lib/python2.7/dist-packages/IPython/utils/path.py:303: UserWarning: IPython dir
 '/home/vagrant/.ipython' is not a writable location, using a temp directory.
  " using a temp directory.".format(ipdir))
In :
In :

Answer 1

It means that for whatever reason, your account does not have permission to modify the contents of the .ipython folder, which IPython uses to store some settings and cache some data, so IPython will create and use a temporary directory instead.

To fix this, you should either modify the permissions on the .ipython folder from the command line and give yourself read/write permissions, or modify the IPYTHON_DIR environment variable to point to a folder you do have permissions for.

Or, if you don't feel like fixing the error + don't mind that IPython is using a temp folder, don't do anything.

Answer 2

In: is the standard ipython prompt. It is ipython 's way of telling you that it is waiting for input (just like >>> in the standard python interpreter).

Note that output_notebook will only function in the browser (ie, in the notebook). If you want to run code in a command line ipython shell (I am assuming that is what you mean by "in regular iPython") then you will have to use output_file or one of the functions in bokeh.embed .