Hello, I'm new to python and I'd like to learn about numpy / scipy / matplotlib, but I'm having trouble getting started. I'm following the instructions here: http://www.scipy.org/Getting_Started First I installed the latest version of python from python.org by downloading the dmg file, since I read that it doesn't work with apple's installer, and then installed numpy / scipy / matplotlib by downloading the relevent dmg files. I then downloaded ipython, ran "easy_install readline" and then ran "python setup.py install". Then I started ipython with "ipython -pylab" as per the instructions but then I get muliple error messages: $ ipython --pylab /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/IPython/utils/rlineimpl.py:111: RuntimeWarning: ****************************************************************************** libedit detected - readline will not be well behaved, including but not limited to: * crashes on tab completion * incorrect history navigation * corrupting long-lines * failure to wrap or indent lines properly It is highly recommended that you install readline, which is easy_installable: easy_install readline Note that `pip install readline` generally DOES NOT WORK, because it installs to site-packages, which come *after* lib-dynload in sys.path, where readline is located. It must be `easy_install readline`, or to a custom location on your PYTHONPATH (even --user comes after lib-dyload). ****************************************************************************** RuntimeWarning) Python 2.7.3 (v2.7.3:70274d53c1dd, Apr 9 2012, 20:52:43) Type "copyright", "credits" or "license" for more information. IPython 0.13 -- An enhanced Interactive Python. ? -> Introduction and overview of IPython's features. %quickref -> Quick reference. help -> Python's own help system. object? -> Details about 'object', use 'object??' for extra details. [TerminalIPythonApp] GUI event loop or pylab initialization failed --------------------------------------------------------------------------- ImportError Traceback (most recent call last) /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/IPython/core/pylabtools.pyc in find_gui_and_backend(gui) 194 """ 195 --> 196 import matplotlib 197 198 if gui and gui != 'auto': /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/__init__.py in <module>() 131 import sys, os, tempfile 132 --> 133 from matplotlib.rcsetup import (defaultParams, 134 validate_backend, 135 validate_toolbar, /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/rcsetup.py in <module>() 17 import warnings 18 from matplotlib.fontconfig_pattern import parse_fontconfig_pattern ---> 19 from matplotlib.colors import is_color_like 20 21 #interactive_bk = ['gtk', 'gtkagg', 'gtkcairo', 'fltkagg', 'qtagg', 'qt4agg', /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/colors.py in <module>() 50 """ 51 import re ---> 52 import numpy as np 53 from numpy import ma 54 import matplotlib.cbook as cbook ImportError: No module named numpy In [1]:   it seems the installation of numpy and readline didn't work, and there are problems with matplotlib, even though I think I followed all the instructions carefully. I can't figure out what I did wrong. Can anybody help? I'm running mac os 10.6. Thank you! Tom