[Numpy-discussion] numpy and readline installation fails
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cannonjunk at hotmail.co.uk
Wed Jul 4 10:16:16 EDT 2012
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
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