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2012-05-05 14:35:51 +0100 commented answer Fail to start: No module named IPython

Interesting! I just tried to do the same but it didn't resolve the problem for me. One question: did you download sage-4.8-linux-64bit-ubuntu_10.04.3_lts-x86_64-Linux.tar.lzma? (That's what I did, but I notice there's also a file with "8.04.4" in the name.) Thanks!

2012-05-01 01:00:35 +0100 commented question Fail to start: No module named IPython

Yes, this is what I downloaded: sage-4.8-linux-64bit-ubuntu_10.04.3_lts-x86_64-Linux.tar.lzma

2012-05-01 00:23:22 +0100 commented question Fail to start: No module named IPython

I'm having this same problem trying to run sage in a clean install of 64-bit Ubuntu 12.04. (Prior to this new install I was running 32-bit Ubuntu 11.10 and was able to run sage with no problems.)

2012-05-01 00:13:39 +0100 answered a question Fail to start: No module named IPython

Hello,

It looks like I'm having the same problem (and I'm adding to this post in case it's helpful to know that this might be a wider issue -- maybe with 12.04?).

I made a clean install of 64-bit Ubuntu 12.04 then downloaded and unpacked the 64-bit sage binaries. Ran ./sage from within the sage directory and got this traceback:


Traceback (most recent call last): File "/opt/sage/sage-4.8-linux-64bit-ubuntu_10.04.3_lts-x86_64-Linux/local/bin/sage-ipython", line 18, in <module> import IPython File "/opt/sage/sage-4.8-linux-64bit-ubuntu_10.04.3_lts-x86_64-Linux/local/lib/python2.6/site-packages/IPython/__init__.py", line 58, in <module> __import__(name,glob,loc,[]) File "/opt/sage/sage-4.8-linux-64bit-ubuntu_10.04.3_lts-x86_64-Linux/local/lib/python2.6/site-packages/IPython/ipstruct.py", line 17, in <module> from IPython.genutils import list2dict2 File "/opt/sage/sage-4.8-linux-64bit-ubuntu_10.04.3_lts-x86_64-Linux/local/lib/python2.6/site-packages/IPython/genutils.py", line 53, in <module> from IPython.external.path import path File "/opt/sage/sage-4.8-linux-64bit-ubuntu_10.04.3_lts-x86_64-Linux/local/lib/python2.6/site-packages/IPython/external/path.py", line 35, in <module> import md5 File "/opt/sage/sage-4.8-linux-64bit-ubuntu_10.04.3_lts-x86_64-Linux/local/lib/python/md5.py", line 10, in <module> from hashlib import md5 File "/opt/sage/sage-4.8-linux-64bit-ubuntu_10.04.3_lts-x86_64-Linux/local/lib/python/hashlib.py", line 136, in <module> md5 = __get_builtin_constructor('md5') File "/opt/sage/sage-4.8-linux-64bit-ubuntu_10.04.3_lts-x86_64-Linux/local/lib/python/hashlib.py", line 63, in __get_builtin_constructor import _md5 ImportError: No module named _md5


Prior to this new install I was running 32-bit Ubuntu 11.10 and was able to run sage with no problems.

Thanks!