ubuntu 14.04 crashes after removing python 3.4

Asked by isnan

I intended to remove python 3.4 (default in ubuntu 14.04) since I prefer to have the version of 2.7.
I used command:
apt-get --purge remove python3.4

After the installation I found that firefox and ubuntu software center have been uninstalled as well. Then I reinstalled those programs and restarted the computer. Viola! I couldn't see anything on the desktop but background colour. Even I couldn't use shortcut-key e.g. Ctrl+Alt+T to open Terminal.

What is the possible cause and solution?

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Thomas Krüger (thkrueger) said :
#1

You might have luck with installing "ubuntu-desktop" from console.

The cause: many components of Ubuntu need Python 3 and they depend on it. If you remove Python 3 they will be removed as well.

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