/usr/share/pyshared/matplotlib-1.3.1.egg-info/requires.txt is in python-matplotlib 1.3.1-1ubuntu5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | numpy>=1.5
python-dateutil
tornado
pyparsing>=1.5.6
nose
|