sympy-sympy-71127e3 (git clone) does not install physics.mechanics module in the target directory. The module does exist in the downloaded tarball.
sid@rlrvsxaskeys001:~/.local/lib/python2.7/site-packages/sympy/physics $ ls gaussopt.py __init__.pyc qho_1d.py sho.py wigner.py gaussopt.pyc matrices.py qho_1d.pyc sho.pyc wigner.pyc hydrogen.py matrices.pyc quantum tests hydrogen.pyc paulialgebra.py secondquant.py units.py __init__.py paulialgebra.pyc secondquant.pyc units.pyc sid@rlrvsxaskeys001:~/.local/lib/python2.7/site-packages/sympy/physics $ sid@rlrvsxaskeys001:~/Documents/git/sympy-sympy-2d8f7a8$ ls sympy/ physics gaussopt.py matrices.py qho_1d.py tests hydrogen.py matrices.pyc quantum units.py __init__.py mechanics secondquant.py units.pyc __init__.pyc paulialgebra.py sho.py wigner.py sid@rlrvsxaskeys001:~/Documents/git/sympy-sympy-2d8f7a8$ V/R Scott -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com. To unsubscribe from this group, send email to sympy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.