i@yttrium ~/tmp/PE_142 % my_time.py ./1.py
['./1.py']
x:  434657
y:  420968
z:  150568

failures: 215193
branches: 430387
WallTime: 457060
['/home/i/dotfiles/bin/my_time.py', './1.py']
seconds:  457
or:  7m37s