Run Python 'coverage' tool as a module if possible

[takluyver]

This means coverage can still be called to convert its data to XML even if it's not on PATH.

Closes #71.

[takluyver]

Something's going wrong on Travis and the Python interpreter is going to interactive mode. I'm guessing it's picking up the -i flag meant for coverage. Trying to see if I can replicate this locally.

[codecov]

Codecov Report

Merging #202 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #202   +/-   ##
=====================================
  Coverage       0%     0%           
=====================================
  Files           1      1           
  Lines           1      1           
=====================================
  Misses          1      1

[takluyver]

OK, resolved the problem in Travis by using shell=False for those calls. This means that the Python (coverage) process is a direct subprocess, rather than having an intermediate shell process.

[takluyver]

Thanks! When you've got time, it would be great to see a new release on PyPI. :-)

[takluyver]

Ping @stevepeak - any chance of a new release of codecov-python? Maybe @thomasrockhu needs to be added on PyPI so he can make a release?