sympy/sympy-live — pull request #15 by trishume (2011-11-29 21:10:59+00:00)
Title: GCI Task bug fix: Disabled execution of empty (pure whitespace or zero length) statements.

Any statement that matches the regex /^\s*$/ will not be executed.

Meaning any statement that contains either no characters or pure whitespace.

For Google Code-In task "DON'T ALLOW EMPTY EXECUTION IN SYMPY LIVE"
http://www.google-melange.com/gci/task/view/google/gci2011/7193395