workspace object + exec() command

[Travis-S]

On the feature-dashboards branch in Tutorial 20, running this code

from pygsti.report import workspace
w = workspace.Workspace()

Gave rise to this SyntaxError:

File "/Users/tlschol/Desktop/pyGSTi/packages/pygsti/report/workspace.py", line 158
    exec(factory_func_def, exec_globals) #Python 3
SyntaxError: function 'makefactory' uses import * and bare exec, which are illegal because it is a nested function

In pygsti/report/workspace.py, the relevant lines are

exec_globals = {'cls' : cls, 'self': self}
if _sys.version_info > (3, 0):
    exec(factory_func_def, exec_globals) #Python 3
else:
    exec("""exec factory_func_def in exec_globals""") #Python 2

A similar issue arises if you comment out the first part of the if/then, and have the interpreter check the other line:

File "/Users/tlschol/Desktop/pyGSTi/packages/pygsti/report/workspace.py", line 161
    exec("""exec factory_func_def in exec_globals""") #Python 2
SyntaxError: unqualified exec is not allowed in function 'makefactory' because it is a nested function

This syntax error prevents the creation of the workspace object, which in turn blocks the user from executing any of the remaining code in Tutorials 20, 21, or 22.

The system I am using has pygsti 0.9.3, and Python 2.7.12 :: Anaconda custom (x86_64).

[enielse]

Thanks for noticing this Travis. I had only been testing with Python3. I think commit 1a98c84 to feature-dashboards fixes the issues with running the Tutorials. Please try again and let me know if you still encounter issues.

[Travis-S]

The workspace object is now operating! The tutorials run.

[Travis-S]

Closing this issue.