Athena Developer Guide

Athena Chapter 6 Scripting Version/Issue: 2.0.0
1. This creates a new Python object of type Sequencer, having the same name as the newly
created Athena Sequencer.
2. This creates a new Python object of type Algorithm, having the same name as the newly
created Athena Algorithm.
The Python commands that might require a subsequent synchronization are shown in Listing 6.7:
Listing 6.7 Examples of Python commands that might create new Algorithms or Services
theApp.ExtSvc = [...]
theApp.TopAlg = [...]
Sequencer.Members = [...]
Sequencer.BranchMembers = [...]
OutStream.AcceptAlgs = [...]
OutStream.RequireAlgs = [...]
OutStream.VetoAlgs = [...]
6.8 Controlling job execution
This is very limited in the prototype, and will be replaced in a future release by the ability to call
functions on the Python objects corresponding to the ApplicationMgr (theApp), Algorithms, and
Services.
In the prototype, control is returned from the Python shell to the Athena environment by the command
in Listing 6.8:
Listing 6.8 Python command to resume Athena execution
>>> theApp.Go [1]
Notes:
1. This is a temporary command that will be replaced in a future release by a more flexible
ability to access more functions of the ApplicationMgr.
This will cause the currently configured event loop to be executed, after which control will be returned
to the Python shell.
Typing Ctrl-D (holding down the Ctrl key while striking the D key) at the Python shell prompt will
cause an orderly termination of the job. Althernatively, the command shown in Listing 6.9 will also
cause an orderly application termination.
Listing 6.9 Python command to terminate Athena execution
>>> theApp.Exit [1]
page 40