Create a variable "on the fly"
Scott David Daniels
Scott.Daniels at Acm.Org
Thu Jul 28 11:45:02 EDT 2005
Paul D.Smith wrote:
>... What I'm left with is the following...
> 1. A shell script which I maintain.
> 2. A simple Python config which searches for all shell environment variables
> named "MY_..." and instantiates then as Python variables.
> 3. Historical scripts that run without me needing to spend time hunting down
> all the config variables and replacing them with os.environ['MY_...'].
Suppose you have a module named 'MY', with MY.py as:
import os
_globals = globals()
for _name, _entry in os.environ.iteritems():
if _name.startswith('MY_'):
try:
_entry = int(_entry)
except ValueError:
try:
_entry = float(_entry)
except ValueError:
pass
_globals[_name[3 :]] = _entry
then, wherever your python scripts use MY_XYZ, you begin the script
with "import MY" and change every "MY_XYZ" to "MY.XYZ".
--Scott David Daniels
Scott.Daniels at Acm.Org
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