Environment Variables¶

Legacy Wiki Page

This page was migrated from the old MoinMoin-based wiki. Information may be outdated or no longer applicable. For current documentation, see python.org.

Bash-like Global Substitution¶

   1 globals().update(os.environ)  # Import environment
   2 
   3 
   4 def replace_w_global_value(mo):
   5     key = mo.group(0)
   6     without_dollar = key[1:]
   7     return str(globals().get(without_dollar, key))
   8 
   9 
  10 def subs(input):
  11     """Perform Bash-like substitutions.
  12 
  13     Any "$FOO" in a string will be replaced with the value of FOO.
  14     If it's not defined, it stays as it was: "$FOO".
  15     """
  16     return re.sub('[$][A-Za-z_]+', replace_w_global_value, input)

Discussion¶

The only question I have is: Is there a way to make all assignments within the module, automatically call os.putenv?

So, intercept assignment with [setattr] or something, on the module.

I don’t know how to get a handle to the current module, though.

– LionKimbro 2005-12-16 20:37:07

GeezerVison

Environment Variables¶

Bash-like Global Substitution¶

Discussion¶