On Tue, 26 Nov 2002, Tino Wildenhain wrote:
> Tried it:
> >>> os.environ['MYENVIRON']='FooBar'
> echo $MYENVIRON
> ^^^^ nothing.
> What is wrong?
^^^^^ equally nothing.
export (and the equivalent python above) sets the environment
variable in the current process environment space, *not* the parent
(that's a *much* trickier operation). The obverse (TEST='abc'
somecommandhere) sets the environment variable only in the *sub*process
environment space (the one being created) and does not affect the
current process. The python equivalent of *that* would be to supply
a modified *copy* of the ENVIRON dict to execve or similar.
To do the python equivalent of what happens when you set a variable
in a script *without* using export (the current process environment
is changed but the change is not passed to subprocesses), you'd
have to make a copy of the environ before modifying it, and pass
*that* to execve or equivalent.
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