newbie variables question
chris.gonnerman at usa.net
Sat Mar 31 08:50:15 CEST 2001
----- Original Message -----
From: "Michael Hall" <py.list at mulga.com.au>
Subject: newbie variables question>
> I've been trying to do this:
> SYSPRODIR = /home/admin/systemprofile
> os.system('mv /tmp/install.log SYSPRODIR/install.log')
> No matter how I play around with single and double quotes, this won't
You're thinking /bin/sh. Quoting has little to do with it.
> But this does work:
> os.system('mv /tmp/install.log %s/install.log' %s SYSPRODIR)
I hope it actually says:
os.system('mv /tmp/install.log %s/install.log' % SYSPRODIR)
This is one correct way to do what you want.
> Is this the normal/best way to do this in Python ... seems a little
> convoluted me, like there must be a simpler way. Bash for example would be
> happy with something like:
> mv /tmp/install.log $SYSPRODIR/install.log
> while PHP is happy with things like:
> include ("$SYSPRODIR/install.log");
The other way in Python is this:
os.system('mv /tmp/install.log ' + SYSPRODIR + '/install.log')
which works fine so long as SYSPRODIR is a string.
Substitution into a string is almost always done with the % operator, as
"format string" % value
or for multiple values:
"format string" % (v1, v2, v3)
where the second operand is obviously a tuple.
> Thanks for any advice. I haven't found any clear info about this in
> Learning Python yet.
Happy to help.
More information about the Python-list