> The parenthesization you had earlier forced Python into printing out
> your template before it had an opportunity to plug arg into it. You
> need to do the interpolation first.
Gaaah. Brain freeze.
I was pointing at the wrong code. *grin*
I meant to look at the other statement that you had, the one that raised
the error:
##############################
var = 456
def printd(arg):
print(">>> %s") % arg
printd(var)
printd('Variable is %s') % var
##############################
There might be two possibilities to fix this code. One will do the
interpolation first:
##############################
var = 456
def printd(arg):
print(">>> %s") % arg
printd(var)
printd('Variable is %s' % var)
##############################
But the other possible fix is to change printd() from being a side-effect
function to something that actually returns something:
###################################
var = 456
def arrow(arg):
return (">>> %s" % arg)
print arrow(var)
print arrow('Variable is %s') % var
###################################
This second approach is better: functions that return values are more
reusable than ones that are fixated on printing things to the screen.
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