[EMAIL PROTECTED] (Jim Hill) writes:
> I've done some Googling around on this and it seems like creating a here
> document is a bit tricky with Python. Trivial via triple-quoted strings
> if there's no need for variable interpolation but requiring a long, long
> formatted arglist via (%s,%s,%s,ad infinitum) if there is. So my
> question is:
>
> Is there a way to produce a very long multiline string of output with
> variables' values inserted without having to resort to this wacky
>
> """v = %s"""%(variable)
> business?
Hmmmmmm, by using the %(varname)[dsf...] with vars(), locals(),
globals(), someDict, et al, a little messy but not terribly difficult.
It gets uglier though if you want to do this from inside a function
and have variables from more than one scope interpolated. For that
you need something that can treat a series of dicts as one.If there's
built in functionality in Python for this, I haven't discovered it
yet.
To wit;
# feed this thing with one or more dicts, in order of decreasing
#search priority.
class multiDict:
def __init__(self, *dicts):
self.dicts = dicts
def __getitem__(self, key):
for dict in self.dicts:
if dict.has_key(key):
return dict[key]
raise(KeyError)
globalvar = 100
def foo():
localvar = 200
print """
%(globalvar)d
%(localvar)d
""" % multiDict(globals(), locals())
foo()
------------------
Now all else that we need to make this pretty would be macros, a la
cpp m4 or similar
define(`VARS', `multiDict(locals(), globals())')
print "..." % VARS
You get the idea.
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