affectation in if statement

[samb]

Hi,

I'm trying to do something like :

if m = re.match(r'define\s+(\S+)\s*{$', line):
    thing = m.group(1)
elif m = re.match(r'include\s+(\S+)$', line):
    thing = m.group(1)
else
    thing = ""

But in fact I'm not allowed to affect a variable in "if" statement.
My code should then look like :

if re.match(r'define\s+(\S+)\s*{$', line):
    m = re.match(r'define\s+(\S+)\s*{$', line)
    thing = m.group(1)
elif re.match(r'include\s+(\S+)$', line):
    m = re.match(r'include\s+(\S+)$', line)
    thing = m.group(1)
else
    thing = ""

Which is not nice because I'm doing twice the same instruction
or like :

m = re.match(r'define\s+(\S+)\s*{$', line)
if m:
    thing = m.group(1)
else:
    m = re.match(r'include\s+(\S+)$', line)
    if m:
        thing = m.group(1)
    else
        thing = ""

Which isn't nice neither because I'm going to have maybe 20 match
tests and I wouldn't like to have 20 indentations.

Anyone a recommendation?

Thanks!