Capturing letter brackets inside brackets in pyparsing

Question

I'm trying to parse some function arguments using PyParsing, but it's hard for me to get the correct syntax. Namely, given:

str = "(key=val())"

I would like the parser to return ['key', 'val()'].

I tried to get this to work with the following code; challenges are .suppress()intentionally dropped for clarity.

ob = Literal("(")
cb = Literal(")")
key = Word(alphas)
value = Word(alpha + "()") 
parser = ob + key + "=" + value + cb
print parser.parseString(str)

but of course it also matches the final closing bracket, and therefore I get a ParseException.

Is there an elegant solution? For example, I looked at nestedExpr, but in this case it is not strictly a nest, since I want to val()be treated as a literal. Similarly, this question refers to a problem, but does not provide a solution.

Answer 1

value = Word(alpha + "()")

. trailing(), , , :

SLDFJJ(sldkjf)
sdlkfj(sldkfj(lkskdjf)))(

:

(((((())(()()()()

, - :

identifier = Word(alphas+'_', alphanums+'_')

value = Combine(identifier + '()')

value () s () .