On 17/08/11 12:07, Tarek Ziadé wrote:
On Wed, Jul 27, 2011 at 1:51 PM, Simon Cross<[email protected]> wrote:
On Tue, Jul 26, 2011 at 11:04 PM, Tarek Ziadé<[email protected]> wrote:
I used PLY for an experiment, and I was trying to improve my DSL, in
particular allow trailing commas.
I haven't thought about this particularly hard (I just tested simple
cases) but does:
def p_statements(p):
"""statements : statements COMMA statement
| statements COMMA
| statement
"""
if len(p) == 2:
p[0] = [p[1]]
elif len(p) == 3:
p[0] = p[1]
else:
p[0] = p[1] + [p[3]]
Help?
Yeah that's what I was going to do, but I was wondering if there was a
generic way to handle this case, because I am going to have to add it
in many statements.
You could add an empty statenment, except that would allow "foo,,,"
Albert
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