On Jun 5, 9:40 pm, Alain Ketterlin <al...@dpt-info.u-strasbg.fr>
wrote:
> richard <pullenjenn...@gmail.com> writes:
>
> [I'm leaving the data in the message in case anybody has troubles going
> up-thread.]
>
>
>
>
>
>
>
>
>
> > Hi guys still struggling to get the code that was posted to me on this
> > forum to work in my favour and get the output in the format shown
> > above. This is what I have so far. Any help will be greatly
> > apprectiated.
>
> > output trying to achieve
> > parsed = [
> > {
> > "a":"a",
> > "b":"b",
> > "c":"c",
> > "A_elements":[
> > {
> > "a":1,
> > "b":2,
> > "c":3
> > },
> > {
> > "a":1,
> > "b":2,
> > "c":3
> > }
> > ],
> > "B_elements":[
> > {
> > "a":1,
> > "b":2,
> > "c":3,
> > "C_elements":[
> > {
> > "a":1,
> > "b":2,
> > "c":3
> > },
> > {
> > "a":1,
> > "b":2,
> > "c":3
> > }
> > ]
> > }
> > ]
> > },
>
> > {
> > "a":"1",
> > "b":"2",
> > "c":"3",
> > }
>
> > ]
>
> > file format unchangeable
>
> > An instance of TestArray
> > a=a
> > b=b
> > c=c
> > List of 2 A elements:
> > Instance of A element
> > a=1
> > b=2
> > c=3
> > Instance of A element
> > d=1
> > e=2
> > f=3
> > List of 1 B elements
> > Instance of B element
> > a=1
> > b=2
> > c=3
> > List of 2 C elements
> > Instance of C element
> > a=1
> > b=2
> > c=3
> > Instance of C element
> > a=1
> > b=2
> > c=3
>
> > An instance of TestArray
> > a=1
> > b=2
> > c=3
>
> > def test_parser(filename):
> > class Stanza:
> > def __init__(self, values):
> > for attr, val in values:
> > setattr(self, attr, val)
>
> > def build(couple):
> > if "=" in couple[0]:
> > attr, val = couple[0].split("=")
> > return attr,val
> > elif "Instance of" in couple[0]:
> > match = re.search("Instance of (.+) element", couple[0])
> > return ("attr_%s" % match.group(1),Stanza(couple[1]))
> > elif "List of" in couple[0]:
> > match = re.search("List of \d (.+) elements", couple[0])
> > return ("%s_elements" % match.group(1),couple[1])
>
> You forgot one case:
>
> def build(couple):
> if "=" in couple[0]:
> attr, val = couple[0].split("=")
> return attr,val
> elif "Instance of" in couple[0]:
> #match = re.search("Instance of (.+) element", couple[0])
> #return ("attr_%s" % match.group(1),Stanza(couple[1]))
> return dict(couple[1])
> elif "An instance of" in couple[0]: # you forgot that case
> return dict(couple[1])
> elif "List of" in couple[0]:
> match = re.search("List of \d (.+) elements", couple[0])
> return ("%s_elements" % match.group(1),couple[1])
> else:
> pass # put a test here
>
> > fo = open(filename, "r")
> > RE = re.compile("( *)(.*)")
> > stack = [("-",[])]
> > for line in fo:
> > matches = RE.match(line)
> > if len(matches.group(2)) > 0:
> > depth = 1 + len(matches.group(1))
> > while len(stack) > depth:
> > stack[-2][1].append(build(stack[-1]))
> > del stack[-1]
> > stack.append( (matches.group(2),[]) )
> > while len(stack) > 1:
> > stack[-2][1].append(stack[-1])
>
> Change this to:
>
> stack[-2][1].append(build(stack[-1])) # call build() here also
>
> > del stack[-1]
> > return stack
>
> Actually the first and only element of stack is a container: all you
> need is the second element of the only tuple in stack, so:
>
> return stack[0][1]
>
> and this is your list. If you need it pretty printed, you'll have to
> work the hierarchy.
>
> -- Alain.
Hi Alain, thanks for the reply. Amended the code and just busy
debugging but the stack i get back justs return [None, None]. Also
should have been clearer when i mentioned the format above the dicts
are actually objects instantaited from classes and just printed out as
obj.__dict__ just for representation putposes. so where you have
replaced the following i presume this was because of my format
confusion. Thanks
> elif "Instance of" in couple[0]:
> match = re.search("Instance of (.+) element", couple[0])
> return ("attr_%s" % match.group(1),Stanza(couple[1]))
> #instantiating new object and setting attributes
>
with
> elif "Instance of" in couple[0]:
> #match = re.search("Instance of (.+) element", couple[0])
> #return ("attr_%s" % match.group(1),Stanza(couple[1]))
> return dict(couple[1])
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