JunOS FW policies to Python dictionaries

[Larz60+]

today's your lucky day. This is quick and dirty, you should probably try to make it more efficient, but it works
You will also have to modify file names and paths

from pathlib import Path
import json


class ParseData:
    def __init__(self):
        self.home = Path('.')
        self.datafile = self.home / 'data' / 'data.txt'
        self.dataout = self.home / 'data' / 'data.json'

        self.datadict = { }
        self.source = None
        self.rule = None

        self.dest = None
        newitem = False

        self.reading_source = False
        self.reading_destination = False
        self.alldata = [ ]

        with self.datafile.open() as f, self.dataout.open('w') as fo:
            line = f.readlines()
            for item in line:
                if item.startswith('Policy:'):
                    if newitem:
                        self.save_item()
                    elements = item.split()
                    self.rule = elements[1].strip(',')
                    print(self.rule)
                    self.datadict[self.rule] = { }
                    newitem = True
                    continue
                elif item.startswith('Source'):
                    self.source = "sources"
                    self.reading_source = True
                    print('found source')
                    self.datadict[self.rule]['sources'] = { }
                    continue
                elif item.startswith('Destination'):
                    self.reading_source = False
                    self.reading_destination = True
                    print('found dest')
                    self.datadict[self.rule]['destinations'] = { }
                    continue
                elements = item.split()
                if self.reading_source:
                    self.datadict[self.rule]['sources'].append(elements[1])
                else:
                    self.datadict[self.rule]['destinations'].append(elements[1])
            # Save last item
            self.save_item()
            json.dump(self.alldata, fo)

    def save_item(self):
        self.alldata.append(self.datadict)
        self.datadict = {}
        self.source = None
        self.rule = None
        self.dest = None
        self.reading_source = False
        self.reading_destination = False

    def readback_test(self):
        self.alldata = [ ]
        with self.dataout.open() as f:
            self.alldata = json.load(f)
            for item in self.alldata:
                print(item)

if __name__ == '__main__':
    pd = ParseData()
    pd.readback_test()