json - Converting str to dict in python -


i got process's output using subprocess.popen() :

    { about: 'rrdtool xport json output',   meta: {     start: 1401778440,     step: 60,     end: 1401778440,     legend: [       'rta_min',       'rta_max',       'rta_average'           ]      },   data: [     [ null, null, null ],     [ null, null, null ],     [ null, null, null ],     [ null, null, null ],     [ null, null, null ],     [ null, null, null  ]   ] }

it doesn't seem valid json me. have used ast.literal_eval() , json.loads(), no luck. can me in right direction ? in advance.

indeed, older versions of rddtool export ecma-script, not json. according this debian bug report upgrading 1.4.8 should give proper json. see project changelog:

json output of xport json compilant keys being quoted now.

if cannot upgrade, have 2 options here; either attempt reformat apply quoting object key identifiers, or use parser that's more lenient , parses ecma-script object notation.

the latter can done external demjson library:

>>> import demjson >>> demjson.decode('''\ ... { about: 'rrdtool xport json output', ...   meta: { ...     start: 1401778440, ...     step: 60, ...     end: 1401778440, ...     legend: [ ...       'rta_min', ...       'rta_max', ...       'rta_average' ...           ] ...      }, ...   data: [ ...     [ null, null, null ], ...     [ null, null, null ], ...     [ null, null, null ], ...     [ null, null, null ], ...     [ null, null, null ], ...     [ null, null, null  ] ...   ] ... }''') {u'about': u'rrdtool xport json output', u'meta': {u'start': 1401778440, u'step': 60, u'end': 1401778440, u'legend': [u'rta_min', u'rta_max', u'rta_average']}, u'data': [[none, none, none], [none, none, none], [none, none, none], [none, none, none], [none, none, none], [none, none, none]]}

repairing can done using regular expression; going assume identifiers on new line or directly after opening { curly brace. single quotes in list have changed double quotes; work if there no embedded single quotes in values too:

import re import json  yourtext = re.sub(r'(?:^|(?<={))\s*(\w+)(?=:)', r' "\1"', yourtext, flags=re.m) yourtext = re.sub(r"'", r'"', yourtext) data = json.loads(yourtext)

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