I think this would be better 
```python 
                    "generated_by": "QIIME revision XYZ",
                    "date": "2011-12-19T19:00:00",
                    "rows":[
                        {"id":"GG_OTU_1",
                         "metadata":{"taxonomy":["k__Bacteria",
                                                 "p__Proteobacteria",
                                                 "c__Gammaproteobacteria",
                                                 "o__Enterobacteriales",
                                                 "f__Enterobacteriaceae",
                                                 "g__Escherichia", "s__"]}},
                        {"id":"GG_OTU_2", 
                            "metadata":{"taxonomy":["k__Bacteria",
                                                    "p__Cyanobacteria",
                                                    "c__Nostocophycideae",
                                                    "o__Nostocales",
                                                    "f__Nostocaceae",
                                                    "g__Dolichospermum",
                                                    "s__"]}},
                        {"id":"GG_OTU_3", 
                            "metadata":{"taxonomy":["k__Archaea",
                                                    "p__Euryarchaeota",
                                                    "c__Methanomicrobia",
                                                    "o__Methanosarcinales",
                                                    "f__Methanosarcinaceae",
                                                    "g__Methanosarcina",
                                                    "s__"]}},
                        {"id":"GG_OTU_4", 
                         "metadata":{"taxonomy":["k__Bacteria",
                                                 "p__Firmicutes",
                                                 "c__Clostridia",
                                                 "o__Halanaerobiales",
                                                 "f__Halanaerobiaceae",
                                                 "g__Halanaerobium",
                                                 ("s__Halanaerobiumsa"
                                                  "ccharolyticum")]}},
                        {"id":"GG_OTU_5", 
                         "metadata":{"taxonomy":["k__Bacteria",
                                                 "p__Proteobacteria",
                                                 "c__Gammaproteobacteria",
                                                 "o__Enterobacteriales",
                                                 "f__Enterobacteriaceae",
                                                 "g__Escherichia", "s__"]}}
                        ],
```

It is much clearer what goes in each category, it is pep8 (but my linter is complaining about