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ENH: Supporting REPEATED schema for list types #60

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ENH: Supporting REPEATED schema for list types #60

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03b201b
ENH: Supporting REPEATED schema for list types
txomon Jun 22, 2017
79f46fe
Adding a test to check repeated fields
txomon Jun 30, 2017
30c4248
Fixing linting
txomon Jun 30, 2017
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7 changes: 5 additions & 2 deletions pandas_gbq/gbq.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1079,8 +1079,11 @@ def _generate_bq_schema(df, default_type='STRING'):

fields = []
for column_name, dtype in df.dtypes.iteritems():
fields.append({'name': column_name,
'type': type_mapping.get(dtype.kind, default_type)})
definition = {'name': column_name,
'type': type_mapping.get(dtype.kind, default_type)}
if isinstance(getattr(df, column_name)[0], list):
definition['mode'] = 'REPEATED'
fields.append(definition)

return {'fields': fields}

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12 changes: 12 additions & 0 deletions pandas_gbq/tests/test_gbq.py
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Expand Up @@ -1091,6 +1091,18 @@ def test_generate_schema(self):

assert schema == test_schema

def test_generate_repeated_schema(self):
df = DataFrame([{'A': [1, 2, 3], 'B': ['1', '2']},
{'A': [3, 5], 'B': ['8', '3']}])
schema = gbq._generate_bq_schema(df)

test_schema = {'fields': [
{'name': 'A', 'type': 'INTEGER', 'mode': 'REPEATED'},
{'name': 'B', 'type': 'STRING', 'mode': 'REPEATED'}
]}

assert schema == test_schema

def test_create_table(self):
test_id = "6"
schema = gbq._generate_bq_schema(tm.makeMixedDataFrame())
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