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BUG : read_json with table='orient' causes unexpected type coercion #21408

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BUG : read_json with table='orient' causes unexpected type coercion #21408

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cf34164
Update json.py
uds5501 Jun 10, 2018
5b6b6d2
Update json.py
uds5501 Jun 10, 2018
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18 changes: 14 additions & 4 deletions pandas/io/json/json.py
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Original file line number Diff line number Diff line change
Expand Up @@ -706,10 +706,10 @@ def _try_convert_data(self, name, data, use_dtypes=True,
except (TypeError, ValueError):
pass

# do't coerce 0-len data
if len(data) and (data.dtype == 'float' or data.dtype == 'object'):
# don't coerce 0-len data
if len(data) and (data.dtype == 'object'):

# coerce ints if we can
# coerce int if we can
try:
new_data = data.astype('int64')
if (new_data == data).all():
Expand All @@ -721,13 +721,23 @@ def _try_convert_data(self, name, data, use_dtypes=True,
# coerce ints to 64
if data.dtype == 'int':

# coerce floats to 64
# coerce ints to 64
try:
data = data.astype('int64')
result = True
except (TypeError, ValueError):
pass

# coerce floats to 64
if data.dtype == 'float':

# coerce floats to 64
try:
data = data.astype('float64')
result = True
except (TypeError, ValueError):
pass

return data, result

def _try_convert_to_date(self, data):
Expand Down