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""" Tablib - DataFrame Support.
"""
import sys
if sys.version_info[0] > 2:
from io import BytesIO
else:
from cStringIO import StringIO as BytesIO
try:
from pandas import DataFrame
except ImportError:
DataFrame = None
import tablib
from tablib.compat import unicode
title = 'df'
extensions = ('df', )
def detect(stream):
"""Returns True if given stream is a DataFrame."""
if DataFrame is None:
return False
try:
DataFrame(stream)
return True
except ValueError:
return False
def export_set(dset, index=None):
"""Returns DataFrame representation of DataBook."""
if DataFrame is None:
raise NotImplementedError(
'DataFrame Format requires `pandas` to be installed.'
' Try `pip install tablib[pandas]`.')
dataframe = DataFrame(dset.dict, columns=dset.headers)
return dataframe
def import_set(dset, in_stream):
"""Returns dataset from DataFrame."""
dset.wipe()
dset.dict = in_stream.to_dict(orient='records')
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