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# -*- coding: utf-8 -*-
from __future__ import division, print_function, absolute_import
import pytest
import petl as etl
from petl.test.helpers import ieq
from petl.io.pandas import todataframe, fromdataframe
try:
import pandas as pd # noqa: F401
except ImportError as e:
pytest.skip('SKIP pandas tests: %s' % e, allow_module_level=True)
else:
def test_todataframe():
tbl = [('foo', 'bar', 'baz'),
('apples', 1, 2.5),
('oranges', 3, 4.4),
('pears', 7, .1)]
expect = pd.DataFrame.from_records(tbl[1:], columns=tbl[0])
actual = todataframe(tbl)
assert expect.equals(actual)
def test_headerless():
tbl = []
expect = pd.DataFrame()
actual = todataframe(tbl)
assert expect.equals(actual)
def test_fromdataframe():
tbl = [('foo', 'bar', 'baz'),
('apples', 1, 2.5),
('oranges', 3, 4.4),
('pears', 7, .1)]
df = pd.DataFrame.from_records(tbl[1:], columns=tbl[0])
ieq(tbl, fromdataframe(df))
ieq(tbl, fromdataframe(df))
def test_integration():
tbl = [('foo', 'bar', 'baz'),
('apples', 1, 2.5),
('oranges', 3, 4.4),
('pears', 7, .1)]
df = etl.wrap(tbl).todataframe()
tbl2 = etl.fromdataframe(df)
ieq(tbl, tbl2)
ieq(tbl, tbl2)
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