laywerrobot/lib/python3.6/site-packages/pandas/tests/series/test_subclass.py

108 lines
3.9 KiB
Python
Raw Normal View History

2020-08-27 21:55:39 +02:00
# coding=utf-8
# pylint: disable-msg=E1101,W0612
import numpy as np
import pandas as pd
import pandas.util.testing as tm
class TestSeriesSubclassing(object):
def test_indexing_sliced(self):
s = tm.SubclassedSeries([1, 2, 3, 4], index=list('abcd'))
res = s.loc[['a', 'b']]
exp = tm.SubclassedSeries([1, 2], index=list('ab'))
tm.assert_series_equal(res, exp)
res = s.iloc[[2, 3]]
exp = tm.SubclassedSeries([3, 4], index=list('cd'))
tm.assert_series_equal(res, exp)
res = s.loc[['a', 'b']]
exp = tm.SubclassedSeries([1, 2], index=list('ab'))
tm.assert_series_equal(res, exp)
def test_to_frame(self):
s = tm.SubclassedSeries([1, 2, 3, 4], index=list('abcd'), name='xxx')
res = s.to_frame()
exp = tm.SubclassedDataFrame({'xxx': [1, 2, 3, 4]}, index=list('abcd'))
tm.assert_frame_equal(res, exp)
def test_subclass_unstack(self):
# GH 15564
s = tm.SubclassedSeries(
[1, 2, 3, 4], index=[list('aabb'), list('xyxy')])
res = s.unstack()
exp = tm.SubclassedDataFrame(
{'x': [1, 3], 'y': [2, 4]}, index=['a', 'b'])
tm.assert_frame_equal(res, exp)
class TestSparseSeriesSubclassing(object):
def test_subclass_sparse_slice(self):
# int64
s = tm.SubclassedSparseSeries([1, 2, 3, 4, 5])
exp = tm.SubclassedSparseSeries([2, 3, 4], index=[1, 2, 3])
tm.assert_sp_series_equal(s.loc[1:3], exp)
assert s.loc[1:3].dtype == np.int64
exp = tm.SubclassedSparseSeries([2, 3], index=[1, 2])
tm.assert_sp_series_equal(s.iloc[1:3], exp)
assert s.iloc[1:3].dtype == np.int64
exp = tm.SubclassedSparseSeries([2, 3], index=[1, 2])
tm.assert_sp_series_equal(s[1:3], exp)
assert s[1:3].dtype == np.int64
# float64
s = tm.SubclassedSparseSeries([1., 2., 3., 4., 5.])
exp = tm.SubclassedSparseSeries([2., 3., 4.], index=[1, 2, 3])
tm.assert_sp_series_equal(s.loc[1:3], exp)
assert s.loc[1:3].dtype == np.float64
exp = tm.SubclassedSparseSeries([2., 3.], index=[1, 2])
tm.assert_sp_series_equal(s.iloc[1:3], exp)
assert s.iloc[1:3].dtype == np.float64
exp = tm.SubclassedSparseSeries([2., 3.], index=[1, 2])
tm.assert_sp_series_equal(s[1:3], exp)
assert s[1:3].dtype == np.float64
def test_subclass_sparse_addition(self):
s1 = tm.SubclassedSparseSeries([1, 3, 5])
s2 = tm.SubclassedSparseSeries([-2, 5, 12])
exp = tm.SubclassedSparseSeries([-1, 8, 17])
tm.assert_sp_series_equal(s1 + s2, exp)
s1 = tm.SubclassedSparseSeries([4.0, 5.0, 6.0])
s2 = tm.SubclassedSparseSeries([1.0, 2.0, 3.0])
exp = tm.SubclassedSparseSeries([5., 7., 9.])
tm.assert_sp_series_equal(s1 + s2, exp)
def test_subclass_sparse_to_frame(self):
s = tm.SubclassedSparseSeries([1, 2], index=list('abcd'), name='xxx')
res = s.to_frame()
exp_arr = pd.SparseArray([1, 2], dtype=np.int64, kind='block',
fill_value=0)
exp = tm.SubclassedSparseDataFrame({'xxx': exp_arr},
index=list('abcd'),
default_fill_value=0)
tm.assert_sp_frame_equal(res, exp)
# create from int dict
res = tm.SubclassedSparseDataFrame({'xxx': [1, 2]},
index=list('abcd'),
default_fill_value=0)
tm.assert_sp_frame_equal(res, exp)
s = tm.SubclassedSparseSeries([1.1, 2.1], index=list('abcd'),
name='xxx')
res = s.to_frame()
exp = tm.SubclassedSparseDataFrame({'xxx': [1.1, 2.1]},
index=list('abcd'))
tm.assert_sp_frame_equal(res, exp)