本文整理匯總了Python中pandas.core.sparse.api.SparseDataFrame.reindex方法的典型用法代碼示例。如果您正苦於以下問題：Python SparseDataFrame.reindex方法的具體用法？Python SparseDataFrame.reindex怎麽用？Python SparseDataFrame.reindex使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類pandas.core.sparse.api.SparseDataFrame的用法示例。
在下文中一共展示了SparseDataFrame.reindex方法的3個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: test_getitem
# 需要導入模塊: from pandas.core.sparse.api import SparseDataFrame [as 別名]
# 或者: from pandas.core.sparse.api.SparseDataFrame import reindex [as 別名]
def test_getitem(self):
# 1585 select multiple columns
sdf = SparseDataFrame(index=[0, 1, 2], columns=['a', 'b', 'c'])
result = sdf[['a', 'b']]
exp = sdf.reindex(columns=['a', 'b'])
tm.assert_sp_frame_equal(result, exp)
pytest.raises(Exception, sdf.__getitem__, ['a', 'd'])示例2: test_reindex_method
# 需要導入模塊: from pandas.core.sparse.api import SparseDataFrame [as 別名]
# 或者: from pandas.core.sparse.api.SparseDataFrame import reindex [as 別名]
def test_reindex_method(self):
sparse = SparseDataFrame(data=[[11., 12., 14.],
[21., 22., 24.],
[41., 42., 44.]],
index=[1, 2, 4],
columns=[1, 2, 4],
dtype=float)
# Over indices
# default method
result = sparse.reindex(index=range(6))
expected = SparseDataFrame(data=[[nan, nan, nan],
[11., 12., 14.],
[21., 22., 24.],
[nan, nan, nan],
[41., 42., 44.],
[nan, nan, nan]],
index=range(6),
columns=[1, 2, 4],
dtype=float)
tm.assert_sp_frame_equal(result, expected)
# method='bfill'
result = sparse.reindex(index=range(6), method='bfill')
expected = SparseDataFrame(data=[[11., 12., 14.],
[11., 12., 14.],
[21., 22., 24.],
[41., 42., 44.],
[41., 42., 44.],
[nan, nan, nan]],
index=range(6),
columns=[1, 2, 4],
dtype=float)
tm.assert_sp_frame_equal(result, expected)
# method='ffill'
result = sparse.reindex(index=range(6), method='ffill')
expected = SparseDataFrame(data=[[nan, nan, nan],
[11., 12., 14.],
[21., 22., 24.],
[21., 22., 24.],
[41., 42., 44.],
[41., 42., 44.]],
index=range(6),
columns=[1, 2, 4],
dtype=float)
tm.assert_sp_frame_equal(result, expected)
# Over columns
# default method
result = sparse.reindex(columns=range(6))
expected = SparseDataFrame(data=[[nan, 11., 12., nan, 14., nan],
[nan, 21., 22., nan, 24., nan],
[nan, 41., 42., nan, 44., nan]],
index=[1, 2, 4],
columns=range(6),
dtype=float)
tm.assert_sp_frame_equal(result, expected)
# method='bfill'
with pytest.raises(NotImplementedError):
sparse.reindex(columns=range(6), method='bfill')
# method='ffill'
with pytest.raises(NotImplementedError):
sparse.reindex(columns=range(6), method='ffill')示例3: TestSparseDataFrame
# 需要導入模塊: from pandas.core.sparse.api import SparseDataFrame [as 別名]
# 或者: from pandas.core.sparse.api.SparseDataFrame import reindex [as 別名]
#.........這裏部分代碼省略.........
assert isinstance(series, SparseSeries)
assert isinstance(self.iframe['A'].sp_index, IntIndex)
# constructed zframe from matrix above
assert self.zframe['A'].fill_value == 0
tm.assert_numpy_array_equal(pd.SparseArray([1., 2., 3., 4., 5., 6.]),
self.zframe['A'].values)
tm.assert_numpy_array_equal(np.array([0., 0., 0., 0., 1., 2.,
3., 4., 5., 6.]),
self.zframe['A'].to_dense().values)
# construct no data
sdf = SparseDataFrame(columns=np.arange(10), index=np.arange(10))
for col, series in compat.iteritems(sdf):
assert isinstance(series, SparseSeries)
# construct from nested dict
data = {}
for c, s in compat.iteritems(self.frame):
data[c] = s.to_dict()
sdf = SparseDataFrame(data)
tm.assert_sp_frame_equal(sdf, self.frame)
# TODO: test data is copied from inputs
# init dict with different index
idx = self.frame.index[:5]
cons = SparseDataFrame(
self.frame, index=idx, columns=self.frame.columns,
default_fill_value=self.frame.default_fill_value,
default_kind=self.frame.default_kind, copy=True)
reindexed = self.frame.reindex(idx)
tm.assert_sp_frame_equal(cons, reindexed, exact_indices=False)
# assert level parameter breaks reindex
with pytest.raises(TypeError):
self.frame.reindex(idx, level=0)
repr(self.frame)
def test_constructor_dict_order(self):
# GH19018
# initialization ordering: by insertion order if python>= 3.6, else
# order by value
d = {'b': [2, 3], 'a': [0, 1]}
frame = SparseDataFrame(data=d)
if compat.PY36:
expected = SparseDataFrame(data=d, columns=list('ba'))
else:
expected = SparseDataFrame(data=d, columns=list('ab'))
tm.assert_sp_frame_equal(frame, expected)
def test_constructor_ndarray(self):
# no index or columns
sp = SparseDataFrame(self.frame.values)
# 1d
sp = SparseDataFrame(self.data['A'], index=self.dates, columns=['A'])
tm.assert_sp_frame_equal(sp, self.frame.reindex(columns=['A']))
# raise on level argument
pytest.raises(TypeError, self.frame.reindex, columns=['A'],
level=1)