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__init__.py00644editdlrm
Edit: /usr/local/lib64/python3.6/site-packages/pandas/tests/frame/test_cumulative.py (4228B)
""" Tests for DataFrame cumulative operations See also -------- tests.series.test_cumulative """ import numpy as np from pandas import DataFrame, Series import pandas._testing as tm class TestDataFrameCumulativeOps: # --------------------------------------------------------------------- # Cumulative Operations - cumsum, cummax, ... def test_cumsum_corner(self): dm = DataFrame(np.arange(20).reshape(4, 5), index=range(4), columns=range(5)) # TODO(wesm): do something with this? result = dm.cumsum() # noqa def test_cumsum(self, datetime_frame): datetime_frame.iloc[5:10, 0] = np.nan datetime_frame.iloc[10:15, 1] = np.nan datetime_frame.iloc[15:, 2] = np.nan # axis = 0 cumsum = datetime_frame.cumsum() expected = datetime_frame.apply(Series.cumsum) tm.assert_frame_equal(cumsum, expected) # axis = 1 cumsum = datetime_frame.cumsum(axis=1) expected = datetime_frame.apply(Series.cumsum, axis=1) tm.assert_frame_equal(cumsum, expected) # works df = DataFrame({"A": np.arange(20)}, index=np.arange(20)) df.cumsum() # fix issue cumsum_xs = datetime_frame.cumsum(axis=1) assert np.shape(cumsum_xs) == np.shape(datetime_frame) def test_cumprod(self, datetime_frame): datetime_frame.iloc[5:10, 0] = np.nan datetime_frame.iloc[10:15, 1] = np.nan datetime_frame.iloc[15:, 2] = np.nan # axis = 0 cumprod = datetime_frame.cumprod() expected = datetime_frame.apply(Series.cumprod) tm.assert_frame_equal(cumprod, expected) # axis = 1 cumprod = datetime_frame.cumprod(axis=1) expected = datetime_frame.apply(Series.cumprod, axis=1) tm.assert_frame_equal(cumprod, expected) # fix issue cumprod_xs = datetime_frame.cumprod(axis=1) assert np.shape(cumprod_xs) == np.shape(datetime_frame) # ints df = datetime_frame.fillna(0).astype(int) df.cumprod(0) df.cumprod(1) # ints32 df = datetime_frame.fillna(0).astype(np.int32) df.cumprod(0) df.cumprod(1) def test_cummin(self, datetime_frame): datetime_frame.iloc[5:10, 0] = np.nan datetime_frame.iloc[10:15, 1] = np.nan datetime_frame.iloc[15:, 2] = np.nan # axis = 0 cummin = datetime_frame.cummin() expected = datetime_frame.apply(Series.cummin) tm.assert_frame_equal(cummin, expected) # axis = 1 cummin = datetime_frame.cummin(axis=1) expected = datetime_frame.apply(Series.cummin, axis=1) tm.assert_frame_equal(cummin, expected) # it works df = DataFrame({"A": np.arange(20)}, index=np.arange(20)) df.cummin() # fix issue cummin_xs = datetime_frame.cummin(axis=1) assert np.shape(cummin_xs) == np.shape(datetime_frame) def test_cummax(self, datetime_frame): datetime_frame.iloc[5:10, 0] = np.nan datetime_frame.iloc[10:15, 1] = np.nan datetime_frame.iloc[15:, 2] = np.nan # axis = 0 cummax = datetime_frame.cummax() expected = datetime_frame.apply(Series.cummax) tm.assert_frame_equal(cummax, expected) # axis = 1 cummax = datetime_frame.cummax(axis=1) expected = datetime_frame.apply(Series.cummax, axis=1) tm.assert_frame_equal(cummax, expected) # it works df = DataFrame({"A": np.arange(20)}, index=np.arange(20)) df.cummax() # fix issue cummax_xs = datetime_frame.cummax(axis=1) assert np.shape(cummax_xs) == np.shape(datetime_frame) def test_cumulative_ops_preserve_dtypes(self): # GH#19296 dont incorrectly upcast to object df = DataFrame({"A": [1, 2, 3], "B": [1, 2, 3.0], "C": [True, False, False]}) result = df.cumsum() expected = DataFrame( { "A": Series([1, 3, 6], dtype=np.int64), "B": Series([1, 3, 6], dtype=np.float64), "C": df["C"].cumsum(), } ) tm.assert_frame_equal(result, expected)