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"""
We also test Series.notna in this file.
"""
import numpy as np
from pandas import (
Period,
Series,
)
import pandas._testing as tm
class TestIsna:
def test_isna_period_dtype(self):
# GH#13737
ser = Series([Period("2011-01", freq="M"), Period("NaT", freq="M")])
expected = Series([False, True])
result = ser.isna()
tm.assert_series_equal(result, expected)
result = ser.notna()
tm.assert_series_equal(result, ~expected)
def test_isna(self):
ser = Series([0, 5.4, 3, np.nan, -0.001])
expected = Series([False, False, False, True, False])
tm.assert_series_equal(ser.isna(), expected)
tm.assert_series_equal(ser.notna(), ~expected)
ser = Series(["hi", "", np.nan])
expected = Series([False, False, True])
tm.assert_series_equal(ser.isna(), expected)
tm.assert_series_equal(ser.notna(), ~expected)