series_value_counts.py

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"""
Expect Series:
3.0    2
4.0    1
2.0    1
1.0    1
dtype: int64
"""
import pandas as pd
import numpy as np
from numba import njit


@njit
def series_value_counts():
    s = pd.Series([3, 1, 2, 3, 4, np.nan])
    out_series = s.value_counts()

    return out_series


print(series_value_counts())