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6 lines
236 B
Python
6 lines
236 B
Python
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import pandas as pd
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import numpy as np
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def get_first_valid_return_index(series: pd.Series) -> int:
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first_nonzero_return = np.where(np.logical_and(series != 0, np.logical_not(np.isnan(series))))[0][0]
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return first_nonzero_return
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