How can Python Polars parse date information from an epoch?

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Python Polars can parse date information from an epoch by using the from_numpy_datetime function. This function can be used to create a Polars dataframe column containing dates from an epoch in nanoseconds. Here's an example code snippet that demonstrates this:

import polars as pl import numpy as np # Create a numpy array containing epoch timestamps in nanoseconds epoch_array = np.array([1556758800000000000, 1556758860000000000, 1556758920000000000, 1556758980000000000]) # Create a Polars dataframe column from the numpy array date_column = pl.Series.from_numpy_datetime(epoch_array) # Print the date column print(date_column) 

In this example, we first create a numpy array containing epoch timestamps in nanoseconds. We then use the from_numpy_datetime function to create a Polars dataframe column from the numpy array. Finally, we print the date column to verify that it contains the expected date values.