JamesJohnson•6d ago

Receiving Error: Invalid Time

This morning I updated to Marimo 0.9.15 and now I'm receiving an "Error: Invalid time value" when trying to display an Ibis or a Polars dataframe that contains a timestamp column that is null. Here's some simple code that replicates what I'm seeing:

df = (
    pl.date_range(date(2001, 1, 1), date(2001, 1, 3), eager=True)
    .alias("date")
    .to_frame()
)
df.with_columns(
    pl.col("date").dt.timestamp().alias("timestamp_us"),
    pl.col("date").dt.timestamp("ms").alias("timestamp_ms"),
    pl.lit(None).cast(pl.Datetime).alias("test")
)

df = (
    pl.date_range(date(2001, 1, 1), date(2001, 1, 3), eager=True)
    .alias("date")
    .to_frame()
)
df.with_columns(
    pl.col("date").dt.timestamp().alias("timestamp_us"),
    pl.col("date").dt.timestamp("ms").alias("timestamp_ms"),
    pl.lit(None).cast(pl.Datetime).alias("test")
)

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