[Python] Converting string to DateTime Polars

I have a Polars dataframe with a column of type str with the date and time

df = pl.from_repr("""
┌─────────────────────────┐
│ EventTime │
│ --- │
│ str │
╞═════════════════════════╡
│ 2020-03-02T13:10:42.550 │
└─────────────────────────┘
""")


I want to convert this column to the polars.Datetime type.

After reading this post Easily convert string column to pl.datetime in Polars, I came up with:

df = df.with_columns(pl.col('EventTime').str.to_datetime("%Y-%m-%dT%H:%M:%f", strict=False))


However, the values my column "EventTime' are all null.

Many Thanks!

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