polars.Series.bin.starts_with#

Series.bin.starts_with(prefix: IntoExpr) → Series[source]#

Check if values start with a binary substring.

Parameters:

prefix: Prefix substring.

Examples

>>> s = pl.Series("colors", [b"\x00\x00\x00", b"\xff\xff\x00", b"\x00\x00\xff"])
>>> s.bin.starts_with(b"\x00")
shape: (3,)
Series: 'colors' [bool]
[
    true
    false
    true
]