[Python] `df.query()` in polars?

What is the equivalent of pandas.DataFrame.query in polars?

import pandas as pd
data= {
'A':["Polars","Python","Pandas"],
'B' :[23000,24000,26000],
'C':['30days', '40days',np.nan],
}

df = pd.DataFrame(data)

A B C
0 Polars 23000 30days
1 Python 24000 40days
2 Pandas 26000 NaN


Now, defining a variable item

item=24000
df.query("B>= @item")

A B C
1 Python 24000 40days
2 Pandas 26000 NaN


Now, using polars:

import polars as pl
df = pl.DataFrame(data)

item=24000
df.query("B>= @item")


I get:

AttributeError: 'DataFrame' object has no attribute 'query'


My wild guess is df.filter() but syntax does not look same and filter looks equivalent to df.loc[] as well ?

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