[Python] polars - no attribute 'extract_many'

Trying this in Polars 0.20.23 but getting any error.

import polars as pl

# Sample data
data = {
"text": [
"Year: 2020, Month: January",
"Year: 2021, Month: February",
"Year: 2022, Month: March",
"Year: 2023, Month: April"
]
}

# Create a Polars DataFrame
df = pl.DataFrame(data)

# Define a regular expression pattern to extract year and month
pattern = r"Year: (\d{4}), Month: (\w+)"

# Use extract_many to extract year and month
df_extracted = df.with_columns(
pl.col("text").str.extract_many(pattern).alias("year_month")
)

# Display the DataFrame with extracted values
print(df_extracted)



error

AttributeError: 'ExprStringNameSpace' object has no attribute 'extract_many'


What am I doing wrong?

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