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duckdb.read_parquet(uploaded_file) doesn't accept filepath like duckdb.read_csv(uploaded_file) does #216
In Streamlit, CSV file uploaded via streamlit.file_uploader can be parsed with duckdb.read_csv(uploaded_file) without issue.
However, using similar method to parse parquet file failed: duckdb.read_parquet(uploaded_file) despite filepath is stated to be the permitted argument. (source1) (source2)
Any parquet file should allow reproduction of the bug.
import streamlit as st
import duckdb
import polars as pl
uploaded_file = st.file_uploader("Choose a file", type=["csv", "parquet"])
if uploaded file is not None:
df = duckdb.read_parquet(uploaded_file).pl()
st.dataframe(df.head())
OS:
Windows 11 Enterprise x86_64
DuckDB Package Version:
1.4.2
Python Version:
3.12.7
Full Name:
Anthony Who
Affiliation:
JP Morgan
What is the latest build you tested with? If possible, we recommend testing with the latest nightly build.
I have tested with a stable release
Did you include all relevant data sets for reproducing the issue?
Not applicable - the reproduction does not require a data set
Did you include all code required to reproduce the issue?
Yes, I have
Did you include all relevant configuration to reproduce the issue?
Activity
evertlammerts commentedon Jun 11, 2026
This is fixed in #489 and will be available in v1.5.4