{"library":"fastparquet","title":"fastparquet","description":"fastparquet is a Python library providing performant read/write support for the Parquet file format, without needing a Python-Java bridge. It integrates well with Python-based big data workflows, particularly Dask and Pandas (versions < 3.0). As of March 2026, with Pandas 3.0 explicitly depending on PyArrow, `fastparquet` is being retired, and no further development is anticipated, though it remains usable for Pandas 2.x users.","language":"python","status":"deprecated","last_verified":"Wed May 20","install":{"commands":["pip install fastparquet"],"cli":null},"imports":["from fastparquet import ParquetFile","from fastparquet import write"],"auth":{"required":false,"env_vars":[]},"quickstart":{"code":"import pandas as pd\nfrom fastparquet import write, ParquetFile\nimport os\n\n# Create a sample DataFrame\ndf = pd.DataFrame({\n    'col1':,\n    'col2': ['A', 'B', 'C', 'D'],\n    'col3': [True, False, True, False]\n})\n\nfilename = \"example.parquet\"\n\n# Write the DataFrame to a Parquet file with Snappy compression\nwrite(filename, df, compression='SNAPPY')\nprint(f\"DataFrame successfully written to '{filename}'.\")\n\n# Read the Parquet file back into a DataFrame\npf = ParquetFile(filename)\ndf_read = pf.to_pandas()\nprint(f\"DataFrame successfully read from '{filename}':\")\nprint(df_read)\n\n# Clean up the created file\nos.remove(filename)","lang":"python","description":"This quickstart demonstrates how to create a Pandas DataFrame, write it to a Parquet file using `fastparquet.write`, and then read the data back into a new DataFrame using `fastparquet.ParquetFile.to_pandas()`. 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