PySpark emulator — Polars for DataFrames, DuckDB for SQL, fake HDFS on local filesystem
Project description
singlespark
PySpark emulator — no JVM required.
- Polars for DataFrame operations
- DuckDB for Spark SQL
- Local filesystem for fake HDFS
Quick start
from singlespark import SparkSession
from singlespark.sql import functions as F
spark = SparkSession.builder.appName("MyApp").getOrCreate()
df = spark.createDataFrame([("Alice", 30), ("Bob", 25)], ["name", "age"])
df.filter(F.col("age") > 26).show()
spark.stop()
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