[StackOverflow/python] Unable to import SparkSession in Pyspark

### ROOT CAUSE The issue arises when PySpark is not properly installed or there's a version mismatch between the PySpark library and the underlying Spark installation. The error indicates that the `pyspark` package is missing or corrupted, preventing the import of `SparkSession`. ### CODE FIX 1. **Install PySpark** using pip: ```bash pip install pyspark ``` 2. **Verify the installation** by checking the version in Python: ```python import pyspark print(pyspark.__version__) ``` 3. **Ensure compatibility** between PySpark and Spark versions. Use the correct PySpark version matching your Spark distribution (e.g., for Apache Spark 3.x, use `pyspark==3.x.x`). 4. **Reinstall if needed**: ```bash pip uninstall pyspark pip install pyspark ``` 5. **Check environment** (if using a cluster like YARN or Kubernetes): ```python from pyspark.sql import SparkSession spark = SparkSession.builder.getOrCreate() print(spark.sparkContext._jsc.version()) ``` If the issue persists, inspect Spark's configuration files or consult the [PySpark documentation](https://spark.apache.org/docs/latest/api/python/index.html) for version-specific setup.