**Logic**: Read text → split into words → explode array to rows → group by word → count. **Code**: `from pyspark.sql import SparkSession; from pyspark.sql import functions as F; spark = SparkSession.builder.appName("WordCount").getOrCreate(); df = spark.read.text("path/to/file.txt"); words = df.select(F.explode(F.split(F.col("value"), "\\s+")).alias("word")); word_counts = words.groupBy("word").count(); word_counts.show()`....
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