Spark - How to write a single csv file WITHOUT folder?

Question

Suppose that df is a dataframe in Spark. The way to write df into a single CSV file is

df.coalesce(1).write.option(\"header\", \"tru

Answer 1

For pyspark, you can convert to pandas dataframe and then save it.

df.toPandas().to_csv("/", header=True, index=False)