code: def write_parquet(df, path, mode):
      callZooFunc("float", "dfWriteParquet", df, path, mode)
  
imports: from zoo.common.utils import callZooFunc
  from pyspark.sql.types import IntegerType, ShortType, LongType, FloatType, DecimalType, DoubleType
label_desc: Use image node_id 19 for calling a global function with example usage: write_parquet(df, path, mode) without return types