File "/path/cmd.py", line 4, in <module>
    sparkValues = SQLContext.read.parquet('/a/file/ranks.parquet');
AttributeError: 'property' object has no attribute 'parquet'

from pyspark import SparkConf, SparkContext
from pyspark.sql import SQLContext

sparkValues = SQLContext.read.parquet('/a/file/ranks.parquet');
pandaValues = sparkValues.toPandas();
pandaValues.to_csv('/a/file/ranks.csv');