Ranking in PySpark

from pyspark.sql.functions import col, desc
from pyspark.sql import Window
import pyspark.sql.functions as psf

# Create a dataframe for just 2008 data
df08 = df_renamed_dest.filter(col("flight_year") == 2008)

# Create a dataframe for total inbound passengers of each airport
ranked = df08.groupBy("destination_airport_name").sum("passengers")

# Use Window to order and rank by the number of inbound passengers
windowA = Window.orderBy(psf.desc("sum(passengers)"))
dfr = ranked.withColumn("Rank", psf.dense_rank().over(windowA))