how to install pydoop.mapreduce for Python. Need to run: import pydoop.mapreduce.api as api

import pydoop.mapreduce.pipes as pp

class Mapper$($api$.$Mapper$)$:

def map$($self$,$ context$)$:

row $=$ context.value.strip$().$split$(",")$

context.emit$($row$[1],$ row$[25])$

class Reducer$($api$.$Reducer$)$:

def reduce$($self$,$ context$)$:

yards $=$ context.values

count $=0$

total$\_$yards $=0$

for yard in yards:

if yard $!="$NA$"$:

count $+=1$

total$\_$yards $+=$ int$($yard$)$

if count $>0$:

avg$\_$yards $=$ total$\_$yards $/$ count

context.emit$($context$.$key, avg$\_$yards$)$

def $\_\_$main$\_\_()$:

pp$.$run$\_$task$($pp$.$Factory$($Mapper$,$ Reducer$))$ and getting error. Need output for this code.