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<p>我将一个包传递到python中,并期望从python udf中获得一个记录。我一定是在Outputschema中做了一些错误的事情,最后把每一列都变成了元组。非常感谢您的帮助。你知道吗</p>
<p>清管器代码:</p>
<pre><code>REGISTER 'priority.py' using jython as callme
A = LOAD 'addr_input/addr.dat' USING PigStorage(',') AS (A : chararray, B :chararray , C: chararray , ID : chararray, ID_TYPE : chararray);
B = DISTINCT A;
Z= GROUP B BY (A,B,C);
O = FOREACH Z GENERATE callme.unique_list($1) ;
DUMP O;
</code></pre>
<p>Python代码:</p>
<pre><code>@outputSchema('relationships:{t:(A : chararray, B :chararray , C: chararray , ID : chararray, ID_TYPE : chararray)}')
def unique_list(input):
my_list = list(input)
print(my_list)
last_list = []
zipcnt = -1
citicnt = -1
countycnt = -1
statecnt = -1
return_list_zip = []
return_list_city = []
return_list_county = []
return_list_state = []
return_list_country = []
for j in range(len(my_list)):
if(my_list[j][4]) == "zip":
zipcnt = len(my_list)
return_list_zip = list(my_list[j])
continue
elif (my_list[j][4] == 'city' and zipcnt == -1):
citicnt = len(my_list)
return_list_city = list(my_list[j])
continue
elif (my_list[j][4] == 'county' and zipcnt == -1 and citicnt == -1):
countycnt = len(my_list)
return_list_county = list(my_list[j])
continue
elif (my_list[j][4] == 'state'and zipcnt == -1 and citicnt == -1 and countycnt == -1):
statecnt = len(my_list)
return_list_state = list(my_list[j])
continue
elif (my_list[j][4] == 'country'and zipcnt == -1 and citicnt == -1 and countycnt == -1 and statecnt == -1):
return_list_country = list(my_list[j])
continue
if(zipcnt != -1):
return_list = return_list_zip
elif(citicnt != -1):
return_list = return_list_city
elif(countycnt != -1):
return_list = return_list_county
elif (statecnt != -1):
return_list = return_list_state
else:
return_list = return_list_country
return return_list
</code></pre>
<p>我得到的输出:</p>
<pre><code>({(aa),(bb),(cc),(1),(zip)})
({(lll),(ccc),(ddd),(6),(city)})
({(lll),(ccc),(xxx),(7),(country)})
({(mmm),(nnn),(cc),(4),(zip)})
</code></pre>
<p>---每一列都以元组的形式出现!你知道吗</p>
<p>我期望的输出:</p>
<pre><code> {aa,bb,cc,1,zip}
{lll,ccc,ddd,6,city}
</code></pre>
<p>非常感谢你的帮助。你知道吗</p>