stuck on example 5-4:

[3gon]

Hello there,

I have been really enjoying working through this book, but I cannot seem to get example 5-4 to run. I successfully ran example 5-3 and harvested the tweets from a timeline, and I know that CouchDB is otherwise working well. I noticed in the errata for the book that someone else has submitted the same error that I am about to describe, so hopefully you can point me in the right direction. I am new to python so I am probably overlooking something very obvious. Any help is greatly appreciated!

This is what I see in Terminal:

Traceback (most recent call last): File "tweet_freq.py", line 82, in db.view('index/entity_count_by_doc', group=True)], File "build/bdist.macosx-10.6-intel/egg/couchdb/client.py", line 984, in iter File "build/bdist.macosx-10.6-intel/egg/couchdb/client.py", line 1003, in rows File "build/bdist.macosx-10.6-intel/egg/couchdb/client.py", line 990, in _fetch File "build/bdist.macosx-10.6-intel/egg/couchdb/client.py", line 880, in _exec File "build/bdist.macosx-10.6-intel/egg/couchdb/http.py", line 393, in get_json File "build/bdist.macosx-10.6-intel/egg/couchdb/http.py", line 374, in get File "build/bdist.macosx-10.6-intel/egg/couchdb/http.py", line 419, in _request File "build/bdist.macosx-10.6-intel/egg/couchdb/http.py", line 310, in request couchdb.http.ServerError: (500, (u'EXIT', u'{{badmatch,[]},\n [{couch_query_servers,new_process,3,\n [{file,"/Users/hs/prj/build-couchdb/dependencies/couchdb/src/couchdb/couch_query_servers.erl"},\n {line,472}]},\n {couch_query_servers,lang_proc,3,\n [{file,"/Users/hs/prj/build-couchdb/dependencies/couchdb/src/couchdb/couch_query_servers.erl"},\n {line,462}]},\n {couch_query_servers,handle_call,3,\n [{file,"/Users/hs/prj/build-couchdb/dependencies/couchdb/src/couchdb/couch_query_servers.erl"},\n {line,334}]},\n {gen_server,handle_msg,5,[{file,"gen_server.erl"},{line,578}]},\n {proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,227}]}]}'))

When I go into CouchDB Futon, I see that the entity_count_by_doc document HAS been created, but I get the following error popup:

Error: EXIT

{{badmatch,[]}, [{couch_query_servers,new_process,3, [{file,"/Users/hs/prj/build-couchdb/dependencies/couchdb/src/couchdb/couch_query_servers.erl"}, {line,472}]}, {couch_query_servers,lang_proc,3, [{file,"/Users/hs/prj/build-couchdb/dependencies/couchdb/src/couchdb/couch_query_servers.erl"}, {line,462}]}, {couch_query_servers,handle_call,3, [{file,"/Users/hs/prj/build-couchdb/dependencies/couchdb/src/couchdb/couch_query_servers.erl"}, {line,334}]}, {gen_server,handle_msg,5,[{file,"gen_server.erl"},{line,578}]}, {proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,227}]}]}

Any advice at all would be so helpful. I look forward to your response and suggestions.

[3gon]

MY BAD. Forgot to install couchpy. Leaving this issue posted in case anyone has same issue as I did.

DIFFERENT ERROR THAT IS ACTUALLY AN ERROR: Prettytables is now at 0.6, not 0.5 as it was when the book was written, so the table code does need to be changed. I will post it when I figure it out. But the rest of the code works fine as long as you install couchpy and edit the local.ini file as instructed in the book (see p. 53).

[3gon]

replace lines 85-93 with the following code to make it compatible with PrettyTable 0.6 (I am SURE there is a slicker way of doing this, but this code works. If you have a more elegant strategy, please post it.)

fields = (['Entity', 'Count']) pt = PrettyTable(field_names=fields) field_names=fields pt.align ="l"

for (entity, freq) in entities_freqs: if freq > FREQ_THRESHOLD: pt.add_row([entity, freq])

print pt.get_string()