言語処理100本ノック 2015

64.

MongoDBの構築
http://www.cl.ecei.tohoku.ac.jp/nlp100/
「アーティスト情報（artist.json.gz）をデータベースに登録せよ．さらに，次のフィールドでインデックスを作成せよ: name, aliases.name, tags.value, rating.value．」
素人の言語処理100本ノック:64
https://qiita.com/segavvy/items/8f93187ec89f4831d863

./p64.py
Traceback (most recent call last):
  File "./p64.py", line 28, in <module>
    collection.insert_many(buf)
  File "/opt/conda/lib/python3.7/site-packages/pymongo/collection.py", line 753, in insert_many
    blk.execute(write_concern, session=session)
  File "/opt/conda/lib/python3.7/site-packages/pymongo/bulk.py", line 521, in execute
    return self.execute_command(generator, write_concern, session)
  File "/opt/conda/lib/python3.7/site-packages/pymongo/bulk.py", line 344, in execute_command
    with client._tmp_session(session) as s:
  File "/opt/conda/lib/python3.7/contextlib.py", line 112, in __enter__
    return next(self.gen)
  File "/opt/conda/lib/python3.7/site-packages/pymongo/mongo_client.py", line 1576, in _tmp_session
    s = self._ensure_session(session)
  File "/opt/conda/lib/python3.7/site-packages/pymongo/mongo_client.py", line 1563, in _ensure_session
    return self.__start_session(True, causal_consistency=False)
  File "/opt/conda/lib/python3.7/site-packages/pymongo/mongo_client.py", line 1516, in __start_session
    server_session = self._get_server_session()
  File "/opt/conda/lib/python3.7/site-packages/pymongo/mongo_client.py", line 1549, in _get_server_session
    return self._topology.get_server_session()
  File "/opt/conda/lib/python3.7/site-packages/pymongo/topology.py", line 427, in get_server_session
    None)
  File "/opt/conda/lib/python3.7/site-packages/pymongo/topology.py", line 199, in _select_servers_loop
    self._error_message(selector))
pymongo.errors.ServerSelectionTimeoutError: localhost:27017: [Errno 111] Connection refused

ソースは下記（コマンドとして実行したく１行目追記）

#!/usr/bin/env python
# coding: utf-8

import gzip
import json
import pymongo
from pymongo import MongoClient

fname = 'artist.json.gz'
unit_bulk = 10000       # バルクインサートする単位（件）

# MongoDBのデータベースtestdbにコレクションartistを作成
client = MongoClient()
db = client.testdb
collection = db.artist

# gzファイル読み込み
with gzip.open(fname, 'rt') as data_file:

    # 1行ずつパースしてbufに詰め込む
    buf = []
    for i, line in enumerate(data_file, 1):
        data_json = json.loads(line)
        buf.append(data_json)

        # unit_bulk件たまったらartistへバルクインサート
        if i % unit_bulk == 0:
            collection.insert_many(buf)
            buf = []
            print('{}件追加完了'.format(i))

    # 最後のunit_bulkに入らなかった半端分の追加
    if len(buf) > 0:
        collection.insert_many(buf)
        print('{}件追加完了'.format(i))

# インデックス作成
collection.create_index([('name', pymongo.ASCENDING)])
collection.create_index([('aliases.name', pymongo.ASCENDING)])
collection.create_index([('tags.value', pymongo.ASCENDING)])
collection.create_index([('rating.value', pymongo.ASCENDING)])

p65.py

# ./p65.py
Traceback (most recent call last):
  File "./p65.py", line 17, in <module>
    for i, doc in enumerate(collection.find({'name': 'Queen'}), start=1):
  File "/opt/conda/lib/python3.7/site-packages/pymongo/cursor.py", line 1189, in next
    if len(self.__data) or self._refresh():
  File "/opt/conda/lib/python3.7/site-packages/pymongo/cursor.py", line 1087, in _refresh
    self.__session = self.__collection.database.client._ensure_session()
  File "/opt/conda/lib/python3.7/site-packages/pymongo/mongo_client.py", line 1563, in _ensure_session
    return self.__start_session(True, causal_consistency=False)
  File "/opt/conda/lib/python3.7/site-packages/pymongo/mongo_client.py", line 1516, in __start_session
    server_session = self._get_server_session()
  File "/opt/conda/lib/python3.7/site-packages/pymongo/mongo_client.py", line 1549, in _get_server_session
    return self._topology.get_server_session()
  File "/opt/conda/lib/python3.7/site-packages/pymongo/topology.py", line 427, in get_server_session
    None)
  File "/opt/conda/lib/python3.7/site-packages/pymongo/topology.py", line 199, in _select_servers_loop
    self._error_message(selector))
pymongo.errors.ServerSelectionTimeoutError: localhost:27017: [Errno 111] Connection refused

#p67.py

# ./p67.py
アーティストの別名を入力して下さい--> beethoven
Traceback (most recent call last):
  File "./p67.py", line 19, in <module>
    for i, doc in enumerate(collection.find({'aliases.name': clue}), start=1):
  File "/opt/conda/lib/python3.7/site-packages/pymongo/cursor.py", line 1189, in next
    if len(self.__data) or self._refresh():
  File "/opt/conda/lib/python3.7/site-packages/pymongo/cursor.py", line 1087, in _refresh
    self.__session = self.__collection.database.client._ensure_session()
  File "/opt/conda/lib/python3.7/site-packages/pymongo/mongo_client.py", line 1563, in _ensure_session
    return self.__start_session(True, causal_consistency=False)
  File "/opt/conda/lib/python3.7/site-packages/pymongo/mongo_client.py", line 1516, in __start_session
    server_session = self._get_server_session()
  File "/opt/conda/lib/python3.7/site-packages/pymongo/mongo_client.py", line 1549, in _get_server_session
    return self._topology.get_server_session()
  File "/opt/conda/lib/python3.7/site-packages/pymongo/topology.py", line 427, in get_server_session
    None)
  File "/opt/conda/lib/python3.7/site-packages/pymongo/topology.py", line 199, in _select_servers_loop
    self._error_message(selector))
pymongo.errors.ServerSelectionTimeoutError: localhost:27017: [Errno 111] Connection refused

p68.py

# ./p68.py
Traceback (most recent call last):
  File "./p68.py", line 16, in <module>
    for i, doc in enumerate(results[0:10], start=1):
  File "/opt/conda/lib/python3.7/site-packages/pymongo/cursor.py", line 1189, in next
    if len(self.__data) or self._refresh():
  File "/opt/conda/lib/python3.7/site-packages/pymongo/cursor.py", line 1087, in _refresh
    self.__session = self.__collection.database.client._ensure_session()
  File "/opt/conda/lib/python3.7/site-packages/pymongo/mongo_client.py", line 1563, in _ensure_session
    return self.__start_session(True, causal_consistency=False)
  File "/opt/conda/lib/python3.7/site-packages/pymongo/mongo_client.py", line 1516, in __start_session
    server_session = self._get_server_session()
  File "/opt/conda/lib/python3.7/site-packages/pymongo/mongo_client.py", line 1549, in _get_server_session
    return self._topology.get_server_session()
  File "/opt/conda/lib/python3.7/site-packages/pymongo/topology.py", line 427, in get_server_session
    None)
  File "/opt/conda/lib/python3.7/site-packages/pymongo/topology.py", line 199, in _select_servers_loop
    self._error_message(selector))
pymongo.errors.ServerSelectionTimeoutError: localhost:27017: [Errno 111] Connection refused

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