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CentOS7 下的 nltk 启动问题
CentOS 7,Python 3.6,ipython 6.0.0
问题描述
ipython
启动 ipython 命令
import nltk
爆出以下的错误信息:
In [1]: import nltk
---------------------------------------------------------------------------
ModuleNotFoundError Traceback (most recent call last)
<ipython-input-1-b06499430ee0> in <module>()
----> 1 import nltk
/opt/python36env/lib/python3.6/site-packages/nltk/__init__.py in <module>()
135 from nltk.translate import *
136 from nltk.sem import *
--> 137 from nltk.stem import *
138
139 # Packages which can be lazily imported
/opt/python36env/lib/python3.6/site-packages/nltk/stem/__init__.py in <module>()
27 from nltk.stem.isri import ISRIStemmer
28 from nltk.stem.porter import PorterStemmer
---> 29 from nltk.stem.snowball import SnowballStemmer
30 from nltk.stem.wordnet import WordNetLemmatizer
31 from nltk.stem.rslp import RSLPStemmer
/opt/python36env/lib/python3.6/site-packages/nltk/stem/snowball.py in <module>()
24
25 from nltk import compat
---> 26 from nltk.corpus import stopwords
27 from nltk.stem import porter
28 from nltk.stem.util import suffix_replace
/opt/python36env/lib/python3.6/site-packages/nltk/corpus/__init__.py in <module>()
64 from nltk.tokenize import RegexpTokenizer
65 from nltk.corpus.util import LazyCorpusLoader
---> 66 from nltk.corpus.reader import *
67
68 abc = LazyCorpusLoader(/opt/python36env/lib/python3.6/site-packages/nltk/corpus/reader/__init__.py in <module>()
103 from nltk.corpus.reader.categorized_sents import *
104 from nltk.corpus.reader.comparative_sents import *
--> 105 from nltk.corpus.reader.panlex_lite import *
106
107 # Make sure that nltk.corpus.reader.bracket_parse gives the module, not
/opt/python36env/lib/python3.6/site-packages/nltk/corpus/reader/panlex_lite.py in <module>()
13
14 import os
---> 15 import sqlite3
16
17 from nltk.corpus.reader.api import CorpusReader
/usr/local/lib/python3.6/sqlite3/__init__.py in <module>()
21 # 3. This notice may not be removed or altered from any source distribution.
22
---> 23 from sqlite3.dbapi2 import *
/usr/local/lib/python3.6/sqlite3/dbapi2.py in <module>()
25 import collections.abc
26
---> 27 from _sqlite3 import *
28
29 paramstyle = "qmark"
ModuleNotFoundError: No module named '_sqlite3'
从错误信息来分析,可以发现,就是 sqlite3 找不到而已。
问题分析与解决
那就尝试看看 sqlite3 是否已经安装:
yum search sqlite3
yum search sqlite3
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
=============================================================================== N/S matched: sqlite3 ================================================================================
libsqlite3x.x86_64 : A C++ Wrapper for the SQLite3 embeddable SQL database engine
libsqlite3x-devel.x86_64 : Development files for libsqlite3x
preludedb-sqlite3.x86_64 : Plugin to use prelude with a SQLite3 database
rubygem-sqlite3.x86_64 : Allows Ruby scripts to interface with a SQLite3 database
rubygem-sqlite3-doc.noarch : Documentation for rubygem-sqlite3
soci-sqlite3.x86_64 : SQLite3 back-end for soci
soci-sqlite3-devel.x86_64 : SQLite3 back-end for soci
uwsgi-plugin-sqlite3.x86_64 : uWSGI - SQLite3 plugin
dspam-sqlite3.x86_64 : SQLite v3.x storage driver for libdspam
golang-googlecode-sqlite-devel.i686 : Trivial sqlite3 binding for Go
golang-googlecode-sqlite-devel.x86_64 : Trivial sqlite3 binding for Go
libsq3.x86_64 : A C++ Wrapper for the SQLite3 embeddable SQL database engine
libsq3-devel.x86_64 : Development files for libsqlite3x
opendbx-sqlite.x86_64 : SQLite 3 backend - provides sqlite3 support in opendbx
python-sqlite3dbm.noarch : SQLite-backed dictionary conforming to the dbm interface
sqlite-devel.i686 : Development tools for the sqlite3 embeddable SQL database engine
sqlite-devel.x86_64 : Development tools for the sqlite3 embeddable SQL database engine
sqlite-tcl.x86_64 : Tcl module for the sqlite3 embeddable SQL database engine
sqlite3-dbf.x86_64 : Converter of XBase / FoxPro tables to SQLite
zabbix20-proxy-sqlite3.x86_64 : Zabbix proxy compiled to use SQLite
zabbix22-dbfiles-sqlite3.noarch : Zabbix database schemas and patches
zabbix22-proxy-sqlite3.x86_64 : Zabbix proxy compiled to use SQLite
找到了 sqlite3-devel,那就安装好了
yum install sqlite-devel
yum install sqlite-devel
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running transaction check
---> Package sqlite-devel.x86_64 0:3.7.17-8.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
=====================================================================================================================================================================================
Package Arch Version Repository Size
=====================================================================================================================================================================================
Installing:
sqlite-devel x86_64 3.7.17-8.el7 base 104 k
Transaction Summary
=====================================================================================================================================================================================
Install 1 Package
Total download size: 104 k
Installed size: 366 k
Is this ok [y/d/N]: y
Downloading packages:
sqlite-devel-3.7.17-8.el7.x86_64.rpm | 104 kB 00:00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : sqlite-devel-3.7.17-8.el7.x86_64 1/1
Verifying : sqlite-devel-3.7.17-8.el7.x86_64 1/1
Installed:
sqlite-devel.x86_64 0:3.7.17-8.el7
Complete!
问题没有解决
重新启动 ipython
import nltk
但是问题依然存在,哪里出的问题呢?
问题最终解决
虽然安装了 sqlite3 的数据库,但是对于 ipython 的环境来说,确实无法找到 sqlite3。
于是,我重新编译,并且安装了一下 python3。
注意: 这个是在 sqlite3 安装成功之后,在安装 python 的运行环境。
于是重新启动 ipython,问题消逝,一切正常,本质上就是 sqlite3 的安装,以及 sqlite3 与 python 运行环境之间的匹配的问题。
更多 SQLite 相关教程见以下内容:
如何在 Ubuntu 15.04 上安装带 JSON 支持的 SQLite 3.9.1 http://www.linuxidc.com/Linux/2016-02/128209.htm
SQLite3 简单操作 http://www.linuxidc.com/Linux/2016-01/127969.htm
SQLite3 中存储类型和数据类型结合文档解析 http://www.linuxidc.com/Linux/2015-08/121971.htm
SQLite3 安装、基本操作 http://www.linuxidc.com/Linux/2012-05/60452.htm
Ubuntu 12.04 下 SQLite 数据库简单应用 http://www.linuxidc.com/Linux/2012-06/63379.htm
Ubuntu 12.04 下安装 SQLite 及其使用方法 http://www.linuxidc.com/Linux/2013-08/89155.htm
SQLite 数据库入门基础教程 http://www.linuxidc.com/Linux/2014-06/103587.htm
SQLite 的详细介绍:请点这里
SQLite 的下载地址:请点这里
本文永久更新链接地址:http://www.linuxidc.com/Linux/2017-07/145464.htm