ImportError: libsybdb.so.5: cannot open shared object file: No such file or directory pymssql linux 问题解决 搭建驱动
[root@hadoop1 nlp]# python sqlserver_t.py
Traceback (most recent call last):
File "sqlserver_t.py", line 1, in <module>
import pymssql
ImportError: libsybdb.so.5: cannot open shared object file: No such file or directory
[root@hadoop1 nlp]# yum install freetds
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* epel: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
正在解决依赖关系
--> 正在检查事务
---> 软件包 freetds.x86_64.0.0.95.81-1.el7 将被 安装
--> 正在处理依赖关系 libodbc.so.2()(64bit)，它被软件包 freetds-0.95.81-1.el7.x86_64 需要
--> 正在处理依赖关系 libodbcinst.so.2()(64bit)，它被软件包 freetds-0.95.81-1.el7.x86_64 需要
--> 正在检查事务
---> 软件包 unixODBC.x86_64.0.2.3.1-11.el7 将被 安装
--> 解决依赖关系完成
依赖关系解决
=======================================================================================================================================================================================================
Package 架构 版本 源 大小
=======================================================================================================================================================================================================
正在安装:
freetds x86_64 0.95.81-1.el7 epel 635 k
为依赖而安装:
unixODBC x86_64 2.3.1-11.el7 base 413 k
事务概要
=======================================================================================================================================================================================================
安装 1 软件包 (+1 依赖软件包)
总下载量：1.0 M
安装大小：3.9 M
Is this ok [y/d/N]: y
Downloading packages:
(1/2): unixODBC-2.3.1-11.el7.x86_64.rpm | 413 kB 00:00:01
(2/2): freetds-0.95.81-1.el7.x86_64.rpm | 635 kB 00:00:13
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
总计 76 kB/s | 1.0 MB 00:00:13
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
正在安装 : unixODBC-2.3.1-11.el7.x86_64 1/2
正在安装 : freetds-0.95.81-1.el7.x86_64 2/2
warning: /etc/freetds.conf created as /etc/freetds.conf.rpmnew
验证中 : unixODBC-2.3.1-11.el7.x86_64 1/2
验证中 : freetds-0.95.81-1.el7.x86_64 2/2
已安装:
freetds.x86_64 0:0.95.81-1.el7
作为依赖被安装:
unixODBC.x86_64 0:2.3.1-11.el7
完毕！
[root@hadoop1 nlp]# find / | grep pymyssql
[root@hadoop1 nlp]# find / | grep pymssql
/home/data/test_xiaole/mylocalproject_BASE_OLD_framework/trunk/plugins/nlp/pymssql_test.py
/home/data/xl_tmp/C/Users/Administrator.PC-201707311140/.PyCharmCE2017.2/system/python_stubs/-1023133876/pymssql.py
/home/hadoop/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/__pycache__/pymssql.cpython-36.pyc
/home/hadoop/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/pymssql.py
/home/hadoop/anaconda3/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/__pycache__/pymssql.cpython-36.pyc
/home/hadoop/anaconda3/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/pymssql.py
/home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql.cpython-36m-x86_64-linux-gnu.so
/home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql-2.1.3.dist-info
/home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql-2.1.3.dist-info/DESCRIPTION.rst
/home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql-2.1.3.dist-info/metadata.json
/home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql-2.1.3.dist-info/top_level.txt
/home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql-2.1.3.dist-info/WHEEL
/home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql-2.1.3.dist-info/METADATA
/home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql-2.1.3.dist-info/RECORD
/home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql-2.1.3.dist-info/INSTALLER
/home/hadoop/.pycharm_helpers/typeshed/third_party/2/pymssql.pyi
/root/.cache/pip/wheels/c1/1e/75/bc600eb8a5c9ed77fb1edf15ae5a48b5b427b0390c9a7c9dff/pymssql-2.1.3-cp36-cp36m-linux_x86_64.whl
/root/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/__pycache__/pymssql.cpython-36.pyc
/root/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/pymssql.py
/root/anaconda3/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/__pycache__/pymssql.cpython-36.pyc
/root/anaconda3/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/pymssql.py
/root/.pycharm_helpers/typeshed/third_party/2/pymssql.pyi
[root@hadoop1 nlp]# rm -rf /home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql
[root@hadoop1 nlp]# rm -f /root/.cache/pip/wheels/c1/1e/75/bc600eb8a5c9ed77fb1edf15ae5a48b5b427b0390c9a7c9dff/pymssql-2.1.3-cp36-cp36m-linux_x86_64.whl
[root@hadoop1 nlp]# rm -rf /root/anaconda3/lib/python3.6/site-packages/sqlalchemy/dialects/*mssql*
[root@hadoop1 nlp]# find / | grep pymssql
/home/data/test_xiaole/mylocalproject_BASE_OLD_framework/trunk/plugins/nlp/pymssql_test.py
/home/data/xl_tmp/C/Users/Administrator.PC-201707311140/.PyCharmCE2017.2/system/python_stubs/-1023133876/pymssql.py
/home/hadoop/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/__pycache__/pymssql.cpython-36.pyc
/home/hadoop/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/pymssql.py
/home/hadoop/anaconda3/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/__pycache__/pymssql.cpython-36.pyc
/home/hadoop/anaconda3/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/pymssql.py
/home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql.cpython-36m-x86_64-linux-gnu.so
/home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql-2.1.3.dist-info
/home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql-2.1.3.dist-info/DESCRIPTION.rst
/home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql-2.1.3.dist-info/metadata.json
/home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql-2.1.3.dist-info/top_level.txt
/home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql-2.1.3.dist-info/WHEEL
/home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql-2.1.3.dist-info/METADATA
/home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql-2.1.3.dist-info/RECORD
/home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql-2.1.3.dist-info/INSTALLER
/home/hadoop/.pycharm_helpers/typeshed/third_party/2/pymssql.pyi
/root/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/__pycache__/pymssql.cpython-36.pyc
/root/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/pymssql.py
/root/.pycharm_helpers/typeshed/third_party/2/pymssql.pyi
[root@hadoop1 nlp]# rm -rf /home/hadoop/anaconda3/lib/python3.6/site-packages/pymssql*
[root@hadoop1 nlp]# find / | grep pymssql
/home/data/test_xiaole/mylocalproject_BASE_OLD_framework/trunk/plugins/nlp/pymssql_test.py
/home/data/xl_tmp/C/Users/Administrator.PC-201707311140/.PyCharmCE2017.2/system/python_stubs/-1023133876/pymssql.py
/home/hadoop/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/__pycache__/pymssql.cpython-36.pyc
/home/hadoop/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/pymssql.py
/home/hadoop/anaconda3/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/__pycache__/pymssql.cpython-36.pyc
/home/hadoop/anaconda3/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/pymssql.py
/home/hadoop/.pycharm_helpers/typeshed/third_party/2/pymssql.pyi
/root/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/__pycache__/pymssql.cpython-36.pyc
/root/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/pymssql.py
/root/.pycharm_helpers/typeshed/third_party/2/pymssql.pyi
[root@hadoop1 nlp]# find / | grep pymssql
/home/data/test_xiaole/mylocalproject_BASE_OLD_framework/trunk/plugins/nlp/pymssql_test.py
/home/data/xl_tmp/C/Users/Administrator.PC-201707311140/.PyCharmCE2017.2/system/python_stubs/-1023133876/pymssql.py
/home/hadoop/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/__pycache__/pymssql.cpython-36.pyc
/home/hadoop/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/pymssql.py
/home/hadoop/anaconda3/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/__pycache__/pymssql.cpython-36.pyc
/home/hadoop/anaconda3/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/pymssql.py
/home/hadoop/.pycharm_helpers/typeshed/third_party/2/pymssql.pyi
/root/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/__pycache__/pymssql.cpython-36.pyc
/root/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/pymssql.py
/root/.pycharm_helpers/typeshed/third_party/2/pymssql.pyi
[root@hadoop1 nlp]# rm -f /root/.pycharm_helpers/typeshed/third_party/2/pymss
[root@hadoop1 nlp]# rm -f /root/.pycharm_helpers/typeshed/third_party/2/pymssql*
[root@hadoop1 nlp]# find / | grep pymssql
/home/data/test_xiaole/mylocalproject_BASE_OLD_framework/trunk/plugins/nlp/pymssql_test.py
/home/data/xl_tmp/C/Users/Administrator.PC-201707311140/.PyCharmCE2017.2/system/python_stubs/-1023133876/pymssql.py
/home/hadoop/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/__pycache__/pymssql.cpython-36.pyc
/home/hadoop/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/pymssql.py
/home/hadoop/anaconda3/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/__pycache__/pymssql.cpython-36.pyc
/home/hadoop/anaconda3/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/pymssql.py
/home/hadoop/.pycharm_helpers/typeshed/third_party/2/pymssql.pyi
/root/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/__pycache__/pymssql.cpython-36.pyc
/root/anaconda3/pkgs/sqlalchemy-1.1.13-py36hfb5efd7_0/lib/python3.6/site-packages/sqlalchemy/dialects/mssql/pymssql.py
[root@hadoop1 nlp]# yum install freetds
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* epel: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
软件包 freetds-0.95.81-1.el7.x86_64 已安装并且是最新版本
无须任何处理
[root@hadoop1 nlp]# pip install pymssql
Collecting pymssql
Using cached pymssql-2.1.3.tar.gz
Building wheels for collected packages: pymssql
Running setup.py bdist_wheel for pymssql ... done
Stored in directory: /root/.cache/pip/wheels/c1/1e/75/bc600eb8a5c9ed77fb1edf15ae5a48b5b427b0390c9a7c9dff
Successfully built pymssql
Installing collected packages: pymssql
Successfully installed pymssql-2.1.3
[root@hadoop1 nlp]# ll -as
总用量 116860
4 drwxr-xr-x 2 root root 4096 12月 14 11:27 .
0 drwxr-xr-x 8 root root 117 12月 5 16:48 ..
8 -rw-r--r-- 1 root root 5743 12月 11 16:23 db_tab_con.py
2112 -rw-r--r-- 1 root root 2161830 12月 6 09:34 list_b.sql
95660 -rw-r--r-- 1 root root 97951846 12月 13 20:02 list_b_uid_title_sina_ask.txt
4 -rw-r--r-- 1 root root 2850 12月 11 16:22 mg_sql.txt
4 -rw-r--r-- 1 root root 1838 12月 13 19:35 myltp.py
4 -rw-r--r-- 1 root root 289 12月 6 10:20 n_gram.py
4 -rw-r--r-- 1 root root 1688 12月 14 11:19 pymssql_test.py
4 -rw-r--r-- 1 root root 645 12月 6 09:20 rule_list.txt
4 -rw-r--r-- 1 root root 741 12月 14 11:27 sqlserver_t.py
4 -rw-r--r-- 1 root root 280 12月 8 16:20 t.py
120 -rw-r--r-- 1 root root 121498 12月 6 17:02 国家统计局行政区划代码.txt
14272 -rw-r--r-- 1 root root 14611853 12月 5 18:16 哪家.txt
4656 -rw-r--r-- 1 root root 4767195 12月 5 17:52 哪里.txt
[root@hadoop1 nlp]# python sqlserver_t.py
[root@hadoop1 nlp]# python sqlserver_t.py
{'c': 7855053}
{'c': 32120982}
{'c': 1861}
{'c': 15239162}
{'c': 2}
{'c': 1441829}
[root@hadoop1 nlp]# python pymssql_test.py
Traceback (most recent call last):
File "pymssql.pyx", line 635, in pymssql.connect (pymssql.c:10734)
File "_mssql.pyx", line 1902, in _mssql.connect (_mssql.c:21821)
File "_mssql.pyx", line 637, in _mssql.MSSQLConnection.__init__ (_mssql.c:6581)
File "_mssql.pyx", line 1630, in _mssql.maybe_raise_MSSQLDatabaseException (_mssql.c:17524)
_mssql.MSSQLDatabaseException: (20009, b'DB-Lib error message 20009, severity 9:\nUnable to connect: Adaptive Server is unavailable or does not exist (rm-2ze490nv1gsv17720.sqlserver.rds.aliyuncs.com:3443)\nNet-Lib error during Connection timed out (110)\n')
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "pymssql_test.py", line 38, in <module>
tds_version='7.1', conn_properties=None) as conn:
File "pymssql.pyx", line 641, in pymssql.connect (pymssql.c:10824)
pymssql.OperationalError: (20009, b'DB-Lib error message 20009, severity 9:\nUnable to connect: Adaptive Server is unavailable or does not exist (rm-2ze490nv1gsv17720.sqlserver.rds.aliyuncs.com:3443)\nNet-Lib error during Connection timed out (110)\n')
[root@hadoop1 nlp]# python pymssql_test.py
Traceback (most recent call last):
File "pymssql.pyx", line 447, in pymssql.Cursor.execute (pymssql.c:7119)
File "_mssql.pyx", line 1011, in _mssql.MSSQLConnection.execute_query (_mssql.c:11586)
File "_mssql.pyx", line 1042, in _mssql.MSSQLConnection.execute_query (_mssql.c:11466)
File "_mssql.pyx", line 1175, in _mssql.MSSQLConnection.format_and_run_query (_mssql.c:12746)
File "_mssql.pyx", line 1586, in _mssql.check_cancel_and_raise (_mssql.c:16880)
File "_mssql.pyx", line 1630, in _mssql.maybe_raise_MSSQLDatabaseException (_mssql.c:17524)
_mssql.MSSQLDatabaseException: (208, b"Invalid object name 'test'.DB-Lib error message 20018, severity 16:\nGeneral SQL Server error: Check messages from the SQL Server\n")
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "pymssql_test.py", line 41, in <module>
cursor.execute(q)
File "pymssql.pyx", line 464, in pymssql.Cursor.execute (pymssql.c:7491)
pymssql.ProgrammingError: (208, b"Invalid object name 'test'.DB-Lib error message 20018, severity 16:\nGeneral SQL Server error: Check messages from the SQL Server\n")
[root@hadoop1 nlp]# python pymssql_test.py
{'ask_id': 1, 'smqid': '6DB9EB61B93443C0B390484AAE86E423', 'siteid': 31, 'userid': 33995585, 'title': '南网通是什么时候成立的？', 'catid': 4389, 'ask_time': 1443077708, 'questionId': '0', '_catid': 4302}
{'ask_id': 2, 'smqid': '217883BA0D63413A84BC3BC42AEA5654', 'siteid': 31, 'userid': 34021057, 'title': '考博英语复习从何入手？', 'catid': 4190, 'ask_time': 1443078685, 'questionId': '0', '_catid': 3331}
{'ask_id': 3, 'smqid': 'C670683D18634C26B6FF3C9A95703B4F', 'siteid': 40, 'userid': 34019886, 'title': '深圳哪有好的不锈钢电解抛光加工厂家', 'catid': 103, 'ask_time': 1443079067, 'questionId': '0', '_catid': 1}
{'ask_id': 4, 'smqid': 'CE1B74324108405F8B3377703BBB6859', 'siteid': 31, 'userid': 34000840, 'title': '北京偶时代怎么样？', 'catid': 3989, 'ask_time': 1443079264, 'questionId': '0', '_catid': 3331}
{'ask_id': 5, 'smqid': 'A7C896B08B084CB79C85AA9A2927ABBD', 'siteid': 31, 'userid': 34027587, 'title': '铜像雕塑哪里有加工厂', 'catid': 4181, 'ask_time': 1443079286, 'questionId': '0', '_catid': 3330}
{'ask_id': 6, 'smqid': 'E90DD0E22AFE4D09AECDB959836F4428', 'siteid': 31, 'userid': 34010451, 'title': '多功能小吃车多少钱一辆？', 'catid': 4430, 'ask_time': 1443079327, 'questionId': '0', '_catid': 4303}
[root@hadoop1 nlp]#
先有驱动环境
再 pip Install
先删除之前的 pymssql
import pymssql
"""
def __init__(self, server="localhost", user="sa", password="",
charset='UTF-8', database='', appname=None, port='1433', tds_version='7.1', conn_properties=None)
"""
s, u, p, d, po,tab = 'rm-..rds.aliyuncs.com', 'sina_k', '564', 'sina_ask', '3433','st_buuu'
with pymssql.connect(server=s, user=u, password=p, charset='UTF-8', database=d, appname=None, port=po,
tds_version='7.1', conn_properties=None) as conn:
with conn.cursor(as_dict=True) as cursor:
q = '%s%s' % ('SELECT TOP 6 * FROM ', tab)
cursor.execute(q)
for row in cursor:
print(row)
d =9
ImportError: libsybdb.so.5: cannot open shared object file: No such file or directory pymssql linux 问题解决 搭建驱动的更多相关文章
- crontab,定时任务执行找不到库or shell可执行，crontab 定时任务下就不能执行,tensorflow,ImportError: libcuda.so.1: cannot open shared object file: No such file or directory
在线上启动一个定时任务,但是起来查看,发现任务执行找不到库,报cuda错误: ImportError: libcuda.so.1: cannot open shared object file: No ...
- ImportError: libcudnn.so.5: cannot open shared object file: No such file or directory
ubuntu16.04安装cuda8.0,tensorflow-gpu版本后,运行时报错: ImportError: libcudnn.so.5: cannot open shared object ...
- ImportError: libmysqlclient_r.so.16: cannot open shared object file: No such file or directory
在开发一个python项目是,需要用到mysql,但是, 安装完mysql-python后import加载模块提示以下错误: ImportError: libmysqlclient_r.so.16: ...
- 关于ImportError: libssl.so.10: cannot open shared object file: No such file or directory unable to load app 0 (mountpoint='') (callable not found or import error)
一.问题描述 在亚马逊云服务器使用Nginx+uwsgi部署django项目时,项目可以使用python manage.py runserver正常运行,uwsgi测试也没问题,Nginx也正常启动, ...
- ImportError: liblapack.so.3: cannot open shared object file问题
问题: 安装完tensorflow后,在终端输入: python import cv2 出现如下错误: ImportError: liblapack.so.3: cannot open shared ...
- 解决ImportError: libmysqlclient_r.so.16: cannot open shared object file-乾颐堂
在开发一个python项目是,需要用到mysql,但是, 安装完mysql-python后import加载模块提示以下错误: ImportError: libmysqlclient_r.so.16: ...
- ImportError: libSM.so.6: cannot open shared object file: No such file or directory
Solution sudo apt-get install libsm6 Similarly ImportError: libXrender.so.1: cannot open shared obje ...
- ImportError: libmysqlclient.so.20: cannot open shared object file: No such file or directory 解决办法
>>> import MySQLdbTraceback (most recent call last): File "<stdin>", line ...
- tensorflow 升级后报错：ImportError: libcudnn.so.6: cannot open shared object file: No such file or directory
我的tensorflow之前的版本是1.2的所以支持cudnn5,但是tensorflow1.3及以上就是支持cudnn6. 查看: /usr/local/cuda/lib64$ ls libcud ...
随机推荐
- python控制流-导入模块
一.模块 1.含义 Python 程序可以调用一组基本的函数,这称为“内建函数”,包括你见到过的 print().input()和 len()函数.Python 也包括一组模块,称为“标准库”.每个模 ...
- python 操作ssh登录
import paramiko #创建SSH对象 ssh = paramiko.SSHClient() #把要连接的机器添加到known_hosts文件中 ssh.set_missing_host_k ...
- html/css中BFC的开启、关闭、作用
什么是BFC BFC是什么并不重要.重要的是开启它干嘛?以及如何开启它 根据W3C的标准,在页面中元素都一个隐含的属性叫做Block Formatting Context(块级 格式化 环境)简称BF ...
- JAVA总结--设计模式
三大类设计模式: 创建型模式,共五种:工厂方法模式.抽象工厂模式.单例模式.建造者模式.原型模式. 结构型模式,共七种:适配器模式.装饰器模式.代理模式.外观模式.桥接模式.组合模式.享元模式. 行为 ...
- sublime text3插件安装及使用
sublime官网下载地址:http://www.sublimetext.com/ 我用的是SubLime text3,插件安装命令地址:https://packagecontrol.io/insta ...
- [BZOJ4476] [JSOI2015] 送礼物 (01分数规划+ST表)
[BZOJ4476] [JSOI2015] 送礼物 (01分数规划+ST表) 题面 给出n,k,l,r和序列a,要求从a中选一段连续的区间[i,j]出来,使得M(i,j)-m(i,j)/(j-i+k) ...
- Django中orm的惰性机制
那么首先要知道什么是ORM 专业化的角度来说:叫对象关系映射(Object-Relation Mapping)是一种为了解决面向对象与关系数据库存在的互不匹配的现象的技术. 那具体ORM是什么呢?:( ...
- 2019牛客暑期多校训练营（第三场） - J - LRU management - 模拟
https://ac.nowcoder.com/acm/contest/883/J 根据这个数据结构的特点,也就是计算机组成原理里面学过的cache的LRU管理算法,每次访问都会在cache中查询一页 ...
- asp.net webapi自定义输出结果类似Response.Write()
asp.net webapi自定义输出结果类似Response.Write() [HttpGet] public HttpResponseMessage HelloWorld() { string ...
- nodejs 更新代码自动刷新页面
安装第三方工具: nodemon npm install --global nodemon 安装完毕后使用: 之前使用: node xxx.js 改成 nodemon xxx.js 只要通过nodem ...