在Python中,mysqldb我可以将游标声明为字典光标,如下所示:

cursor = db.cursor(MySQLdb.cursors.DictCursor) 

这将使我能够cursor按名称引用循环中的列,如下所示:

for row in cursor:   # Using the cursor as iterator 
    city = row["city"]
    state = row["state"]

是否可以使用此MySQL连接器创建字典光标？ http://dev.mysql.com/doc/connector-python/en/connector-python-example-cursor-select.html

他们的例子只返回一个元组.

我想MySQL的创造者最终会为我们做这件事吗？

我有python 3模块安装的一些问题.我正在尝试使用pip安装mysql:

python -m pip install mysql

对于python 3.4.4,这是我得到的错误:

error: command 'C:\\Program Files (x86\\Microsoft Visual Studio 10.0\\VC\\BIN\\cl.exe' failed with exit status 2

这是截图:错误消息的屏幕截图

我之前遇到过模块安装的其他问题,我通过安装Visual Studio C++ 2010解决了这些问题

顺便说一句,其他模块的安装工作正常.

我的规格:Windows 10 x64

Python 3.4.4 x86

当我在虚拟环境中时,我尝试运行:

pip install MySQL-python

这不起作用,所以我尝试下载包并通过运行安装它:

python setup.py install

这将返回以下错误:

% python setup.py install                                                                                                                             ~VIRTUAL_ENV/build/MySQL-python
running install
install_dir /home/damon/Workspace/django-projects/acm-cie/env/lib/python2.6/site-packages/
running bdist_egg
running egg_info
writing MySQL_python.egg-info/PKG-INFO
writing top-level names to MySQL_python.egg-info/top_level.txt
writing dependency_links to MySQL_python.egg-info/dependency_links.txt
reading manifest file 'MySQL_python.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching 'MANIFEST'
warning: no files found matching 'ChangeLog'
warning: no files found matching 'GPL'
writing manifest file 'MySQL_python.egg-info/SOURCES.txt'
installing library code to build/bdist.linux-x86_64/egg
running install_lib
running build_py
copying MySQLdb/release.py -> build/lib.linux-x86_64-2.6/MySQLdb
running build_ext
building '_mysql' …

ERROR 2006(HY000)第1行:MySQL服务器已经消失

我面临同样的问题.我正在尝试将mysqldump文件恢复到我的机器.该文件的大小为2.7 MB.我得到"ERROR 2006(HY000)在第1行:MySQL服务器已经消失"错误.我增加了max_allowed_pa​​cket和wait_timeout的大小.但没有任何效果.

以下是我的文件(my-medium.ini)的内容,请告诉我我错在哪里.我的安装有各种ini文件,我修改过,my-large,my-medium,my-small,my-huge,my-innodb-heavy-4G.提前致谢!!

# Example MySQL config file for medium systems.
#
# This is for a system with little memory (32M - 64M) where MySQL plays
# an important part, or systems up to 128M where MySQL is used together with
# other programs (such as a web server)
#
# You can copy this file to
# /etc/my.cnf to set global options,
# mysql-data-dir/my.cnf to set server-specific options (in this
# installation this directory is …

用Homebrew安装MySQL和Python

我在OS X 10.10.5 Yosemite上用Homebrew安装了MySQL和Python.我的Python 2.7 python -> ../Cellar/python/2.7.9/bin/python带有一个符号链接/usr/local/bin/python.

在/usr/local/bin有一个符号链接:
mysql -> ../Cellar/mysql/5.7.9/bin/mysql

错误

在Python shell中:

>>> import MySQLdb
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/site-packages/MySQLdb/__init__.py", line 19, in <module>
    import _mysql
ImportError: dlopen(/usr/local/lib/python2.7/site-packages/_mysql.so, 2): Library not loaded: /usr/local/lib/libmysqlclient.18.dylib
  Referenced from: /usr/local/lib/python2.7/site-packages/_mysql.so
  Reason: image not found

所以我尝试过:
$ sudo unlink /usr/local/lib/libmysqlclient.18.dylib

其次是:
DYLD_LIBRARY_PATH=/usr/local/mysql/lib/:$DYLD_LIBRARY_PATH

然后(对理性的绝望):
$ export DYLD_LIBRARY_PATH=/usr/local/Cellar/mysql/5.7.9/lib

但在这两种情况下import MySQLdb仍然试图导入libmysqlclient.18.dylib.

然后我尝试了:
$ pip install -U MySQL-python …

尝试在Python 3.6.0上使用pip3安装mysqlclient

$ pip3 install mysqlclient
Collecting mysqlclient
  Using cached mysqlclient-1.3.10.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/private/var/folders/3k/08g3yx_12kg99kyfs989md600000gn/T/pip-build-1qv_89jc/mysqlclient/setup.py", line 17, in <module>
        metadata, options = get_config()
      File "/private/var/folders/3k/08g3yx_12kg99kyfs989md600000gn/T/pip-build-1qv_89jc/mysqlclient/setup_posix.py", line 54, in get_config
        libraries = [dequote(i[2:]) for i in libs if i.startswith('-l')]
      File "/private/var/folders/3k/08g3yx_12kg99kyfs989md600000gn/T/pip-build-1qv_89jc/mysqlclient/setup_posix.py", line 54, in <listcomp>
        libraries = [dequote(i[2:]) for i in libs if i.startswith('-l')]
      File "/private/var/folders/3k/08g3yx_12kg99kyfs989md600000gn/T/pip-build-1qv_89jc/mysqlclient/setup_posix.py", line 12, in dequote
        if s[0] in "\"'" and …

我安装MySQLdb之后

sudo apt-get install python-mysqldb

我可以在使用Python 2.6时导入和使用它,但不能使用2.7.(ImportError:没有名为MySQLdb的模块)

我认为apt-get在版本2.6中安装了MySQLdb,但我不知道如何使用python 2.7.请帮我.非常感谢!

我收到很多同样的警告 -

Warning: Truncated incorrect DOUBLE value: '512121500B'

- 但无法弄清楚原因.

MySQL表dr_snapshot看起来像这样:

PremiseID char(10) Primary Key
cycle SMALLINT(6)
last_read DATETIME
reading INTEGER
DeviceID INTEGER

我想通过PremiseID删除很多行.这是一个特别的:'512121500B'.

这是我的功能,由PremiseID删除:

def delDrSnapRow(premiseID, db):
    sql_cmd = " ".join([
        "delete ",
        "from dr_snapshot ",
        "where PremiseID = " + str(premiseID) + " ; "])

    del_cur = db.cursor()
    rc = del_cur.execute(sql_cmd)
    del_cur.close()

    return rc

PremiseID是一个字符串,而不是double.我在这里错过了什么？

非常感谢.

编辑

修改我的删除程序后使用try:..除了,我没有看到警告.我相信我没有看到警告,因为我没有看到警告显示 - print(e)- 在除了部分.

我得到的结论是尝试:除了以某种方式删除了错误.

def delDrSnapRow(premiseID, db):
    sql_cmd = " ".join([
        "delete ",
        "from dr_snapshot ",
        "where PremiseID = …

我是Python的新手,并尝试设置一个Django项目来使用MySql.我已阅读了有关该主题的文档以及其他一些StackOverflow帖子,但我仍然无法使其工作.

当我尝试在Django中运行迁移时,我收到以下错误:

Error loading MySQLdb module: No module named 'MySQLdb'

我已经安装了推荐的MySql Python Connector(2.0.1),选择了Ubuntu(因为我在Mint Linux上).它安装正确.我仍然得到错误.我不需要将这个库添加到项目或其他任何东西,对吗？看起来python应该只是意识到这一点并成功运行.我能做什么？谢谢.

编辑:我忘了提到:我正在运行Python 3.4 - 许多典型的解决方案仍然使用2.7,所以它们不起作用,所有3.0的解决方案我都试过没有成功.

我在OSX El Capitan上,使用Python 2.7(Anaconda).启动命令会pip install MySQL-python产生:

Collecting MySQL-python
  Using cached MySQL-python-1.2.5.zip
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/private/var/folders/d2/gd004m2s35z5dlyz9mfn6sc40000gn/T/pip-build-FYvb_T/MySQL-python/setup.py", line 17, in <module>
        metadata, options = get_config()
      File "setup_posix.py", line 53, in get_config
        libraries = [ dequote(i[2:]) for i in libs if i.startswith(compiler_flag("l")) ]
      File "setup_posix.py", line 8, in dequote
        if s[0] in "\"'" and s[0] == s[-1]:
    IndexError: string index out of range

这些都不起作用(以相同的错误退出).

• pip …