mysql-python

cursor.fetchall() vs list(cursor) in Python

由 纵饮孤独 提交于 2019-11-26 10:35:11
问题 Both methods return a list of the returned items of the query, did I miss something here? Or they have identical usages indeed? Any differences performance-wise? 回答1: If you are using the default cursor, a MySQLdb.cursors.Cursor , the entire result set will be stored on the client side (i.e. in a Python list) by the time the cursor.execute() is completed. Therefore, even if you use for row in cursor: you will not be getting any reduction in memory footprint. The entire result set has already

Installing mysqlclient in Python 3.6 in windows

由 痞子三分冷 提交于 2019-11-26 08:24:45
问题 I want to install MySqlclient on my windows system. I am Currently using Python 3.6. After going through the various post over Stackoverflow, I could Not find the correct way. This is what I have done so far: 1) Installation by using pip pip install mysqlclient . Error: Microsoft Visual C++ 14.0 is required. Get it with \"Microsoft Visual C++ Build Tools\" http://landinghub.visualstudio.com/visual-cpp-build-tools I already have Microsoft Visual C++ installed on my laptop. Some are saying you

Python MYSQL update statement

由 徘徊边缘 提交于 2019-11-26 08:04:41
问题 I\'m trying to get this Python MYSQL update statement correct(With Variables): cursor.execute (\"UPDATE tblTableName SET Year=%s\" % Year \", Month=%s\" % Month \", Day=%s\" % Day \", Hour=%s\" % Hour \", Minute=%s\" Minute \"WHERE Server=%s \" % ServerID) Any ideas where I\'m going wrong? 回答1: It should be: cursor.execute (""" UPDATE tblTableName SET Year=%s, Month=%s, Day=%s, Hour=%s, Minute=%s WHERE Server=%s """, (Year, Month, Day, Hour, Minute, ServerID)) You can also do it with basic

Error installing mysql-python: library not found for -lssl

由 旧巷老猫 提交于 2019-11-26 07:38:52
问题 I\'m having trouble installing mysql-python. Created a new virtualenv and when installing mysql-python... here\'s the error message: (env)$ pip install mysql-python Collecting mysql-python ... clang -bundle -undefined dynamic_lookup -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk build/temp.macosx-10.12-x86_64-2.7/_mysql.o -L/usr /local/Cellar/mysql/5.7.16/lib -lmysqlclient -lssl -lcrypto -o build/lib.macosx-10.12-x86_64-2.7/_mysql

Python 3.4.0 with MySQL database

由 喜欢而已 提交于 2019-11-26 07:28:58
问题 I have installed Python version 3.4.0 and I would like to do a project with MySQL database. I downloaded and tried installing MySQLdb , but it wasn\'t successful for this version of Python. Any suggestions how could I fix this problem and install it properly? 回答1: MySQLdb does not support Python 3 but it is not the only MySQL driver for Python. mysqlclient is essentially just a fork of MySQLdb with Python 3 support merged in (and a few other improvements). PyMySQL is a pure python MySQL

When to close cursors using MySQLdb

由 主宰稳场 提交于 2019-11-26 06:19:00
问题 I\'m building a WSGI web app and I have a MySQL database. I\'m using MySQLdb, which provides cursors for executing statements and getting results. What is the standard practice for getting and closing cursors? In particular, how long should my cursors last? Should I get a new cursor for each transaction? I believe you need to close the cursor before committing the connection. Is there any significant advantage to finding sets of transactions that don\'t require intermediate commits so that

mysql-python install error: Cannot open include file 'config-win.h'

由 纵饮孤独 提交于 2019-11-26 05:58:21
问题 I am trying to run pip install mysql-python connector but it keeps giving me an error \" Cannot open include file: \'config-win.h\' \". The installation works fine on my Mac and another Windows machine, but not this one. I have downloaded Visual Studio C++ and tried installing as both 32 bit and 64. _mysql.c(42) : fatal error C1083: Cannot open include file: \'config-win.h\': No s uch file or directory error: command \'C:\\\\Program Files (x86)\\\\Microsoft Visual Studio 9.0\\\\VC\\\\BIN\\\\c

Python mysqldb: Library not loaded: libmysqlclient.18.dylib

由 ☆樱花仙子☆ 提交于 2019-11-26 05:36:28
I just compiled and installed mysqldb for python 2.7 on my mac os 10.6. I created a simple test file that imports import MySQLdb as mysql Firstly, this command is red underlined and the info tells me "Unresolved import". Then I tried to run the following simple python code import MySQLdb as mysql def main(): conn = mysql.connect( charset="utf8", use_unicode=True, host="localhost",user="root", passwd="",db="" ) if __name__ == '__main__'(): main() When executing it I get the following error message Traceback (most recent call last): File "/path/to/project/Python/src/cvdv/TestMySQLdb.py", line 4,

Install mysql-python (Windows)

由 丶灬走出姿态 提交于 2019-11-26 04:46:00
问题 I\'ve spent hours trying to make Django work on my computer. The problem is that I can\'t install the mysql-python package. I\'m running Windows 7 64bit. This is what I\'ve tried: I have downloaded easy_install I have downloaded Cygwin64 to be able to run Linux commands (Win cmd was driving me crazy) I have typed in: easy_install mysql-python (gave me an error message saying it can\'t find vcvarsall.bat) I have downloaded Visual Studio 2010. However, I uninstalled it since I found out that I

Python mysqldb: Library not loaded: libmysqlclient.18.dylib

由 ╄→尐↘猪︶ㄣ 提交于 2019-11-26 01:50:54
问题 I just compiled and installed mysqldb for python 2.7 on my mac os 10.6. I created a simple test file that imports import MySQLdb as mysql Firstly, this command is red underlined and the info tells me \"Unresolved import\". Then I tried to run the following simple python code import MySQLdb as mysql def main(): conn = mysql.connect( charset=\"utf8\", use_unicode=True, host=\"localhost\",user=\"root\", passwd=\"\",db=\"\" ) if __name__ == \'__main__\'(): main() When executing it I get the
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