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mysql_config not found when installing mysqldb python interface
...,'beta',4) -D__version__=1.2.4b4 -I/usr/include/mysql -I/usr/include/python2.7 -c _mysql.c -o build/temp.linux-x86_64-2.7/_mysql.o -DBIG_JOINS=1 -fno-strict-aliasing -g
In file included from _mysql.c:44:0:
/usr/include/mysql/my_config.h:422:0: aviso: se redefinió "HAVE_WCSCOLL" [act...
Detecting a mobile browser
...f(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|window...
What does “SyntaxError: Missing parentheses in call to 'print'” mean in Python?
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Add the line from future import print_function in your 2.7 file to add new python 3 print() lines to your code. Hence the code becomes compatible to 2.7+ and 3.0+
– MasterControlProgram
Oct 24 '16 at 11:20
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Format floats with standard json module
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This solution does not work in Python 2.7 using Python's C version of the JSON encoder.
– Nelson
Apr 6 '11 at 23:14
25
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What are some good resources for learning about Artificial Neural Networks? [closed]
...any notions that artificial neural networks have anything to do with the brain but for a passing similarity to networks of biological neurons. Learning biology won't help you effectively apply neural networks; learning linear algebra, calculus, and probability theory will. You should at the very lea...
How to delete items from a dictionary while iterating over it?
...ct[k]
My favorite approach is usually to just make a new dict:
# Python 2.7 and 3.x
mydict = { k:v for k,v in mydict.items() if k!=val }
# before Python 2.7
mydict = dict((k,v) for k,v in mydict.iteritems() if k!=val)
sh...
Print in one line dynamically
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Change print item to:
print item, in Python 2.7
print(item, end=" ") in Python 3
If you want to print the data dynamically use following syntax:
print(item, sep=' ', end='', flush=True) in Python 3
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How to launch an Activity from another Application in Android
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If you don't know the main activity, then the package name can be used to launch the application.
Intent launchIntent = getPackageManager().getLaunchIntentForPackage("com.package.address");
if (launchIntent != null) {
startActivity(launchInte...
分布式系统的事务处理 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...虑下面的这么几个情况：
1）容灾：数据不丢、结点的Failover
2）数据的一致性：事务处理
3）性能：吞吐量 、 响应时间
前面说过，要解决数据不丢，只能通过数据冗余的方法，就算是数据分区，每个区也需要进行数据冗余处...
Any gotchas using unicode_literals in Python 2.6?
...h should always work, for all combinations of unicode_literals and Python {2.7, 3.x} usage:
from __future__ import unicode_literals
bstr = b'\xa4'
assert eval(repr(bstr)) == bstr # fails in Python 2.7, holds in 3.1+
ustr = '\xa4'
assert eval(repr(ustr)) == ustr # holds in Python 2.7 and 3.1+
Th...