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DatabaseError: current transaction is aborted, commands ignored until end of transaction block?
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the problem is when I was using python-psycopg, no such errors raised. does psycopg2 implemented a different mechanism talking to postgres?
– jack
Jun 5 '10 at 6:28
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How to overcome TypeError: unhashable type: 'list'
...111', '112'], 'AAC': ['123'], 'AAB': ['111']}
Note that if you are using Python 3.x, you'll have to make a minor adjustment to get it work properly. If you open the file with rb, you'll need to use line = line.split(b'x') (which makes sure you are splitting the byte with the proper type of string)...
Typical AngularJS workflow and project structure (with Python Flask)
I am pretty new to this whole MV* client-side framework frenzy. It doesn't have to be AngularJS, but I picked it because it feels more natural to me than either Knockout, Ember or Backbone. Anyway what is the workflow like? Do people start with developing a client-side application in AngularJS and t...
Checking if a blob exists in Azure Storage
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Is there .. a ... python version?
– anpatel
Apr 23 '14 at 20:38
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How to convert comma-delimited string to list in Python?
Given a string that is a sequence of several values separated by a commma:
7 Answers
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argparse store false if unspecified
...t present.
The source for this behavior is succinct and clear: http://hg.python.org/cpython/file/2.7/Lib/argparse.py#l861
The argparse docs aren't clear on the subject, so I'll update them now: http://hg.python.org/cpython/rev/49677cc6d83a
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Is there an equivalent of 'which' on the Windows command line?
...) do @echo. %~$PATH:i
C:\WINDOWS\system32\cmd.exe
c:\> for %i in (python.exe) do @echo. %~$PATH:i
C:\Python25\python.exe
You don't need any extra tools and it's not limited to PATH since you can substitute any environment variable (in the path format, of course) that you wish to use....
How to set the maximum memory usage for JVM?
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Is ulimit a Linux command? I did a quick Google search and didn't see any relationship between ulimit and the JVM. Y
– Sam
May 26 '15 at 4:09
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Red black tree over avl tree
...va.util.TreeSet
C++ STL (in most implementations): map, multimap, multiset
Linux kernel: completely fair scheduler, linux/rbtree.h
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Why do you have to link the math library in C?
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This has nothing to do with Linux, since it was common long before Linux. I suspect it has something to do with trying to minimize executable size, since there's a lot of programs that don't need math functions.
– David Thornley
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