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How can I check whether a numpy array is empty or not?
... This is great for numpy, but is unfortunate that it is considered unpythonic for lists. Check out discussion for lists: stackoverflow.com/questions/53513/… It would be nice to use same pattern for numpy arrays and lists.
– eric
Jul 28 '19 at 16:41
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How do you run your own code alongside Tkinter's event loop?
...cl from different appartment" message on my computer (RedHat Enterprise 5, python 2.6.1). Bjorn might not have gotten this message, since, according to one place I checked, mishandling threading with Tkinter is unpredictable and platform-dependent.
The problem seems to be that app.start() counts a...
NAnt or MSBuild, which one to choose and when?
...Here's what I've been able to determine:
NAnt:
Cross-platform (supports Linux/Mono). It may be handy for installing a web site to multiple targets (that is, Linux Apache and Windows IIS), for example.
95% similar in syntax to Ant (easy for current Ant users or Java builders to pick up)
Integrati...
Class method decorator with self arguments?
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A more concise example might be as follows:
#/usr/bin/env python3
from functools import wraps
def wrapper(method):
@wraps(method)
def _impl(self, *method_args, **method_kwargs):
method_output = method(self, *method_args, **method_kwargs)
return method_output...
UTF-8, UTF-16, and UTF-32
...
UTF-32 isn't rarely used anymore... on osx and linux wchar_t defaults to 4 bytes. gcc has an option -fshort-wchar which reduces the size to 2 bytes, but breaks the binary compatibility with std libs.
– vine'th
Nov 14 '11 at 10:12
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NoSql Crash Course/Tutorial [closed]
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y_serial is written as a single Python module which reads like a working tutorial and includes many tips and references: http://yserial.sourceforge.net/
This takes the perspective of how to persist an arbitrary Python object (e.g. a dictionary data struct...
Difference between -pthread and -lpthread while compiling
...rietary implementations of Pthreads API that weren't POSIX-compliant, like LinuxThreads. POSIX standard merely says that if one wants POSIX-compliant behaviour, then one must link with -lpthread, and linking that is required to link a POSIX-compliant implementation of Pthreads API, should there be m...
How to serialize SqlAlchemy result to JSON?
...o serialize your object.
As explained in Convert sqlalchemy row object to python dict
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What is the difference between Amazon S3 and Amazon EC2 instance?
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An EC2 instance is like a remote computer running Windows or Linux and on which you can install whatever software you want, including a Web server running PHP code and a database server.
Amazon S3 is just a storage service, typically used to store large binary files. Amazon also has o...
How to pipe list of files returned by find command to cat to view all the files
...} +
Classic version
find . -print | xargs grep something
If you're on Linux or have the GNU find and xargs commands, then use -print0 with find and -0 with xargs to handle file names containing spaces and other odd-ball characters.
find . -print0 | xargs -0 grep something
Tweaking the result...