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Python list sort in descending order
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What would a “frozen dict” be?
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Python doesn't have a builtin frozendict type. It turns out this wouldn't be useful too often (though it would still probably be useful more often than frozenset is).
The most common reason to want such a type is when memoiz...
What generates the “text file busy” message in Unix?
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@ArjunShankar here is a C reproduction on a modern Linux with "direct" system calls: stackoverflow.com/questions/16764946/… GCC can only overwrite running executables nowadays because if first does an unlink by default.
– Ciro Santilli 郝海东冠状...
Detect & Record Audio in Python
...to capture audio clips as WAV files that I can then pass to another bit of python for processing. The problem is that I need to determine when there is audio present and then record it, stop when it goes silent and then pass that file to the processing module.
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How is Pythons glob.glob ordered?
I have written the following Python code:
10 Answers
10
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Adding git branch on the Bash command prompt
...\$ '
Everything is a different color, including the branch.
In in Linux Mint 17.3 Cinnamon 64-bit:
PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[01;34m\] \w\[\033[00m\]$(__git_ps1) \$ '
share...
Can I use __init__.py to define global variables?
... This should have been the accepted answer. If you are working with Python 2.5 or higher you can also use an explicit relative import as well as described here: from . import MY_CONSTANT
– ThatAintWorking
Feb 12 '14 at 17:17
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C/C++中的段错误（Segmentation fault） - C/C++ - 清泛网 - 专注C/C++及内核技术
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另外，这里有个基本上对照的中文解释，来自http://www.linux999.org/html_sql/3/132559.htm
所谓的段错误 就是指访问的内存超出了系统所给这个程序的内存空间，通常这个值是由gdtr来保存的，他是一个48位的寄存器，其中的32...
Logical operators for boolean indexing in Pandas
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When you say
(a['x']==1) and (a['y']==10)
You are implicitly asking Python to convert (a['x']==1) and (a['y']==10) to boolean values.
NumPy arrays (of length greater than 1) and Pandas objects such as Series do not have a boolean value -- in other words, they raise
ValueError: The truth v...
Checking if a string can be converted to float in Python
I've got some Python code that runs through a list of strings and converts them to integers or floating point numbers if possible. Doing this for integers is pretty easy
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