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Pickle or json?
...nteroperability requirements (e.g. you are just going to use the data with Python) and a binary format is fine, go with cPickle which gives you really fast Python object serialization.
If you want interoperability or you want a text format to store your data, go with JSON (or some other appropriate...
UTF-8: General? Bin? Unicode?
...icode_ci follows an old Unicode standard for comparisons. ij=ij, but ae != æ
utf8_unicode_520_ci follows an newer Unicode standard. ae = æ
See collation chart for details on what is equal to what in various utf8 collations.
utf8, as defined by MySQL is limited to the 1- to 3-byte utf8 codes. ...
Android 4.1: How to check notifications are disabled for the application?
...loper.android.com/reference/android/app/…
– Sune Kjærgård
Aug 1 '17 at 11:14
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动态追踪（Dynamic Tracing）技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...世界中许多基于它们的工具，其实最外面都有一个 Perl、Python 或者 Shell 脚本编写的包裹。为了便于使用一种干净的语言编写完整的调试工具，我曾经给 SystemTap 语言进行了扩展，实现了一个更高层的“宏语言”，叫做 stap++[4]。...
How can I add new keys to a dictionary?
Is it possible to add a key to a Python dictionary after it has been created?
16 Answers
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Understanding Python's “is” operator
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and is shows both are the same object, it returns True.
Remember that in Python, names are just labels referencing values; you can have multiple names point to the same object. is tells you if two names point to one and the same object. == tells you if two names refer to objects that have the same...
How do I do a case-insensitive string comparison?
How can I do case insensitive string comparison in Python?
9 Answers
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Can I force pip to reinstall the current version?
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--force-reinstall
doesn't appear to force reinstall using python2.7 with pip-1.5
I've had to use
--no-deps --ignore-installed
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Pass a parameter to a fixture function
I am using py.test to test some DLL code wrapped in a python class MyTester.
For validating purpose I need to log some test data during the tests and do more processing afterwards. As I have many test_... files I want to reuse the tester object creation (instance of MyTester) for most of my tests.
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How can I list the contents of a directory in Python?
...e I originally answered this question years ago, pathlib has been added to Python. My preferred way to list a directory now usually involves the iterdir method on Path objects:
from pathlib import Path
print(*Path("/home/username/www/").iterdir(), sep="\n")
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