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What is __pycache__?

...'s files, respectively. As a programmer, you can largely just ignore it... All it does is make your program start a little faster. When your scripts change, they will be recompiled, and if you delete the files or the whole folder and run your program again, they will reappear (unless you specificall...
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Which commit has this blob?

... scripts take the blob’s SHA1 as the first argument, and after it, optionally, any arguments that git log will understand. E.g. --all to search in all branches instead of just the current one, or -g to search in the reflog, or whatever else you fancy. Here it is as a shell script – short and sw...
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Installing python module within code

I need to install a package from PyPi straight within my script. Maybe there's some module or distutils ( distribute , pip etc.) feature which allows me to just execute something like pypi.install('requests') and requests will be installed into my virtualenv. ...
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How to prevent gcc optimizing some statements in C?

...eeds. This has the advantage of just applying to a single function and not all functions defined in the same file. Usage example: void __attribute__((optimize("O0"))) foo(unsigned char data) { // unmodifiable compiler code } ...
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Python extract pattern matches

...h a standard python REPL, the last result is stored in a special variable called _. It isn't valid outside anywhere else. – UltraInstinct Mar 13 '19 at 2:25 ...
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Disable migrations when running unit tests in Django 1.7

... syncdb did in 1.6. I defined a new settings module just for unit tests called "settings_test.py", which imports * from the main settings module and adds this line: MIGRATION_MODULES = {"myapp": "myapp.migrations_not_used_in_tests"} Then I run tests like this: DJANGO_SETTINGS_MODU...
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What does `:_*` (colon underscore star) do in Scala?

...tes: MetaData, scope: NamespaceBinding, child: Node*) which is called as new Elem(prefix, label, attributes, scope, child1, child2, ... childN) but here there is only a sequence, not child1, child2, etc. so this allows the result sequence to be used as the input to the constru...
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What are best practices for validating email addresses on iOS 2.0

... ; "]", or "\" Yes, that means +, ', etc are all legit. share | improve this answer | follow | ...
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jumpserver-华为云免费堡垒机解决方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...d/bak/ wget http://mirrors.163.com/.help/CentOS6-Base-163.repo yum clean all yum makecache 如果是REHL需要修改 1.删除redhat原有的yum rpm -aq|grep yum|xargs rpm -e --nodeps 2.下载yum安装文件 wget http://mirrors.163.com/centos/6.7/os/x86_64/Packages/yum-3.2.29-69.el6.ce...
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How do I get indices of N maximum values in a NumPy array?

...t been able to find one. If this solution turns out to be too slow (especially for small n), it may be worth looking at coding something up in Cython. share | improve this answer | ...