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super() raises “TypeError: must be type, not classobj” for new-style class
...e distinct. Here, OldStyle().__class__ is OldStyle, which does not inherit from object, while type(OldStyle()) is the instance type, which does inherit from object. Basically, an old-style class just creates objects of type instance (whereas a new-style class creates objects whose type is the class...
pip issue installing almost any library
...ping
Could not find a version that satisfies the requirement pytest-cov (from versions: )
No matching distribution found for pytest-cov
Update April 2018:
To anyone getting the TLSV1_ALERT_PROTOCOL_VERSION error: it has nothing to do with trusted-host/verification issue of the OP or this answer....
Getting scroll bar width using JavaScript [duplicate]
...(outer.offsetWidth - inner.offsetWidth);
// Removing temporary elements from the DOM
outer.parentNode.removeChild(outer);
return scrollbarWidth;
}
Basic steps here are:
Create hidden div (outer) and get it's offset width
Force scroll bars to appear in div (outer) using CSS overflow prop...
git pull error :error: remote ref is at but expected
...
I had to remove my branch from my command line at:
.git\refs\remotes\{my remote}\{**my branch**}
and then manually doing:
git pull [remote_name] [branch_name]
I was able to pull the changes.
Note: I was using SourceTree and was unable to do th...
Validating with an XML schema in Python
...xslt-devel
The simplest validator
Let's create simplest validator.py
from lxml import etree
def validate(xml_path: str, xsd_path: str) -> bool:
xmlschema_doc = etree.parse(xsd_path)
xmlschema = etree.XMLSchema(xmlschema_doc)
xml_doc = etree.parse(xml_path)
result = xmlsch...
How to restart Activity in Android
...cause of "aesthetic" reason is, well, not great. I would discourage anyone from doing it here at Stackoverflow...
– ChuongPham
Aug 8 '13 at 14:27
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Can git undo a checkout of unstaged files
...t enter by accident after getting to folder and lost all my work. / is 1cm from enter on my keyboard and I switch between machines with different keyboard layouts often so there's often 10-15 minutes of my fingers getting used to new positions. Hard to believe in 2018 that git trashs files even thou...
How line ending conversions work with git core.autocrlf between different operating systems
...ne of CRLF_BINARY,
CRLF_AUTO_INPUT or CRLF_AUTO_CRLF is selected
- CRLF_BINARY : No processing of line endings.
- CRLF_TEXT : attribute "text" is set, line endings are processed.
- CRLF_TEXT_INPUT: attribute "input" or "eol=lf" is set. This implies text.
- CRLF_TEXT_CRLF :...
Creating hard and soft links using PowerShell
...
You can call the mklink provided by cmd, from PowerShell to make symbolic links:
cmd /c mklink c:\path\to\symlink c:\target\file
You must pass /d to mklink if the target is a directory.
cmd /c mklink /d c:\path\to\symlink c:\target\directory
For hard links, I ...
How to install the current version of Go in Ubuntu Precise
...hich outputs in my case (Ubuntu precise)
go version go1.1.1 linux/amd64
From there just export the settings you're gonna need to bash_rc or equivalent:
export GOROOT=/usr/lib/go
export GOBIN=/usr/bin/go
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