TypeError: Missing 1 required positional argument: ‘self’
You need to instantiate a class instance here. Use Small example –
Amazon Linux: apt-get: command not found
If you’re using Amazon Linux it’s CentOS-based, which is RedHat-based. RH-based installs use yum not apt-get. Something like yum search httpd should show you the available Apache packages – you likely want yum install httpd24. Note: Amazon Linux 2 has diverged from CentOS since the writing of this answer, but still uses yum.
How to print to stderr in Python?
I found this to be the only one short, flexible, portable and readable: The function eprint can be used in the same way as the standard print function:
Git master branch has no upstream branch
Instead of creating a new repository on Github, cloning that, or reinitializing your local repository, the following command would have been sufficient: origin stands for the remote name (default is origin),master is the branch you want to push, in your case it’s master, otherwise you would have to change that in the command.-u means, that your local branch … Read more
The superclass “javax.servlet.http.HttpServlet” was not found on the Java Build Path
Add a runtime first and select project properties. Then check the server name from the ‘Runtimes’ tab as shown in the image.
What’s the purpose of the LEA instruction?
As others have pointed out, LEA (load effective address) is often used as a “trick” to do certain computations, but that’s not its primary purpose. The x86 instruction set was designed to support high-level languages like Pascal and C, where arrays—especially arrays of ints or small structs—are common. Consider, for example, a struct representing (x, … Read more
How do I use the yfinance API in Python to get today’s DJI open?
If you are using the yfinance package, then you can get the last day’s open this way.
No module named MySQLdb
You need to use one of the following commands. Which one depends on what OS and software you have and use. easy_install mysql-python (mix os) pip install mysql-python (mix os/ python 2) pip install mysqlclient (mix os/ python 3) apt-get install python-mysqldb (Linux Ubuntu, …) cd /usr/ports/databases/py-MySQLdb && make install clean (FreeBSD) yum install MySQL-python (Linux Fedora, CentOS …) For Windows, … Read more
Relative imports for the billionth time
Script vs. Module Here’s an explanation. The short version is that there is a big difference between directly running a Python file, and importing that file from somewhere else. Just knowing what directory a file is in does not determine what package Python thinks it is in. That depends, additionally, on how you load the file into … Read more