Enums have been added to Python 3.4 as described in PEP 435. It has also been backported to 3.3, 3.2, 3.1, 2.7, 2.6, 2.5, and 2.4 on pypi. For more advanced Enum techniques try the aenum library (2.7, 3.3+, same author as enum34. Code is not perfectly compatible between py2 and py3, e.g. you’ll need … Read more
777 is a permission in Unix based system with full read/write/execute permission to owner, group and everyone.. in general we give this permission to assets which are not much needed to be hidden from public on a web server, for example images.. You said I am using windows 7. if that means that your web … Read more
If you are going for a console command it would be: chmod -R 777 /www/store. The -R (or –recursive) options make it recursive. Or if you want to make all the files in the current directory have all permissions type: chmod -R 777 ./ If you need more info about chmod command see: File permission
The assert statement exists in almost every programming language. It helps detect problems early in your program, where the cause is clear, rather than later when some other operation fails. When you do… … you’re telling the program to test that condition, and immediately trigger an error if the condition is false. In Python, it’s … Read more
For custom-delimited date formats, you have to pull out the date (or time) components from a DateTimeFormat object (which is part of the ECMAScript Internationalization API), and then manually create a string with the delimiters you want. To do this, you can use DateTimeFormat#formatToParts. You could destructure the array, but that is not ideal, as … Read more
A race condition occurs when two or more threads can access shared data and they try to change it at the same time. Because the thread scheduling algorithm can swap between threads at any time, you don’t know the order in which the threads will attempt to access the shared data. Therefore, the result of … Read more
I don’t know how future and/or exotic browsers will interpret non-official hacks like //, so I’d rather stick with the appropriate notation:
lexicographical order is alphabetical order. The other type is numerical ordering. Consider the following values, Those values are in lexicographical order. 10 comes after 2 in numerical order, but 10 comes before 2 in “alphabetical” order.
Your formula is correct for all angles. But the names that you’ve given the angles are probably not quite right. What you’ve called “horizontal angle” is the inclination angle – the angle between the vector and the z-axis. So if “horizontal angle” is 0, then the point lies on the z-axis, which means that it … Read more
This question’s answers are a community effort. Edit existing answers to improve this post. It is not currently accepting new answers or interactions. How do I read every line of a file in Python and store each line as an element in a list? I want to read the file line by line and append … Read more