Recent progress March 2014: Good news! Python 3.4 ships with Pip. Pip has long been Python’s de-facto standard package manager. You can install a package like this: pip install httpie Wahey! This is the best feature of any Python release. It makes the community’s wealth of libraries accessible to everyone. Newbies are no longer excluded … Read more
Is there a way to obtain a list of Python modules available (i.e. installed) on a machine? This works for me: help(‘modules’) Where is the module code actually stored on my machine? Usually in /lib/site-packages in your Python folder. (At least, on Windows.) You can use sys.path to find out what directories are searched for … Read more
// person.js ‘use strict’; module.exports = class Person { constructor(firstName, lastName) { this.firstName = firstName; this.lastName = lastName; } display() { console.log(this.firstName + ” ” + this.lastName); } } // index.js ‘use strict’; var Person = require(‘./person.js’); var someone = new Person(“First name”, “Last name”); someone.display();
You are using from bar import a. a becomes a symbol in the global scope of the importing module (or whatever scope the import statement occurs in). When you assign a new value to a, you are just changing which value a points too, not the actual value. Try to import bar.py directly with import … Read more
As of today (April 30, 2012) you can use Underscore as usual on your Node.js code. Previous comments are right pointing that REPL interface (Node’s command line mode) uses the “_” to hold the last result BUT on you are free to use it on your code files and it will work without a problem … Read more
Change your import in test.py to: from .hello import hello1
I can’t really recommend this solution work-around but it does function. Rather than exporting an object, you use named exports each member. In another file, import the first module’s named exports into an object and export that object as default. Also export all the named exports from the first module using export * from ‘./file1’; … Read more
The primary reason is that export matches the plans for ECMAScript. You could argue that “they should have used “export” instead of “public”, but asides from “export/private/protected” being a poorly matched set of access modifiers, I believe there is a subtle difference between the two that explains this. In TypeScript, marking a class member as … Read more
import sys thismodule = sys.modules[__name__] setattr(thismodule, name, value) or, without using setattr (which breaks the letter of the question but satisfies the same practical purposes;-): globals()[name] = value Note: at module scope, the latter is equivalent to: vars()[name] = value which is a bit more concise, but doesn’t work from within a function (vars() gives … Read more
Macros within the same crate New method (since Rust 1.32, 2019-01-17) foo::bar!(); // works mod foo { macro_rules! bar { () => () } pub(crate) use bar; // <– the trick } foo::bar!(); // works With the pub use, the macro can be used and imported like any other item. And unlike the older method, … Read more