How to import module when module name has a ‘-‘ dash or hyphen in it?
Starting from Python 3.1, you can use importlib : import importlib foobar = importlib.import_module(“foo-bar”) ( https://docs.python.org/3/library/importlib.html )
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I can’t install python-ldap
The python-ldap is based on OpenLDAP, so you need to have the development files (headers) in order to compile the Python module. If you’re on Ubuntu, the package is called libldap2-dev. Debian/Ubuntu: sudo apt-get install libsasl2-dev python-dev libldap2-dev libssl-dev RedHat/CentOS: sudo yum install python-devel openldap-devel
`from … import` vs `import .` [duplicate]
It depends on how you want to access the import when you refer to it. from urllib import request # access request directly. mine = request() import urllib.request # used as urllib.request mine = urllib.request() You can also alias things yourself when you import for simplicity or to avoid masking built ins: from os import … Read more
Declare multiple module.exports in Node.js
You can do something like: module.exports = { method: function() {}, otherMethod: function() {}, }; Or just: exports.method = function() {}; exports.otherMethod = function() {}; Then in the calling script: const myModule = require(‘./myModule.js’); const method = myModule.method; const otherMethod = myModule.otherMethod; // OR: const {method, otherMethod} = require(‘./myModule.js’);
Python 3: ImportError “No Module named Setuptools”
Your setup.py file needs setuptools. Some Python packages used to use distutils for distribution, but most now use setuptools, a more complete package. Here is a question about the differences between them. To install setuptools on Debian: sudo apt-get install python3-setuptools For an older version of Python (Python 2.x): sudo apt-get install python-setuptools
Difference between a class and a module
╔═══════════════╦═══════════════════════════╦═════════════════════════════════╗ ║ ║ class ║ module ║ ╠═══════════════╬═══════════════════════════╬═════════════════════════════════╣ ║ instantiation ║ can be instantiated ║ can *not* be instantiated ║ ╟───────────────╫───────────────────────────╫─────────────────────────────────╢ ║ usage ║ object creation ║ mixin facility. provide ║ ║ ║ ║ a namespace. ║ ╟───────────────╫───────────────────────────╫─────────────────────────────────╢ ║ superclass ║ module ║ object ║ ╟───────────────╫───────────────────────────╫─────────────────────────────────╢ ║ methods ║ class methods and ║ module methods … Read more
What is the difference between include and extend in Ruby?
extend – adds the specified module’s methods and constants to the target’s metaclass (i.e. the singleton class) e.g. if you call Klazz.extend(Mod), now Klazz has Mod’s methods (as class methods) if you call obj.extend(Mod), now obj has Mod’s methods (as instance methods), but no other instance of of obj.class has those methods added. extend is … Read more
module.exports vs. export default in Node.js and ES6
The issue is with how ES6 modules are emulated in CommonJS how you import the module ES6 to CommonJS At the time of writing this, no environment supports ES6 modules natively. When using them in Node.js you need to use something like Babel to convert the modules to CommonJS. But how exactly does that happen? … Read more
How to list all functions in a module?
You can use dir(module) to see all available methods/attributes. Also check out PyDocs.
How do I find the location of Python module sources?
For a pure python module you can find the source by looking at themodule.__file__. The datetime module, however, is written in C, and therefore datetime.__file__ points to a .so file (there is no datetime.__file__ on Windows), and therefore, you can’t see the source. If you download a python source tarball and extract it, the modules’ … Read more