Questions tagged [module]
A logical subdivision of a larger, more complex system.
module
22,781
questions
3792
votes
14
answers
2.5m
views
1260
votes
34
answers
1.9m
views
How do I get a list of locally installed Python modules?
How do I get a list of Python modules installed on my computer?
- 138k
1123
votes
26
answers
1.2m
views
How to retrieve a module's path?
I want to detect whether module has changed. Now, using inotify is simple, you just need to know the directory you want to get notifications from.
How do I retrieve a module's path in python?
- 25.2k
1118
votes
22
answers
945k
views
How do I unload (reload) a Python module?
I have a long-running Python server and would like to be able to upgrade a service without restarting the server. What's the best way do do this?
if foo.py has changed:
unimport foo <-- How ...
- 302k
1116
votes
33
answers
1.5m
views
Importing modules from parent folder
I am running Python 2.5.
This is my folder tree:
ptdraft/
nib.py
simulations/
life/
life.py
(I also have __init__.py in each folder, omitted here for readability)
How do I import the ...
- 87k
899
votes
6
answers
197k
views
Relation between CommonJS, AMD and RequireJS?
I'm still very confused about CommonJS, AMD and RequireJS, even after reading a lot.
I know that CommonJS (formerly ServerJS) is a group for defining some JavaScript specifications (i.e. modules) when ...
- 48.3k
850
votes
10
answers
358k
views
What's the difference between a module and package in Python?
What's the difference between a module and package in Python?
See also: What's the difference between "package" and "module"? (for other languages)
- 9,283
614
votes
22
answers
872k
views
How do I find the location of Python module sources? [duplicate]
How do I learn where the source file for a given Python module is installed? Is the method different on Windows than on Linux?
I'm trying to look for the source of the datetime module in particular, ...
- 147k
594
votes
21
answers
1.1m
views
How to list all functions in a module?
I have a Python module installed on my system and I'd like to be able to see what functions/classes/methods are available in it.
I want to call the help function on each one. In Ruby I can do ...
- 7,754
526
votes
3
answers
551k
views
module.exports vs. export default in Node.js and ES6
What is the difference between Node's module.exports and ES6's export default? I'm trying to figure out why I get the "__ is not a constructor" error when I try to export default in Node.js 6.2.2.
...
- 6,499
522
votes
11
answers
285k
views
What is the difference between include and require in Ruby?
My question is similar to "What is the difference between include and extend in Ruby?".
What's the difference between require and include in Ruby? If I just want to use the methods from a module in ...
- 22.7k
486
votes
8
answers
117k
views
What is the difference between include and extend in Ruby?
Just getting my head around Ruby metaprogramming. The mixin/modules always manage to confuse me.
include: mixes in specified module methods as instance methods in the target class
extend: mixes in ...
- 136k
466
votes
9
answers
172k
views
Difference between a class and a module
I came from Java, and now I am working more with Ruby.
One language feature I am not familiar with is the module. I am wondering what exactly is a module and when do you use one, and why use a ...
- 13.4k
449
votes
21
answers
529k
views
Declare multiple module.exports in Node.js
What I'm trying to achieve is to create one module that contains multiple functions in it.
module.js:
module.exports = function(firstParam) { console.log("You did it"); },
module.exports = function(...
- 10.3k
447
votes
24
answers
1.0m
views
Python 3: ImportError "No Module named Setuptools"
I'm having troubles with installing packages in Python 3.
I have always installed packages with setup.py install. But now, when I try to install the ansicolors package I get:
importerror "No ...
- 4,473
381
votes
6
answers
211k
views
What is the purpose of the -m switch?
Could you explain to me what the difference is between calling
python -m mymod1 mymod2.py args
and
python mymod1.py mymod2.py args
It seems in both cases mymod1.py is called and sys.argv is
['...
- 22.7k
380
votes
6
answers
597k
views
`from ... import` vs `import .` [duplicate]
I'm wondering if there's any difference between the code fragment
from urllib import request
and the fragment
import urllib.request
or if they are interchangeable. If they are interchangeable, which ...
- 15.9k
361
votes
8
answers
234k
views
How to import module when module name has a '-' dash or hyphen in it?
I want to import foo-bar.py, this works:
foobar = __import__("foo-bar")
This does not:
from "foo-bar" import *
My question: Is there any way that I can use the above format i.e., ...
- 4,148
358
votes
17
answers
263k
views
How can I conditionally import an ES6 module?
I need to do something like:
if (condition) {
import something from 'something';
}
// ...
if (something) {
something.doStuff();
}
The above code does not compile; it throws SyntaxError: ... '...
- 25.9k
353
votes
27
answers
384k
views
I can't install python-ldap
When I run the following command:
sudo pip install python-ldap
I get this error:
In file included from Modules/LDAPObject.c:9:
Modules/errors.h:8: fatal error: lber.h: No such file or directory
How ...
- 4,081
339
votes
11
answers
366k
views
Defining private module functions in python
According to http://www.faqs.org/docs/diveintopython/fileinfo_private.html:
Like most languages, Python has the
concept of private elements:
Private
functions, which can't be called from
outside ...
- 24.7k
319
votes
2
answers
75k
views
What exactly is Hot Module Replacement in Webpack?
I've read a few pages about Hot Module Replacement in Webpack.
There's even a sample app that uses it.
I've read all of this and still don't get the idea.
What can I do with it?
Is it supposed to ...
- 267k
315
votes
11
answers
406k
views
How to import a Python class that is in a directory above?
I want to inherit from a class in a file that lies in a directory above the current one.
Is it possible to relatively import that file?
- 3,555
297
votes
5
answers
389k
views
How to create module-wide variables in Python? [duplicate]
Is there a way to set up a global variable inside of a module? When I tried to do it the most obvious way as appears below, the Python interpreter said the variable __DBNAME__ did not exist.
...
...
- 10.2k
294
votes
10
answers
228k
views
How do I use namespaces with TypeScript external modules?
I have some code:
baseTypes.ts
export namespace Living.Things {
export class Animal {
move() { /* ... */ }
}
export class Plant {
photosynthesize() { /* ... */ }
}
}
dog.ts
import ...
- 217k
291
votes
1
answer
98k
views
Node.js plans to support import/export ES6 (ECMAScript 2015) modules
I've been looking all over the Internet without a clear answer for this.
Currently Node.js uses only CommonJS syntax to load modules, and if you really want to use the standard ECMAScript 2015 modules ...
- 4,264
286
votes
7
answers
188k
views
What's the difference between an Angular component and module
I've been watching videos and reading articles but this specific article make me so confused, at the start of the article it says
The applications in Angular follow modular structure. The Angular ...
- 4,314
282
votes
12
answers
288k
views
Why is Python running my module when I import it, and how do I stop it?
I have a Python program I'm building that can be run in either of 2 ways: the first is to call python main.py which prompts the user for input in a friendly manner and then runs the user input through ...
- 5,793
276
votes
12
answers
142k
views
Best way to load module/class from lib folder in Rails 3?
Since the latest Rails 3 release is not auto-loading modules and classes from lib anymore,
what would be the best way to load them?
From github:
A few changes were done in this commit:
Do not ...
- 16.2k
268
votes
32
answers
603k
views
Typescript ReferenceError: exports is not defined
Trying to implement a module following the official handbook, I get this error message:
Uncaught ReferenceError: exports is not defined
at app.js:2
But nowhere in my code do I ever use the ...
user6600549
266
votes
21
answers
370k
views
Nodejs cannot find installed module on Windows
I am learning nodejs at the moment on Windows. Several modules are installed globally with npm.cmd, and nodejs failed to find the installed modules. Take jade for example,
npm install jade -g
Jade ...
- 3,223
264
votes
7
answers
298k
views
How to point Go module dependency in go.mod to a latest commit in a repo?
Starting with v1.11 Go added support for modules. Commands
go mod init <package name>
go build
would generate go.mod and go.sum files that contain all found versions for the package ...
- 9,072
259
votes
6
answers
343k
views
ModuleNotFoundError: What does it mean __main__ is not a package? [duplicate]
I am trying to run a module from the console. The structure of my directory is this:
I am trying to run the module p_03_using_bisection_search.py, from the problem_set_02 directory using:
$ python3 ...
- 67.7k
248
votes
36
answers
292k
views
Android Studio: Module won't show up in "Edit Configuration"
I've imported a project to Android Studio with several subprojects.
I want to run a subproject.
I successfully made this subproject's build.gradle as a module.
In order to run it, I went to Run >...
- 3,139
247
votes
24
answers
388k
views
What's the easiest way to install a missing Perl module?
I get this error:
Can't locate Foo.pm in @INC
Is there an easier way to install it than downloading, untarring, making, etc?
242
votes
13
answers
384k
views
Generate random numbers with a given (numerical) distribution
I have a file with some probabilities for different values e.g.:
1 0.1
2 0.05
3 0.05
4 0.2
5 0.4
6 0.2
I would like to generate random numbers using this distribution. Does an existing module that ...
- 8,038
234
votes
16
answers
172k
views
How to deal with cyclic dependencies in Node.js
I've been working with nodejs lately and still getting to grips with the module system, so apologies if this is an obvious question. I want code roughly like the below:
a.js (the main file run with ...
- 3,088
228
votes
2
answers
210k
views
What to put in a python module docstring? [closed]
Ok, so I've read both PEP 8 and PEP 257, and I've written lots of docstrings for functions and classes, but I'm a little unsure about what should go in a module docstring. I figured, at a minimum, it ...
user297250
220
votes
7
answers
237k
views
Export multiple classes in ES6 modules
I'm trying to create a module that exports multiple ES6 classes. Let's say I have the following directory structure:
my/
└── module/
├── Foo.js
├── Bar.js
└── index.js
Foo.js and Bar.js ...
- 3,166
218
votes
14
answers
291k
views
PyCharm error: 'No Module' when trying to import own module (python script)
I have written a module (a file my_mod.py file residing in the folder my_module).
Currently, I am working in the file cool_script.py that resides in the folder cur_proj. I have opened the folder in ...
- 4,519
218
votes
5
answers
127k
views
How do I use a macro across module files?
I have two modules in separate files within the same crate, where the crate has macro_rules enabled. I want to use the macros defined in one module in another module.
// macros.rs
#[macro_export] // ...
- 5,290
215
votes
11
answers
171k
views
Can I invoke an instance method on a Ruby module without including it?
Background:
I have a module which declares a number of instance methods
module UsefulThings
def get_file; ...
def delete_file; ...
def format_text(x); ...
end
And I want to call some of ...
- 123k
209
votes
28
answers
277k
views
Android Studio Run/Debug configuration error: Module not specified
I am getting a 'Module not specified' error in my run config. I have no module showing in the drop down yet I can see my module no probs. The issue came about when I refactored my module name, changed ...
- 11.1k
207
votes
3
answers
186k
views
Execution of Python code with -m option or not [duplicate]
The python interpreter has -m module option that "Runs library module module as a script".
With this python code a.py:
if __name__ == "__main__":
print __package__
print __name__
I tested ...
- 188k
207
votes
15
answers
537k
views
Can't import my own modules in Python
I'm having a hard time understanding how module importing works in Python (I've never done it in any other language before either).
Let's say I have:
myapp/__init__.py
myapp/myapp/myapp.py
myapp/...
user623990
203
votes
3
answers
102k
views
What does a . in an import statement in Python mean?
I'm looking over the code for Python's multiprocessing module, and it contains this line:
from ._multiprocessing import win32, Connection, PipeConnection
instead of
from _multiprocessing import ...
- 15.8k
201
votes
7
answers
116k
views
module is not defined and process is not defined in eslint in visual studio code
I have installed eslint in my machine and i have used visual studio code
i have certain modules and process to be exported
When i try to use "module" or "process" it shows
it was working fine before.
...
- 2,041
194
votes
6
answers
160k
views
Can you define aliases for imported modules in Python?
In Python, is it possible to define an alias for an imported module?
For instance:
import a_ridiculously_long_module_name
...so that is has an alias of 'short_name'.
- 36.9k
193
votes
16
answers
507k
views
Python can't find module in the same folder
My python somehow can't find any modules in the same directory.
What am I doing wrong? (python2.7)
So I have one directory '2014_07_13_test', with two files in it:
test.py
hello.py
where hello.py:
...
- 4,132
191
votes
4
answers
144k
views
Can I use __init__.py to define global variables?
I want to define a constant that should be available in all of the submodules of a package. I've thought that the best place would be in in the __init__.py file of the root package. But I don't know ...
- 4,772