How can I install pythonds module? - python

when I run a programme containing:-
from pythonds.basic.stack import Stack
it says:-
ImportError: No module named pythonds.basic.stack
Please help me out.

pip install pythonds.
And then from pythonds.basic.stack import Stack. Note that it's Stack, not stack.

If you don't have the Python PATH variable configured, then type this into your command prompt:
C:\Python34\Scripts\pip install LIBRARY NAME
This path is only and example. change it wherever you have Python in your pc.

Related

ModuleNotFoundError: No module named 'term'

What is wrong here? I have python 3.8 but keep getting the error message above when I try importing 'colored' from the termcolor library. What should I try? Thank you.
because it is not installed into anakonda's dependencies . (You may installed them into another Python dependencies).
at first determine where your python is located
import sys
sys.executable
you will gain something like '/Users/some_user/opt/anaconda3/bin/python'
Then go to this direction
cd /Users/some_user/opt/anaconda3/bin/python
and install missing package
./pip install term

Trying to import GitHub module

I'm trying to import https://github.com/chrisconlan/algorithmic-trading-with-python in my code. I've never imported anything from GitHub before and have looked at various other questions that have been asked on Stack Overflow regarding this problem but it just doesn't work. When I try to run the 'portfolio.py' code for example I keep getting a ModuleNotFound error for 'pypm'. What exactly is the correct way to import such a module or the whole GitHub directory?
I'm working with Visual Studio Code on Windows.
You will need to pip install the module. In your case the command you would need to run is python -m pip install -U git+https://github.com/chrisconlan/algorithmic-trading-with-python. Once you have done that you need to find the name of the module. You can do this with pip list. Find the name of the module you just installed.
Then you just stick import <module name> at the top of your code with the rest of your imports.
What i used to do in this is to clone the repository on the folder where are installed the python's packages. This is useful when you do not want to use the pip cmd tool, keeping the pip's cache memory under control.

Downloaded package ImportError

I have recently installed python 2.17.14 to use a package which I installed in the command prompt with:
python -m pip install packageName
However, whenever I try to use it with a script provided by the package authors, I get Import Errors:
ImportError: cannot import X from YX
ImportError: attempted relative import with no known parent package.
I don't know what I'm doing wrong, as I am really new to Python. Does anyone have any ideas?
The package is called neurodesign and I downloaded the try out script from the official website "neuropowertools.org"
Best,
Max
In case anyone (who is also new to python^^) fails ridiculously at this task as well: I had to manually install all the modules used within this package for it to work as they weren't installed automatically.

Python: No Module named xxx

Im getting nowhere with the following error on my Raspberry Pi:
My own Python script calls a function from another module named BlackBean.py which in turn imports other modules called "netaddr" and "configparser". The problem is that I just cant seem to get past the import error which tells me " No Module named netaddr, or if I comment out that import then it also errors with No Module named configparser. So I know its a path issue but I just cant seem to get it fixed!
The Blackbean.Py script starts like this:
import broadlink
import ConfigParser
import sys, getopt
import time, binascii
import netaddr
import BlackBeanSettings
import re
from os import path
from Crypto.Cipher import AES
SettingsFile = ConfigParser.ConfigParser()
SettingsFile.optionxform = str
SettingsFile.read(BlackBeanSettings.BlackBeanControlSettings)
def execute_command(etc.........
The BlackBean.py file is in my project SkyHD folder at /home/pi/SkyHD.
The "netaddr" and "configparser" files & folders were installed by pip in /home/pi/.local/lib/python2.7(and python3.5)/site-package folders.
sys.path has the above folders in its list and Ive also edited .bashrc and added PYTHONPATH=${PYTHONPATH}:/home/pi/.local/lib/python2.7/site-package:/home/pi/.local/lib/python3.5/site-package:/home/pi/SkyHD:../
but none of this works. I guess it must be something basic but I just cant work it out! help!
Also, some more info, when I first install all the files and run my program everything works fine and it finds the files ok with no problems, its only when I reboot it fails to find the files.
Its fixed.
Python looks for imported modules in 3 places, the first being the folder you launched the python script from; so for me the obvious answer is to import the modules I need directly into my own Project folder (/home/pi/myproject). This worked just fine, it works every time even after reboot, which was my main problem before. No need to create or alter PYTHONPATH, no need to mess around with entries in .bashrc or try to change the python path entries. Here are the steps:
Upgrade PIP to version 9.0.3 (not ver 10) with
pip install --upgrade pip==9.0.3
then install the required modules with the following
pip install --target=/home/pi/your_project_folder module_name
so for me it was... pip install --target=/home/pi/SkyHD netaddr
Im sure this is not best practice, but my Raspberry Pi only has this one project to run and having modules imported into the Projects folder just isnt an issue.
Hope this helps some others with the same problem.
You've provided insufficient information. Specifically, details about the python command being used to run your script such as its version (python -V) and its module search path if you do
env -u PYTHONPATH python -c 'import sys; print(sys.path);'
Similarly you can easily simplify the problem. What happens if you do python -m netaddr?
Obviously in the above commands substitute the actual python command being used to run your script.
And, as #BoarGules mentioned in his comments to your question, you should never, ever add directories to PYTHONPATH for different python versions unless you know that the modules in those directories has been written to work with python2 and python3.

Python ImportError - Custom Module

I have installed a custom module (Twilio) using PIP, but when I try to import it, it will bring up:
ImportError: No module named 'twilio'
I'm running Windows 10 and Python 3.5. What am I missing? It seems to be an error with the paths. If it is, how do I set the paths?
Edit: I have my PYTHONHOME set to C:\Python33 and my PYTHONPATH set to C:Python33\Lib
First of all you need to check your package location.
pip show custom_package
Then check the system paths by
import sys
sys.path
If you dont' see your package path here, you can add it.
sys.path.append(custom_package_path)
If this doesn't work try reinstalling it. Or you can also install it with easy_install

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