I am very new to Python and have reviewed multiple questions here on problems getting packages/modules to import but can't seem to work out what I'm doing wrong. I'm simply trying to import packages and use them in the Spyder console, I'm used to working in R Studio so that's kind of my point of reference.
I run the below code and receive the following messages.
pip install Pillow
Requirement already satisfied: Pillow in c:\users\name\anaconda3\lib\site-packages (7.0.0)
Note: you may need to restart the kernel to use updated packages.
import Pillow
Traceback (most recent call last):
File "<ipython-input-7-f4cbff62aba7>", line 1, in <module>
import Pillow
ModuleNotFoundError: No module named 'Pillow'
I also seem to be getting different results when I run pip install from the console vs from the text editor portion. When I run it from the console, I get the above result about it already being installed. When I run it from the text editor portion, I get the following.
runcell(0, 'C:/Users/name/.spyder-py3/temp.py')
File "C:\Users\name\.spyder-py3\temp.py", line 1
pip install Pillow
^
SyntaxError: invalid syntax
Related
I ran into some problems with some pip installations. I have found a way of installing that works, but I feel like it's wrong.
I installed pygame from the cmd prompt and got this message:
Defaulting to user installation because normal site-packages is not
writeable Requirement already satisfied: pygame in
c:\users\Somenewguy\appdata\roaming\python\python310\site-packages
(2.1.2)
But when I went to pycharm and started my project, I got this message:
Traceback (most recent call last):
File "C:\Users\Somenewguy\Python Projects\new\main.py", line 1, in <module>
import pygame
ModuleNotFoundError: No module named 'pygame'
I then did the pygame pip installation from the terminal in pycharm. But this time I installed it directly into the project folder, and that approach worked.
This is the only way I can import pygame into my projects which I think is weird.
Why do I have to install this package for each project?
If you use a virtual-environment, this is the expected behavior. If you don't want to install it every time, use the system environnement.
I'm trying to use opencv-python. I imported with pip but it throws ModuleNotFound.
Joshua-Tews-MacBook-Pro:~ nathan$ pip install opencv-python
Requirement already satisfied: opencv-python in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (4.0.0.21)
Requirement already satisfied: numpy>=1.14.5 in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (from opencv-python) (1.16.2)
I import with this:
import cv2
I get this error:
Traceback (most recent call last):
File "/Users/nathan/Library/Mobile Documents/com~apple~CloudDocs/CEP/Y4/Capstone Project (Security Cameras System)/cep-ml-capstone/VideoProcessor.py", line 1, in <module>
import cv2
ModuleNotFoundError: No module named 'cv2'
I've look at the answers on this stackoverflow thread, none seem to help: Cannot import cv2 in python in OSX
Others have solutions I completely didn't recognise pertaining to other OS so I skipped those.
Okay I apparently I just had to run the script with Python 3.7 and it worked. I neglected to mention I was using Textmate.
To run scripts in Python 3.7 using Textmate, go to Preferences > Variables. If there isn't a variable named TM_PYTHON, create one then paste this in for the value: /Library/Frameworks/Python.framework/Versions/3.7/bin/python3. Else, just change the value. Be sure to check the box next to the variable.
Adding modules has been very confusing on my laptop. Whenever I run the pip command, it will appear to be successful – for example:
> pip install selenium
Requirement already satisfied (use --upgrade to upgrade): selenium in /usr/local/lib/python2.7/dist-packages
However, when I try to use it in running python example.py, I get:
Traceback (most recent call last):
File "scriptattempt.py", line 2, in <module>
from selenium import webdriver
ImportError: No module named selenium
Where this happens with pretty much any modules I try to import. Not exactly sure why, I installed python 3 in the past, so I wasn't sure if maybe that's causing problems. I tried python3 example.py, but got the same error for packages in the line before.
I looked in at my site-packages file, at location: /usr/local/lib/python2.7/site-packages
but it's empty. Is this my problem? Is pip not unpacking in the correct location?
Depending on which installation of Python I am using I have some problems to load a module. When I type
from quantecon import approx_markov
in the terminal using Python 3.4.0, the following error message is returned:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python3.4/dist-packages/quantecon/__init__.py", line 6,in <module>
from asset_pricing import AssetPrices
ImportError: No module named 'asset_pricing'
In the folder /usr/... as referred to above, I do however find a module called asset_pricing. (I have to admit that I additionally do not understand why the module asset_pricing interferes.)
I installed quantecon with:
pip3 install quantecon
I suspect that the problems are related to the Python version I am using. I also installed
pip install quantecon
and when I call the module approx_markov form the terminal, using Python 2.7.6 (I think this is the standard Python version of the OS I am using) I do not receive any error message. To solve the problem I already followed the instruction in the following discussion but to no avail Python3 has no acces to python2 modules (ubuntu).
The currently released version of quantecon is not Python 3 compatible; it uses relative imports and these are not supported anymore in Python 3.
The version in the source repository has been refactored and updated, and looks like it'll work with Python 3. You'll need to install that version instead:
pip3 install -U git+https://github.com/jstac/quant-econ.git
where -U tells pip3 to upgrade the package.
Note that there have been a lot of changes recently; use at your own risk. You could stick with Python 2 and wait for an official release.
I have extracted ipython-1.1.0.tar.gz in /usr/lib/ipython-1.1.0 and have run the following commands to finish the build and installation:
root#my-laptop:/usr/lib/ipython-1.1.0# python setup.py build
root#my-laptop:/usr/lib/ipython-1.1.0# python setup.py install
I am using Python 2.6 and is installed under /usr/bin/python2.6 and have my additional packages under /usr/lib/python2.6/site-packages/
Now, when I am trying to start ipython notebook from shell command, I am getting the following ImportError message:
root#my-laptop:/usr/lib/ipython-1.1.0# ipython notebook
Traceback (most recent call last):
File "/usr/local/bin/ipython", line 5, in <module>
from IPython import start_ipython
ImportError: cannot import name start_ipython
When I tried to start the IPython instance as mentioned in README.rst file, I got the following message:
root#my-laptop:/usr/lib/ipython-1.1.0# python -m IPython
/usr/bin/python: IPython is a package and cannot be directly executed
I tried easy_install and pip install
root#my-laptop:/usr/lib/ipython-1.1.0# easy_install ipython
Searching for ipython
Best match: ipython 1.1.0
Adding ipython 1.1.0 to easy-install.pth file
Using /usr/local/lib/python2.6/dist-packages
Processing dependencies for ipython
root#my-laptop:/usr/lib/ipython-1.1.0# pip install ipython
Requirement already satisfied: ipython in /usr/lib/pymodules/python2.6
Installing collected packages: ipython
Successfully installed ipython
But the ImportError problem still remains unresolved. This is not allowing to open the interactive Python.
I found some solution in the below link, but not sure about it:
https://trac.macports.org/ticket/40119
I just ran into this problem as well. Are we sure the IPython API didn't change? I got something that looks right working with:
import IPython
IPython.Shell.start()
edit:
ok, nvmind. There was also another program I installed at the same time that decided to change PYTHONPATH.
This worked for me:
import IPython
IPython.start_ipython()