I just installed numpy on my PC (running windows 10, running python 3.5.2) using WinPython, but when i try to import it in IDLE with: import numpy I get the ImportError: Traceback (most recent call last):
File "C:\Users\MY_USERNAME\Desktop\DATA\dataScience1.py", line 1, in <module>
import numpy
ImportError: No module named 'numpy'.
Did I possibly install it incorrectly, or do I need to do something else before it can be used?
In Linux and Mac OS systems we can install modules directly by mentioning
pip install modulename (or) sudo pip install modulename
in terminal or command prompt.
But in windows we should mention location of python folder in c directory like c:\python3 and later we should use
pip install modulename
in command prompt or terminal.
or
go n check whether numpy module is installed in sitepackages of python 3 folder in c directory or not.
Support for Python 3 was added in NumPy version 1.5.0, so to begin with, you must download/install a newer version of NumPy.
or use this command to install numpy. This will install the latest version of numpy.
pip install numpy
Winpython has two size, and the smallest "Zero" size doesn't include numpy
Related
I have Python 3.7.3 installed and installed numpy, scipy via pip (cmd -> python -m pip install --user numpy scipy) and am able to import numpy, scipy if I use an admin command prompt to import both numpy and scipy. However, if I don't use an admin cmd prompt, or try to import scipy from the Python shell, I receive traceback errors like the following:
>>> import numpy
>>> import scipy
Traceback (most recent call last):
File "<pyshell#11>", line 1, in <module>
import scipy
ModuleNotFoundError: No module named 'scipy'
Does this traceback error come from not installing scipy in a certain way? Thanks for the help in advance.
When doing checking pip and python versions in cmd, here's my output:
pip --version
pip 19.1 from c:\program files\python37\lib\site-packages\pip (python 3.7)
python --version
Python 3.7.3
Add the location of your python scripts to the Path in Environment Variables.
C:\Users\User_Name\AppData\Roaming\Python\Python37\Scripts
You mentioned that you've already installed the packages. And the packages are stored in the site-packages file inside Python37 folder. So the error must be because you didn't add these to the path.
I have two python distributions(python2.7,python3.6) and in both I have installed pandas and numpy as well but cant use
These are the errors caused when i tried to import pandas
in python 2.7
File "/usr/local/lib/python2.7/dist-packages/pandas/init.py", line 19, in
"Missing required dependencies {0}".format(missing_dependencies))
ImportError: Missing required dependencies ['numpy']
then imported numpy
ImportError:
Importing the multiarray numpy extension module failed. Most
likely you are trying to import a failed build of numpy.
If you're working with a numpy git repo, try git clean -xdf (removes all
files not under version control). Otherwise reinstall numpy.
Original error was: cannot import name multiarray
in python 3.6
Traceback (most recent call last):
File "", line 1, in
ModuleNotFoundError: No module named 'pandas'
Most of these cases, the problem is that you are installing pandas in another environment. The easy solution here is using Anaconda.
Anaconda is focused on environments. First, you should choose installation of python2 or python3. Then, you can install this version of Anaconda in Linux: https://www.anaconda.com/download/#linux
For example:
64-Bit (x86) Installer (622 MB) Python3:
$ wget https://repo.anaconda.com/archive/Anaconda3-5.2.0-Linux-x86_64.sh
Then you need, install in your system:
$ bash Anaconda3-5.2.0-Linux-x86_64.sh
Be cautious in the interactive dialog in order to install Anaconda. Remember the route of the installation.
When you have Anaconda in a folder named: anaconda 3 (for example). go to route: .../anaconda3/bin.
Now, you should execute:
$ source activate
Now you are in base environment, you can install the packages that you need (pandas and numpy are install by default). However, I recommend you create a new environment for each new proyect (see https://conda.io/docs/_downloads/conda-cheatsheet.pdf).
Imagine that you have (base) environment. In this environment try:
$ python
The first message gives you the python version. Anyway you can try:
>>> import sys
>>> sys.version
In order to know the version that you are using.
I've used the following tutorial to install Python, numpy, scipy and matplotlib:
https://penandpants.com/2012/03/01/install-python-2/
I downloaded each and installed by double-clicking. I'm using a Mac with OS X Yosemite Version 10.10.5
When I try to import numpy, scipy and matplotlib in IDLE I get the follow error message:
`>>> import numpy
Traceback (most recent call last):
File "<pyshell#2>", line 1, in <module>
import numpy
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/__init__.py", line 137, in <module>
import add_newdocs
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/add_newdocs.py", line 9, in <module>
from numpy.lib import add_newdoc
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/lib/__init__.py", line 4, in <module>
from type_check import *
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/lib/type_check.py", line 8, in <module>
import numpy.core.numeric as _nx
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/core/__init__.py", line 5, in <module>
import multiarray
ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/core/multiarray.so, 2): no suitable image found. Did find:
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/core/multiarray.so: no matching architecture in universal wrapper`
Can anyone please explain to me how to resolve this?
Thanks
use terminal and type
sudo pip install numpy
sudo pip install matplotlib
sudo pip install scipy
for python3+ use pip3
I can't say for sure what's wrong with your installation, but I suspect it's due to a some PATH-conusion... Python 2.7 and Numpy should be installed on your Mac by default.
If you run the command which python, you'll see which executable the python-commands invokes... is it the same as the one you installed?
If you write python in the terminal, and press tab twice, do you see multiple options of installed python versions?
Alternative method of installation
I prefer the Anaconda Python Distribution, which you can download like the full version or minimal version, which is the one I prefer.
If you install this, you should consider uninstalling the one you just installed.
Here's how to install the mini version:
Download the installer, and run it by opening a terminal in the folder with the installer, and running the command bash Miniconda2-latest-MacOSX-x86_64.sh. This will start the text-based installer, and if you read the instructions on screen, you'll be fine.
Notice that you have to scroll to the end of the licence agreement, before you can write yes when asked to accept the terms stated.
Say yes when it asked you if you'd like it to add Anaconda Python to your path.
Anaconda Python is different from other python distributions in the regard that it comes with it's own package and environment manager conda. With conda you can have multiple versions of Python installed at the same time (or several environments of the same Python version, but with different packages or versions of packages).
To create a new environment with the name py27, which is using Python 2.7, write conda create -n py27 python=2.7 --yes. Once created, activate the environment by source activate py27.
With the new environment now active, install the packages you need by using conda: conda install scipy matplotlib --yes.
I'd also recommend installing Ipython, which is an improved shell, and possibly the Jupyter notebook: conda install ipython --yes and conda install notebook --yes.
Hope it helps.
I tried installing numpy with homebrew, but instead it installed in the Python 2.7 version. I found this out by following the answer on this post: Can't import numpy
Which is very strange especially since I specifically asked for python3:
M$ brew install numpy --with-python3
Warning: homebrew/python/numpy-1.11.1 already installed
However, when I try importing it in Python 3.5 I always get the same error:
File "Dataframe.py", line 1, in <module>
import numpy as np
ImportError: No module named 'numpy'
How can I get it to work as intended? I am on mac os 10.11.3
Check that you have Python 3.5 installed by running which python3 and which python (to make sure your versions aren't mixed up).
Then, to install for Python 3, you should run pip3 install numpy. It's a good idea to use the given Python tools to install Python-related packages.
Trying to install OpenCV and running into an issue where attempting to import cv2 results in this output -
RuntimeError: module compiled against API version 9 but this version of numpy is 7
Traceback (most recent call last):
File "<pyshell#4>", line 1, in <module>
import cv2
ImportError: numpy.core.multiarray failed to import
I'm running on Windows 7 x64, Python v 2.7.9
Thanks!
The error is telling you that you have an out of date version of numpy. If you used pip to install things you can simply run pip install numpy -U, or download the appropriate version from their website.
In case
pip install -U numpy
doesn't work (even with sudo), you may want to make sure you're using the right version of numpy. I had the same "numpy.core.multiarray failed to import" issue, but it was because I had 1.6 installed for the version of Python I was using, even though I kept installing 1.8 and assumed it was installing in the right directory.
I found the bad numpy version by using the following command in my Mac terminal:
python -c "import numpy;print numpy.version;print numpy.file";
This command gave me the version and location of numpy that I was using (turned out it was 1.6.2). I went to this location and manually replaced it with the numpy folder for 1.8, which resolved my "numpy.core.multiarray failed to import" issue. Hopefully someone finds this useful!
I had a similar problem and I solved it by downgrading my numpy version.
What I did was:
pip install opencv-python
pip uninstall numpy
pip install numpy=1.18
This has worked for me using
Python 3.7
opencv-python 4.4.0.46
numpy 1.18.0
linux: sudo apt-get install python-numpy
if you are using ubuntu bionic beaver then try running: sudo apt-get install python-numpy
had the same issue, resolve by running the above command.
Hope it helps
In your environment you can try this command:
conda uninstall numpy
conda install -c conda-forge numpy
I use Python 3.7 # RPI 4.
For opencv to install properly I had to install the listed libraries below.
(Not every package was actually installed, after request)
Regarding Numpy, I think one should stick to the latest version.
For me what worked is to uninstall the existing version 1.16.2 and stick with the current stable 1.21.2.
Stackoverflow topic at missing libraries here: ImportError: libcblas.so.3: cannot open shared object file: No such file or directory.