I want to install repast4py in windows10, But when I enter 'pip install repast4py' in cmd, It displays the error "MPI compiler is not specified. Please specify the MPI compiler using the 'cc' environment variable"
Thanks for the Answer.
cmd picture
I install mpi4py with 'pip install mpi4py' in windows10, and it installed, but when in python, I recall MPI from mpi4py, It gives an error.
error for import MPI
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I was previously running into environment inconsistencies after downloading tensorflow with pip in a conda environment, and after several hours of frustration, decided deleting anaconda/miniconda and python and starting from scratch would be my best option to get python working again (The inconsistencies were causing a plethora of issues with loading other modules like numpy, etc).
After downloading Python version 3.9.10 directly from https://www.python.org/downloads/macos/, I wanted to see if I could start using Python again in a Jupyter notebook in VS Code. When I try to run a simple print('hello world') in a python chunk I (unsurprisingly) get the following error:
Jupyter cannot be started. Error attempting to locate jupyter: Running cells with 'Python 3.9.10 64-bit' requires notebook package.
Run the following command to install 'jupyter and notebook' into the Python environment.
Command: 'python -m pip install jupyter notebook -U'
I was pretty much expecting this error, since I knew I had deleted all packages when deleting Anaconda and Python.
However, when I try running python -m pip install jupyter notebook -U in the terminal I ultimately get the following error:
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
error: command '/usr/bin/gcc' failed with exit code 1
[end of output]
note: This error originates from a subprocess, and is likely not a problem with pip.
error: legacy-install-failure
× Encountered error while trying to install package.
╰─> psutil
note: This is an issue with the package mentioned above, not pip.
Any help or insight is greatly appreciated! I am on MacOS (M1) if that is useful information.
The problem seems to be with the python3 distribution that comes with MacOSX Command Line Tools. Well, at least that same error was gone after following these steps.
So, to fix the problem I installed python3.9 (I presume you can change 3.9 to your desired version, e.g. 3.8 or 3.10) using Homebrew.
Install Homebrew (to check if it's installed already just type brew --version in the terminal):
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
Install python3.9
brew install python#3.9
Create your virtual environment
python3.9 -m venv myvenv
Activate the virtual environment with source myvenv/bin/activate
Finally, install Jupyter using
(myvenv) pip install jupyter notebook
I have the same problem when installing the Jupyter notebook on MacOS 12.5 M2 chip. It turns out that the error is caused by not having GCC on my mac to run the wheel for installing the psutil package because for some reason I removed my XCode from my Mac. So I installed XCode from AppStore and opened XCode after the installation to agree to its terms and conditions. After Xcode went through the setup process I tried pip install jupyter again and it worked well.
In my case, I just opened the XCode, accept the terms and the installation proposed, and tried to install the jupyter again and it worked!
It seems to be very particular about the version of python installed. I set up a fresh installation on a new box this morning and put 3.11 on there. pip install jupyterlabs gave me the same error as you got. I then uninstalled python and installed an earlier version, and now it works.
PS the older version that worked for me is 3.10.8
I have Spyder, clean Win10 installation, ver. 4.2.3.
When I run command pip, it gives message:
Note: you may need to restart the kernel to use updated packages.
C:\Users\UserName\AppData\Local\Programs\Spyder\Python\python.exe: No module named pip
I restarted Spyder, Win10, nothing helps.
How to fix it?
Thanks.
(Spyder maintainer here) We don't provide pip in our Windows app to prevent people breaking Spyder by installing any kind of packages with it.
The best way to use other packages that don't come with our app is to install Miniconda, create a conda environment after that with the packages you want to use and spyder-kernels, and finally connect Spyder to that env.
If you have python 3.4+ then pip should be installed with python.
To check that, you can run
pip help
in your windows command line.
However, if it isn't the case then download the get-pip.py file and run
python get-pip.py
and the pip installation should start. You can use pip help to verify this.
Another source of the problem might be that pip isn't listed in your PATH variables and thus isn't recognized by your command line.
I am trying to install TensorFlow. The installation instruction for Windows (https://www.tensorflow.org/install/install_windows) have as first step to install Python 3.5.2. And I'm doing the 'TensorFlow with CPU support only'.
Python was successfully installed in my computer as I can run it via the Start menu.
However, when I try to do the 2nd step of the installation instructions in order to install TensorFlow, this step says to:
To install TensorFlow, start a terminal. Then issue the appropriate pip3 install command in that terminal. To install the CPU-only version of TensorFlow, enter the following command:
C:\> pip3 install --upgrade tensorflow
But I'm getting an error when I perform the above statement, the error is
'pip' is not recognized as an internal or external command, oprable program or batch file.
I looked at several postings in StackOverflow and tried the commands provided in one of the postings, but I would get the same type of error.
So, how is 'pip3' installed? from what I read, it is supposed to be installed together with the installation, but obviously that did not happen.
How do I install it? I need to install TensorFlow and it seems that it needs to be done via the pip3 installation tool.
Thank you in advance for your help!
Either set the system environment path variable to include the python 3.5.x path in it, or just cd into the correct python folder to run pip3 from there.
The folder in windows 10 should be something like this:
C:\Users\YOUR_USERNAME\AppData\Local\Programs\Python\Python35\Scripts
Open the terminal, cd to that path (change YOUR_USERNAME to the correct user) and then just run the following command:
pip3 install --upgrade tensorflow
and if you want the gpu version:
pip3 install --upgrade tensorflow-gpu
Pip3 is already installed when you install Python, so there is no need to do anything else.
I have pythone3.5 and I am trying to install the Scipy module. I tried "pip install scipy" but it shows an error "numpy.distutils.system_info.NotfoundError: no lapack/blas resources found". I also tried to use "scipy-0.19.0-cp35-cp35m-win_amd64.whl" from "http://www.lfd.uci.edu/~gohlke/pythonlibs/#scipy" but it also didn't work, it shows "scipy-0.19.0-cp35-cp35m-win_amd64.whl is not a supported wheel on this platform"
What should I do?
Try this:
pip3.5 install scipy
I'm following instructions to create a Tensorflow environment for a Machine Learning course, with python 3.5, ipython and jupyter.
I created a Tenserflow environment with python 3.5 using conda create -n tensorflow python=3.5. That worked.
Then I ran conda install -c conda-forge tensorflow. That also worked.
Then I installed ipython with conda install ipython, which also worked fine.
However, when I ran pip3 install jupyter, I got error message bash: pip3: command not found.
I found a few posts about variations on pip3 problems and (within the Tensorflow environment):
When I type pip --version, it tells me I have version 8.1.2
When I try locate pip3, I get WARNING: The locate database (/var/db/locate.database) does not exist
I tried using pip-3.2 as recommended in one of the other questions' solutions (which worked for that OP), and I get the same command not found error message.
I'm using OS X 10.8.5
pip is different from pip3. So you might need to install it if it can't be found. If it is installed run this:
sudo updatedb
this will update the locate function.
if you're using conda why do you want to install it with pip anyways?
Jupyter is the new version of ipython. running conda install ipython installs ipython (now jupyter).