On my mac I switched python versions to 3.7 and when using the command python -V in the terminal it shows that it successfully switched. Webots still shows that the deprecated 2.7 version is being used. When I checked the command, it says python
I've messed with creating a runtime.ini as well, which seemed to work but doesn't recognize webot modules like "Controller," or "Robot." Though I can't find anything about what the module names would be and how I could include them in the Options for the runtime.ini with the -m flag.
Any help would be appreciated, thanks
I was able to solve this by setting the absolute path, shown in the image link, to a valid version of Python 3 in the Webots->Preferences command field. I had a slight error with NumPy not coming with this version but was easily fixable by doing <absolute-path-to-version-specified> -m pip install NumPy
I hope this is helpful to others as it was the last thing I tried and cost me some time.
Webots preferences screenshot example
Related
I tried to download an external module to test how it works, by simply downloading 'Simplejson' using pip in cmd(Window). I watched my teacher did it, and followed it the exact way but i ran into a problem.
Not sure what i did, because my teacher just told me to follow him, i think we created a virtual environment on python so that we can do more than one projects with various versions of python. Anyway, most of you will know that after creating a virtual environment in my folder that i work for coding, a 3 new folders will appear and 'Simplejson' will be inside Lib\site-packages. Even if i checked that Simplejson is still inside the file, some how i can not import it. Are there any way that i can solve it?
enter image description here
Please refer to the following to check the process of installing and using the module "Simplejson" in VS Code:
Please check whether the python currently used by the VS Code terminal is the same as the one displayed in the lower left corner of the VS Code: (python --version or pip --version)
(If they use different pythons, please open a new VS Code terminal, it will automatically enter the selected environment.)
Then install the module "Simplejson".
Check the installed modules: (pip show Simplejson)
Run:
Reference: Python Environments in VS Code.
I'm having a problem with importing modules in python.
When I run my program in the command line it works perfectly fine.
However, when I try to run the same program in the python shell I am prompted with the following error:
ModuleNotFoundError: No module named 'matplotlib'
I already successfully installed matplotlib using 'python -m pip install matplotlib'.
I've read this can happen when you have two different versions of python installed; however, I don't.
I've uninstalled and reinstalled python and I still am having the same issue. I've also uninstalled and reinstalled matplotlib using pip.
I believe my problem is the module paths that python uses to search for imported modules are different between the two.
When I use the 'print(sys.path)' command in the python shell and the command line I get two different outputs.
Any help would be greatly appreciated!!!
The file different system paths between the python shell and the command line
You have two versions of python. I would recommend you to remove all pythons you have and go for anaconda https://www.anaconda.com/distribution/. It will fix your path problems and allow you to create environments with different versions of python. This is the least painful way also for future :) good luck.
I suppose, you have both of the Python versions installed on the same computer.
If that is so, then my answer would be to go inside both Python script folders and install matplotlib on both of them.
I have also faced that issue. My path includes pip of Python 3.7.1 and whenevwer I try to import modules on Python 3.4. It throws an error!
Maybe, you could add both of the Pythons to the path.
I encountered this same problem – python -c "import sklearn" would work just fine, but import sklearn inside a Python program failed. Both my one-liner and program was using the same Python version (version 3.8.10).
I eventually got the program to work by replacing the shebang line (originally #!/usr/bin/python) with #!/bin/env python.
I don't know why this worked exactly (sorry). Presumably some path got reset, and the module loaded from a different location, but it might help someone so I'm posting it here nontheless. (If you know more, feel free to edit this answer.)
I'm getting:
"ImportError: No module named builtins"
that has only started happening after I installed a later version of PsychoPy (an application that uses Python that is used for writing psychology experiments). I was not getting this problem with an older version
I tried doing "sudo pip install future" like someone else recommended for fixing a similar problem. However, when I do this I get an "invalid syntax" error, and don't know of any other way around the problem. I would greatly appreciate any help on this.
Edit
Could it be you enter the command into a Python prompt? You are supposed to enter that command on the command line of your operating system shell. Which means not inside Python.
Original Answer
Like Deesha already mentioned in their comment, you must install the future package into the Python environment you wish to run PsychoPy in, e.g. via pip:
pip install future
or via conda:
conda install future
This is because newer versions of PsychoPy support both Python 2.7 and 3. The future package is used to ensure the code runs on both platforms.
When I try and use easy_install PIL it will give me the error:
File "setup.py", line 182
print "--- using Tcl/Tk libraries at", TCL_ROOT
^
SyntaxError: invalid syntax
It is extremely annoying and I have tried installing it from a package as well. I've downloaded Imaging-1.1.7 and it gives the same error. I am trying to get the Image module in Python 3.4.1. I've tried installing Pillow 2.4 but it doesn't show up in the module list when I type pydoc3.4 modules and none of the applications even detect it's existence. Please help because I am getting desperate. I am on Mac OS X 10.8.4 with Python 3.4.1.
That syntax for print only exists in Python 2.x, where print is a statement. However, it was removed entirely in Python 3.x when print became a function.
This means that your version of PIL is incompatible with Python 3.x. So, you now have two options:
Get a version of PIL that is compatible with Python 3.x. This question has more information on that.
Downgrade to Python 2.x.
I have also tried brew install PIL and pip install PIL and I encountered the same issue, because I'm using python 3.4. But I just solved the problem today. This is thanks to Ned Deily's answer above, which i need to figure out first how to do since i'm not well experienced with pip stuffs.
So to do it, you need to head over to https://pypi.python.org/pypi/Pillow/ and click the latest version. (found version 2.6.1 at the time of this writing). You should see something like Pillow-(version).tar.gz (found Pillow-2.6.1.tar.gz). Just right click it and copy link address if you're using chrome browser and type in the following in your terminal.
pip install https://pypi.python.org/packages/source/P/Pillow/Pillow-2.6.1.tar.gz#md5=4b77fb0c81bbe0c8bf90c6eea960e091
that should do the trick
I am having serious issues trying to download the "therubyracer" gem. I think the problem is that I do not have a working libv8 library to create the gem.
I think I do not have a working libv8 because my RubyGems keeps trying to use "Python 2.5.6", which is too old to gem install libv8. I tried countless ways to update the Python that RubyGems uses, however, I cannot figure it out.
Here is what I have done thus far. I went to http://www.python.org/download/releases/3.3.2/ and downloaded "(Mac OS X 64-bit/32-bit Installer (3.3.2) for Mac OS X 10.6 and later 2.)".
Upon completion of the download, I ran:
gem install libv8 --version 3.11.8.17
Yet, I still received the same error. I noticed the output still said:
"Using Python 2.5.4"
Despite downloading a newer Python version, it is not being used. So how do I change the version of Python that the "gem" command uses? I searched and discovered "virtualenv," which appears to be a good Python manager, however I am a bit at a dead end now. Any help or suggestion?
If libv8 uses the python command from the command line, this should apply:
If you do not care what python2 is installed, you can do this in the command line:
type python # this gives you the path of the python command
python is /usr/bin/python
type python2.7
python is /usr/bin/python2.7
Then you can copy one over the other
cp /usr/bin/python2.7 /usr/bin/python
You can safely copy python2.7 there because it is compatible with older versions.
Suggestions?