I am trying to install some python packages from the python shell but I get syntaxError. I am using python 3.4.3 which supposed to come with pip installed and I can see pip3 pip3.4, pip, easy_install, and easy_install-3.4 under scripts but whenever I run the command in the shell I get syntax error.
Am I not supposed to use the python shell for package installation? I am using windows 8.1 if that would explain something. I tried these commands:
pip install packageName --- got syntaxError with this message:File '' line 1, pip install(with a mark at last l in install). easy_install packageName generated the same error message but with the mark at the last letter in the packagename, i double checked all spellings but I can't seem to see what the problem is. How can I install packages?
Am I not supposed to use the python shell for package installation?
No. Commands like pip are to be run on the operating system command line (i.e., the "DOS prompt" on Windows).
No you are just to use the Windows terminal for pip package installations.
If that does not work, ensure that you have installed Python properly following this guide Here.
Click Windows(button)+R then type cmd. In there type pip -V, what version does it show?
If you get pip 6.1.1 from C:\Python32\lib\site-packages <python 3.4> (depending on your directory) then you're good, simply make your installations from there.
Related
I am a newbie in Python and had a problem with installing Python packages on my windows computer.
I installed Python itself and then had to install the packages "Numpy" and "Matplotlib" as well. My teacher told us to do it with the commands:
python -m pip install --upgrade pip
pip install numpy
pip install matplotlib
I managed to install Python but when I run the first command to install pip I got the error message telling me that Python is not found. I found the command py -m pip --version here and it worked. After running it pip got installed and I got the message "pip 22.3 from C:\Users\Kaja\Programs\Python\Python310\lib\site-packages\pip (python 3.10)". I guessed this message means that its working.
I had a similar problem with the commands to install Numpy and Matplotlib. It only worked with this commands
py -m pip install numpy
py -m pip install matplotlib
I searched the internet and found this question telling me to run the command doskey py=python and it did not work. But when I swapped py and python so that the command was doskey python=py I eventually could run my teachers commands.
I checked the windows documentation and they are using the same commands as my teacher. I am very curious to know why I had this problem because on my fellow students computers it worked without the doskey command.
Edit:
Thank you very much #RustyPython.
I checked my environment variables and the path to the python.exe was already there.
Out of curiousity I deleted the python.exe from the path variable and although I did that the commands still worked! Another thing I tried was to remove the doskey macro like discribed in this article but still the commands still run without any errors.
I think its something else.
When you install python on windows it usually comes with the python launcher. This provides a way to easily access all the python versions installed on your computer.
The python launcher uses the py command which access the default python version.
py -0p will show you all the installed versions.
See https://www.infoworld.com/article/3617292/how-to-use-pythons-py-launcher-for-windows.html for more details.
For the python command to work then the relevant directory containing python.exe needs to be added to your user PATH variable.
As has been said looks the the python directory is not on your PATH, but the python launcher is and finds the installed python.exe.
If you want python to work on command line then you'll need to add it to your PATH variable. https://realpython.com/add-python-to-path/#how-to-add-python-to-path-on-windows
I am doing this project where i need to install a package called Twint.
I want to install this package and use it's commands in my VS Code.
What happends when i for example type this in my Windows CMD?
pip3 install --user --upgrade git+https://github.com/twintproject/twint.git#origin/master#egg=twint
Because i can't type this in my VS code terminal, where i usually install packages with pip.
It will return an error that says ERROR: Cannot find command 'git' - do you have 'git' installed and in your PATH?''
Now if i run this in my Windows Command it seems that i can't directly import the package in VS code?
Can anyone help me out with this confusion, where does the files get stored and how do i create good habbits around installing packages?
Hope someone understands what im struggeling with here.
Best
It is often the case that computers have more than one version of python installed and that editors like VS code use a different version than pip uses on the command line. pip installs packages where the version of python it is linked to expects them to be, but VScode doesn't know to look there.
It sounds like you have git installed where pip installs things, so you can upgrade from the command line without issue, but there's no installation of git where VScode is looking, so there's nothing to upgrade.
You either need to find where pip installs things and add it to the $PATH VScode uses, or try running a variation of python -m pip install --user git (specifying a specific url, or other things, as needed) from within VScode, which will ensure the package gets installed in a place that VScode looks for packages.
Download and Install git in your windows from here:
https://git-scm.com/download/win
Then add its installation bin path to your windows's environment path. Then you will find the git command at the command prompt globally.
This may solve you problem.
I am trying to install Pip as described here
When I run py get-pip.py I get the following error:
ERROR: pipenv 2018.11.26 requires virtualenv, which is not installed.
And if then i try to run pip -v, it says command not found
I dont know what could be the problem here. I ran the command in command prompt.
Edit: I also tried running command prompt in administrator mode. I am using py synonim for Windows 10
The link you provided says to use python get-pip.py instead of py get-pip.py. Maybe you can try this out.
Try typing this if you have single python version installed installed:
sudo apt install python*-pip
Here * can be either omitted or replaced by python version. Or if you think that you have pip, but it doesn't appear try running it as your current python module:
python* -m pip
As well as above, the * can be either omitted or replaced by python version
did you check if python is in your PATH environment ?
Python 3.8 Installation
and Did you check if you run it in the powershell?
pip Install in Windows 10 with Powershell
check your installation, I made it with a virtual machine.
I newly installed python 2.7.10 which came with pre installed pip python installer.
I'm unable to install any python modules using pip in python
I tries installing through CMD in widows
For example if i'm trying to install twilio using CMD prompt
C:python27>pip install twilio
Cmd Prompt is not giving any errors and it's not proceeding after i used pip install !I tried uninstalling python and installed again but again it's same
Error while installing from python terminal
Commond prompt error
You have to use pip in a terminal, but not in the Python shell. It is a bash command, not Python syntax. In other words, use pip before you type "python".
You have misspelled the module name (use "twilio", instead of "twillio"). And off course you should do it in the command prompt and not in python shell...
;)
Try this:
c:\>
pip install twilio
I too had the same problem
Add the following to the environment path in windows:
"C:>python27\scripts;" (Please paste without the quotes)
This helped me in solving my problem !
I have using Python 3.4 in my machine . I have installed the same machine Python 2.7 and do what necessary in Environment Path . In Python34 folder I have changed python.exe to python3.exe . I can use Python2.7 using python command and Python3.4 using python3 command.But there was an error usin pip :
Fatal error in launcher: Unable to create process using '"C:\Python3.4\python.exe" "C:\Python3.4\Scripts\pip.exe" install'
As you see pip still using python.exe . How can I solve this ?
I'll try to be as clear as I can here, the answer you've linked to in the comments above is specifically asking about being able to run multiple versions of python on the same machine, and being able to specify which version is used to run a script from the command line.
when python 3 is installed two executables are added to c:\Windows\ called py.exe and pyw.exe these are used by default when a python script is invoked by double clicking on it in explorer.
if no other command line arguments are set then these executables look inside the script for the shebang line which looks like #!python2 or #!python3.3 and direct the py (or pyw) executable to use that version of python to run the script, note that this could just be #!python which would use the first version found on the system (oldest first) also note that only 2 significant digits can be used (so you couldn't use #!python3.3.4). If no shebang line is found, the first version of python found will be used.
to use a specific version of python from the command line you would then have a couple of options, firstly you could specify the entire path to the python version you want, e.g. C:\Python33\python.exe scriptname.py or you can use flags.
To use a flag you would call py -3.3 scriptname.py which would call the python 3.3 interpreter and pass it the script as an argument for you.
this prevents you needing to mess about with executable names, by messing with the executable names you are breaking your own pip installation. in short there is no reason you should ever need to rename them.
I have the same error when I install python2.7 and python3.6 in my Window7.
After I rename my python.exe, there was an error using pip.
If your pip is the last version,you have to reinstall your pip use the command python3 -m pip install --upgrade --force-reinstall pip.
If your pip is not the last verison ,you can just upgrade your pip with the command python3 -m pip install --upgrade pip.
NOTE. When you install pip for your python2, you hava to change the command as python2 -m pip install --upgrade --force-reinstall pip.
Hope it works for you~