I am having a big headache dealing with python versions. I couldn't do pip install xlwt because it was complaining to me about SSL certification problem. So then I installed python 2.7.16 and installed xlwt and got Requirement already satisfied: xlwt in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages (1.3.0)
However then when I run python code.py I keep getting ImportError: No module named xlwt although I just did pip install xlwt
what should I do?
The safest way to make sure your pip refers to the correct python version is to call it explicitly from the python version you intend to use, e.g.
/usr/bin/python2.7 -m pip install some-package
If it complains that the pip module is missing, you can install it via:
wget https://bootstrap.pypa.io/get-pip.py
/usr/bin/python2.7 get-pip.py
You can replace /usr/bin/python2.7 with whatever version you want to use.
Related
I am using a MacOS 10.15 and Python version 3.7.7
I wanted to upgrade pip so I ran pip install --upgrade pip, but it turns out my pip was gone (it shows ImportError: No module named pip when I want to use pip install ...)
I tried several methods like python3 -m ensurepip, but it returns
Looking in links: /var/folders/sc/f0txnv0j71l2mvss7psclh_h0000gn/T/tmpchwk90o3
Requirement already satisfied: setuptools in ./anaconda3/lib/python3.7/site-packages (49.6.0.post20200814)
Requirement already satisfied: pip in ./anaconda3/lib/python3.7/site-packages (20.2.2)
and pip install still does not work and returns the same error message.
I also tried easy_install pip and other methods but pip still does not work.
Can anyone help me with this?
Update:
Using the method from #cshelly, it works on my computer!
Try the following:
python3 -m pip --upgrade pip
The -m flag will run a library module as a script.
The pip used by python3 is called pip3. Since you're using python3, you want to do pip3 install --upgrade pip.
Since it says no module named pip, thus pip is not installed in your system
So you may try
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
to download pip directly then you can use execute it using -
python3 get-pip.py
For details you may refer - https://www.geeksforgeeks.org/how-to-install-pip-in-macos/
PS: You may need to use sudo to make use of administrative privileges.
I'm using Kali Linux and have Python2.7 and Python3 running side-by-side.
I'm trying to install the pyasn1 module in my python2.7 path but when I type
pip install pyasn1
it says it's already installed in my python3 path
Requirement already satisfied: pyasn1 in /usr/lib/python3/dist-packages (0.4.8)
How do I install the pyasn1 module under my python2.7 path using pip?
Thanks!
So, it turns out I'm an idiot and the 'pip' command was linked to python3.
To run pip for python2, I installed pip2 which is apparently used specifically to install modules for python2
Here are the commands I used in case any other n0obs run into this issue:
wget https://bootstrap.pypa.io/pip/2.7/get-pip.py
python2 get-pip.py
pip2 install pyasn1
Edit:
So now which pip, which python and which python3 have started working correctly somehow. I was also able to install libraries using pip. The only remaining problem is that of the apt_pkg. Running apt-get install python-apt gives:
Reading package lists... Done
Building dependency tree
Reading state information... Done
python-apt is already the newest version (1.6.3ubuntu1).
Running any python application still gives error: ImportError: No module named apt_pkg
Running echo $PATH returns:
/home/hamza/bin:/home/hamza/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
Running find /usr -name python -o -name python3 returns:
/usr/local/lib/python3.5/dist-packages/notebook/static/components/codemirror/mode/python
/usr/local/lib/python2.7/dist-packages/notebook/static/components/codemirror/mode/python
/usr/lib/python3
/usr/lib/gimp/2.0/python
/usr/lib/libreoffice/share/Scripts/python
/usr/lib/virtualbox/sdk/bindings/xpcom/python
/usr/lib/wx/python
/usr/bin/python
/usr/bin/python3
/usr/share/code/resources/app/extensions/python
/usr/share/bash-completion/helpers/python
/usr/share/bash-completion/completions/python
/usr/share/bash-completion/completions/python3
/usr/share/python
/usr/share/javascript/codemirror/mode/python
/usr/share/python3
/usr/share/lintian/overrides/python
/usr/share/lintian/overrides/python3
/usr/share/gcc-8/python
/usr/share/gdb/python
/usr/share/librevenge/python
/usr/share/doc/python
/usr/share/doc/python3
/usr/share/doc/python-statsmodels/examples/python
/usr/share/playonlinux/python
Original:
Python on my system is a wreck. I have got multiple versions installed. None work properly. Apparently some applications using python are not working either (eg: Unity Tweaks). My python libraries will not install because pip doesn't work, although it says it is already installed
I was trying to install some libraries for python on my system using pip. Turned out pip was not working. I tried to reinstall pip only to learn that pip was already installed. I went through a process of understanding the difference between python and python3. I have tried enough things and have basically lost track of the things I have done to get the libraries installed. Long story short, pip does not work no matter what, my libraries will not install and consequently my code doesn't run.
Here is some of the things I have already done:
which pip
This return no output
apt-get install python-pip
Says I have pip already installed
apt-get install python-apt
To resolve ImportError: No module named apt_pkg. It says:
Reading package lists... Done
Building dependency tree
Reading state information... Done
python-apt is already the newest version (1.6.3ubuntu1).
But the error persists
And countless other stuff I do not remember.
What I want now is simple. I wish to somehow get out of this hassle by resetting all of my python settings and installation to default, and then install the pandas and numpy libraries for my system. Any and all help would be appreciated.
Result for python -m pip -V:
pip 9.0.1 from /usr/lib/python2.7/dist-packages (python 2.7)
Result for python3 -m pip -V:
pip 9.0.1 from /usr/lib/python3/dist-packages (python 3.5)
One of the following commands worked for me:
pip3 install -U pip
python -m pip install -U pip
python3 -m pip install -U pip
Make sure the version of your python3 is 3.6, which is the default version of ubuntu18, then upgrade pip.
export py3_path=`which python3`
rm $py3_path
ln -s `which python3.6` $py3_path
python3 -m pip install -U pip
Or use pyenv to manage multi versions https://github.com/pyenv/pyenv
I am trying to install the xlrd module on my Mac, however when I open IDLE and import the xlrd module, I get the error:
Input Error: No module named xlrd
To install it, I used in my home directory...
sudo pip install xlrd
... and it is installed successfully.
Note that I have both Python 2.7 and Python 3.4.0 on my computer, in case this is what is causing problems. I want it installed for Python 3.4.0.
To avoid conflicts between parallel Python 2 and Python 3
installations, only the versioned pip3 and pip3.4 commands are
bootstrapped by default
You can try sudo pip3 install xlrd or sudo pip3.4 install xlrd to use the Python 3.4, see docs here https://docs.python.org/3/whatsnew/3.4.html#bootstrapping-pip-by-default
I followed these instructions http://www.nltk.org/install.html to install nltk module on my mac (10.6)
I have installed python 2.7, but when I open IDLE and type import nltk it gives me this error
Traceback (most recent call last):
File "<pyshell#0>", line 1, in <module>
import nltk
ImportError: No module named nltk
The problem is the module is installed in another python version, 2.6. How can I install the package in python version 2.7? I tried some of the solutions suggested in various answers, for example I tried typing this in the terminal
export PYTHONPATH=$PYTHONPATH:/usr/local/lib/python2.7/site-packages
and then installed NLTK again with the command
sudo pip install -U nltk
but I get the message: Requirement already up-to-date in /Library/Python/2.6/. So apparently the command line export PYTHONPATH didn't do anything (it still tries to install the package in 2.6) OR (more likely) I didn't understand the meaning/functioning of that command line. What am I doing wrong?
On OS X you could have multiple installation of Python, so investigate it first:
$ which python python2 python3
/usr/bin/python
/usr/local/bin/python3
$ which pip pip2 pip3
/usr/local/bin/pip
/usr/local/bin/pip2
/usr/local/bin/pip3
All within /usr/bin are built-in and all other in /usr/local/bin are external installed by Homebrew or some other package manager.
If you're using pip or pip3 from /usr/local, then you've to use the same Python instance, otherwise they're different instances.
Just install it via pip:
pip install nltk
or for Python 3:
pip3 install nltk
then run the right Python instance from /usr/local/bin or update your PATH system variable.
Make sure you install the actual Python for Mac, not the one built into the console. Then, install pip by executing this script. Then skip to part 3 of the instructions and go from there.
Try this
pip install --user -U nltk
On my mac I had two different versions of Python 3 installed: Python 3.6 and Python 3.7. I had installed nltk having Python 3.7 in my $PATH:
$ pip3 install nltk
$ which python3
/Library/Frameworks/Python.framework/Versions/3.7/bin/python3
$ echo $PATH
/Library/Frameworks/Python.framework/Versions/3.7/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
But nltk was missing for Python 3.6. Solution: install nltk also for version 3.6.
$ echo $PATH
/Library/Frameworks/Python.framework/Versions/3.6/bin:/Library/Frameworks/Python.framework/Versions/3.7/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
$ pip3 install nltk
Collecting nltk
Using cached https://files.pythonhosted.org/packages/6f/ed/9c755d357d33bc1931e157f537721efb5b88d2c583fe593cc09603076cc3/nltk-3.4.zip
Requirement already satisfied: six in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from nltk) (1.12.0)
Collecting singledispatch (from nltk)
Using cached https://files.pythonhosted.org/packages/c5/10/369f50bcd4621b263927b0a1519987a04383d4a98fb10438042ad410cf88/singledispatch-3.4.0.3-py2.py3-none-any.whl
Installing collected packages: singledispatch, nltk
Running setup.py install for nltk ... done
Successfully installed nltk-3.4 singledispatch-3.4.0.3
I would use a virtualenv, but if you really want to use it from the terminal, I'd recommend adding your export statement to ~/.bashrc
Just restart Jupyter Notebook or anything you are using after installing...
It works...
In my case, the following command worked for me. Try this!!
py -3 -m pip install nltk
I had a similar issue an an Intel MacBook.
Fixed with
Make sure the python bin directory in the path
mine is /Users/<user>/Library/Python/3.9/bin
Restart the computer
NOTE that just restarting the terminal did NOT help