I am using Python 2.7.4. Works fine for web development and everything that doesn't require the use of specific packages.
But every time I am trying to install and use a new package, I get an error.
Example:
Cloned https://github.com/fatiherikli/worldcup
install worldcup was successful (python-dateutil, colorama, pytz, humanize)
But
$ worldcup today
Traceback (most recent call last):
File "/usr/local/bin/worldcup", line 8, in <module>
load_entry_point('worldcup==1.0.3', 'console_scripts', 'worldcup')()
File "/Library/Python/2.6/site-packages/worldcup.py", line 129, in main
print prettify(match)
File "/Library/Python/2.6/site-packages/worldcup.py", line 45, in prettify
seconds = diff.total_seconds()
AttributeError: 'datetime.timedelta' object has no attribute 'total_seconds'
My python version is 2.7 not 2.6:
$ python --version
Python 2.7.4
Any suggestion?
From the path names it appears you are running on a version of Mac OS X, which comes with multiple builtin versions of Python and you have likely installed a newer version of Python 2.7. Chances are you have installed a version of pip for your system Python 2.6 but not for the Python 2.7 that worldcup requires. You can easily check this by typing:
python2.7 -m pip install worldcup
If pip is not available for that instance of Python you'll need to install it by downloading get-pip.py and running it with python2.7.
Related
I setup a new Debian 10 (Buster) instance on AWS EC2, and was able to install a pip3 package that depended on netifaces, but when I came back to it the next day the package is breaking reporting an error in netifaces. If I try to run pip3 install netifaces I get the same error:
~$ pip3 install netifaces
Collecting netifaces
Using cached https://files.pythonhosted.org/packages/0d/18/fd6e9c71a35b67a73160ec80a49da63d1eed2d2055054cc2995714949132/netifaces-0.10.9.tar.gz
Complete output from command python setup.py egg_info:
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/usr/lib/python3/dist-packages/setuptools/__init__.py", line 20, in <module>
from setuptools.dist import Distribution, Feature
File "/usr/lib/python3/dist-packages/setuptools/dist.py", line 35, in <module>
from setuptools.depends import Require
File "/usr/lib/python3/dist-packages/setuptools/depends.py", line 7, in <module>
from .py33compat import Bytecode
File "/usr/lib/python3/dist-packages/setuptools/py33compat.py", line 55, in <module>
unescape = getattr(html, 'unescape', html_parser.HTMLParser().unescape)
AttributeError: 'HTMLParser' object has no attribute 'unescape'
HTMLParser().unescape was removed in Python 3.9. Compare the code in Python 3.8 vs Python 3.9.
The error seems to be a bug in setuptools. Try to upgrade setuptools. Or use Python 3.8.
I was facing this issue in PyCharm 2018. Apart from upgrading setuptools as mentioned above, I also had to upgrade to PyCharm 2020.3.4 to solve this issue. Related bug on PyCharm issue tracker: https://youtrack.jetbrains.com/issue/PY-39579
Hope this helps someone avoid spending hours trying to debug this.
I had python3.6 and related packages through deb management.
Needed python3.9 for side project and the solution to fix pip and AttributeError: 'HTMLParser' object has no attribute 'unescape'
was to update pip for python3.9 locally for one user:
python3.9 -m pip install --upgrade pip
now installing python3.9 version of the pip-packages work:
python3.9 -m pip install --target=~/.local/lib/python3.9/site-packages numpy
Downgrading to any older python3 version is not the solution and most of the time upgrading setuptools won't fix the issue. The proper solution that worked for me to work with pip using python3.9 is the following on Ubuntu18:
locate /usr/lib/python3/dist-packages/setuptools/py33compact.py33
and change
# unescape = getattr(html, 'unescape', html_parser.HTMLParser().unescape) # comment out this line
unescape = getattr(html, 'unescape', None)
if unescape is None:
# HTMLParser.unescape is deprecated since Python 3.4, and will be removed
# from 3.9.
unescape = html_parser.HTMLParser().unescape
I've just upgraded to Fedora 27, and have been unable to get psycopg2 working.
I'd very much appreciate any help anyone can provide.
As a simple test case, I've been executing
>>> import psycopg2
at the interactive shell. This works fine for Python 2.7, but fails for Python 3.x.
With Python 3.4 and 3.5, I get the message:
Traceback (most recent call last):
File "", line 1, in
ImportError: No module named 'psycopg2'
With Python 3.6, I see:
Traceback (most recent call last):
File "", line 1, in
File "/home/jazcap53/.local/lib/python3.6/site-packages/psycopg2/init.py", line 50, in
from psycopg2._psycopg import ( # noqa
ImportError: /home/jazcap53/.local/lib/python3.6/site-packages/psycopg2/.libs/libresolv-2-c4c53def.5.so: symbol __res_maybe_init, version GLIBC_PRIVATE not defined in file libc.so.6 with link time reference
I installed Fedora 27 from DVD-ROM. I find psycopg2 packages located at
/usr/lib64/python2.7/site-packages
and
/home/jazcap53/.local/lib/python3.6/site-packages
My Python packages were all either included with Fedora, or installed via dnf. They are:
python3-3.6.3-2.fc27.x86_64
python35-3.5.4-1.fc27.x86_64
python34-3.4.7-1.fc27.x86_64
python2-2.7.14-2.fc27.x86_64
Some packages I have installed that may be relevant are:
python2-devel-2.7.14-2.fc27.x86_64
python3-devel-3.6.3-2.fc27.x86_64
libpqxx-1:5.0.1-2.f27.x86_64
libpqxx-devel-1:5.0.1-2.f27.x86_64
libgcc-7.2.1-2.fc27.x86_64
postgresql-devel-9.6.6-1.fc27.x86_64
P.S.: If I'm asking this question in the wrong place, please direct me to the right place.
Edit:
I noticed that:
/usr/lib64/python2.7/site-packages/
contains subdirectories
psycopg2 and
psycopg2-2.7.3-py2.7.egg-info
but
/usr/lib64/python3.4/site-packages/ and
/usr/lib64/python3.5/site-packages/
contain nothing related to psycopg2
and
/usr/lib64/python3.6/site-packages/
contains subdirectory
psycopg2-2.7.3-py3.6.egg-info
but not psycopg2 itself
As you may have noticed, each version of Python has its own package hierarchy. So the installation on Python 3.6 will not give you access on 3.4 and 3.5.
With that said, there seems to be some problem with the system's standard lib with Python 3.6. One solution to that could be to install without binaries, like this:
python3.6 -m pip uninstall psycopg2
python3.6 -m pip install --no-binary :all: psycopg2
To install psycopg2 on 3.4 and 3.5 you would run these with or without the --no-binary option:
python3.4 -m pip install psycopg2
python3.5 -m pip install psycopg2
If you have automatic installs / docker install you need to ensure you add the following line to requirements.txt to ensure psycopg2 installs from source, rather than using the binary, or you'll continue to experience the above issue upon deployment.
psycopg2>=2.7,<2.8 --no-binary psycopg2
I am trying to install a software using pip install and my python and pip versions are 3.5. but when I run sudo pip install -e . I get the following error.
Traceback (most recent call last):
File "/usr/local/bin/pip3.5", line 5, in <module>
from pkg_resources import load_entry_point
File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.14-py2.7.egg/pkg_resources.py", line 2675, in <module>
parse_requirements(__requires__), Environment()
File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.14-py2.7.egg/pkg_resources.py", line 552, in resolve
raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: pip==8.1.0
Why Do I get an error with python 2.7 and please some one could sortout my issue.
Your pip version and python versions are separate. It looks like your package requires exactly pip 8.1.0. You have to either upgrade/downgrade to that version first, or modify the software to work with whichever pip you have available.
Also, it may be easier to install the software in a virtual environment rather than system/global one. Changing the system version of pip may break either current apps, or the future pip package updates.
I need to use CentOS 6.6 for a project which comes with Python 2.6 by default. When I install Swift it places the install inside /usr/lib/python2.6/site-packages/swiftclient/, so if I do a 'make altinstall' to install Python 2.7 or 3.3 it still runs with Python 2.6.
I read from other similar questions that trying to just install 2.7 or 3.3 on top of 2.6 will break yum.
The exception that occurs when running 'swift upload..' is:
Traceback (most recent call last):
File "/usr/bin/swift", line 7, in <module>
from swiftclient.shell import main
File "/usr/lib/python2.6/site-packages/swiftclient/__init__.py", line 20, in <module>
from .client import * # noqa
File "/usr/lib/python2.6/site-packages/swiftclient/client.py", line 136
return {key: safe_value(key, val) for (key, val) in headers}
^
SyntaxError: invalid syntax
Is there a way to install swift into the 2.7 directory? Is there some kind of environment variable I can change to point to Python2.7?
Thanks!
Obviously you can install swiftclient into python2.7 directory.
If you have installed python2.7 from sources with make altinstall you can then install pip2.7 and swiftclient
`
wget https://bootstrap.pypa.io/ez_setup.py
/usr/local/bin/python2.7 ez_setup.py
/usr/local/bin/easy_install-2.7 pip
/usr/local/bin/pip2.7 install swiftclient
The big deal though, is that you need to invoke explicitly python2.7 as the interpreter you want to use. Obviously you can set an env variable for it example export PYTHON27=/usr/local/bin/python2.7, but it has to be user/application specific and not system wide, 'cause as you already know, you will break yum dependencies.
Depending on which installation of Python I am using I have some problems to load a module. When I type
from quantecon import approx_markov
in the terminal using Python 3.4.0, the following error message is returned:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python3.4/dist-packages/quantecon/__init__.py", line 6,in <module>
from asset_pricing import AssetPrices
ImportError: No module named 'asset_pricing'
In the folder /usr/... as referred to above, I do however find a module called asset_pricing. (I have to admit that I additionally do not understand why the module asset_pricing interferes.)
I installed quantecon with:
pip3 install quantecon
I suspect that the problems are related to the Python version I am using. I also installed
pip install quantecon
and when I call the module approx_markov form the terminal, using Python 2.7.6 (I think this is the standard Python version of the OS I am using) I do not receive any error message. To solve the problem I already followed the instruction in the following discussion but to no avail Python3 has no acces to python2 modules (ubuntu).
The currently released version of quantecon is not Python 3 compatible; it uses relative imports and these are not supported anymore in Python 3.
The version in the source repository has been refactored and updated, and looks like it'll work with Python 3. You'll need to install that version instead:
pip3 install -U git+https://github.com/jstac/quant-econ.git
where -U tells pip3 to upgrade the package.
Note that there have been a lot of changes recently; use at your own risk. You could stick with Python 2 and wait for an official release.