I am new to ROS and am trying to run a python script from the tutorials mentioned in ROS website(link below)
http://wiki.ros.org/ROS/Tutorials/ExaminingPublisherSubscriber
When I run the command: $ rosrun beginner_tutorials talker.py
This error pops up.
Traceback (most recent call last):
File "/home/tarapreeth/catkin_ws/src/beginner_tutorials/scripts/talker.py", line 39, in <module>
import rospy
File "/opt/ros/noetic/lib/python3/dist-packages/rospy/__init__.py", line 47, in <module>
from std_msgs.msg import Header
File "/opt/ros/noetic/lib/python3/dist-packages/std_msgs/msg/__init__.py", line 1, in <module>
from ._Bool import *
File "/opt/ros/noetic/lib/python3/dist-packages/std_msgs/msg/_Bool.py", line 6, in <module>
import genpy
File "/opt/ros/noetic/lib/python3/dist-packages/genpy/__init__.py", line 34, in <module>
from . message import Message, SerializationError, DeserializationError, MessageException, struct_I
File "/opt/ros/noetic/lib/python3/dist-packages/genpy/message.py", line 48, in <module>
import yaml
ImportError: No module named yaml
I tried installing yaml using:
pip install pyyaml
I get this: Requirement already satisfied: pyyaml in /usr/lib/python3/dist-packages (5.3.1).
Related
I'm working in python3 on Fedora 27 and I was trying to install the anaconda. After I run conda install conda yum and dnf are broken. Now I got the following error.
Traceback (most recent call last):
File "/usr/bin/dnf", line 57, in <module>
from dnf.cli import main
File "/usr/lib/python3.6/site-packages/dnf/cli/__init__.py", line 30, in <module>
from dnf.cli.cli import Cli # :api
File "/usr/lib/python3.6/site-packages/dnf/cli/cli.py", line 27, in <module>
from . import output
File "/usr/lib/python3.6/site-packages/dnf/cli/output.py", line 29, in <module>
import dnf.cli.progress
File "/usr/lib/python3.6/site-packages/dnf/cli/progress.py", line 19, in <module>
from dnf.cli.term import _term_width
File "/usr/lib/python3.6/site-packages/dnf/cli/term.py", line 21, in <module>
import curses
File "/usr/lib/python3.6/curses/__init__.py", line 13, in <module>
from _curses import *
ImportError: libncursesw.so.5: cannot open shared object file: No such file or directory
Can anyone help me?
I am trying to install spacy for windows, python 3.x.
I ran the following commands:-
conda install -c conda-forge spacy
python -m spacy download en
"python -m spacy download en" gives the error:-
Traceback (most recent call last):
File "D:\Anaconda3\lib\runpy.py", line 174, in _run_module_as_main
mod_name, mod_spec, code = _get_module_details(mod_name, _Error)
File "D:\Anaconda3\lib\runpy.py", line 133, in _get_module_details
return _get_module_details(pkg_main_name, error)
File "D:\Anaconda3\lib\runpy.py", line 109, in _get_module_details
__import__(pkg_name)
File "D:\Anaconda3\lib\site-packages\spacy\__init__.py", line 4, in <module>
from .cli.info import info as cli_info
File "D:\Anaconda3\lib\site-packages\spacy\cli\__init__.py", line 1, in <module>
from .download import download
File "D:\Anaconda3\lib\site-packages\spacy\cli\download.py", line 10, in <module>
from .link import link
File "D:\Anaconda3\lib\site-packages\spacy\cli\link.py", line 7, in <module>
from ..compat import symlink_to, path2str
File "D:\Anaconda3\lib\site-packages\spacy\compat.py", line 11, in <module>
from thinc.neural.util import copy_array
File "D:\Anaconda3\lib\site-packages\thinc\__init__.py", line 1, in <module>
from .about import *
ImportError: No module named 'thinc.about'
and the same error when I try to import spacy thereafter. What should I do to successfully install spacy?
I found this link from where I downloaded all of the required whls one by one to install spacy.
Compiling wheel rather than downloading ready one might be helpful as well:
python -m pip install thinc --no-binary=:all:
or
pip install thinc --no-binary=:all:
Don't forget to add --force option if you already have the package.
More information about --no-binary option:
https://pip.pypa.io/en/latest/cli/pip_install/#cmdoption-no-binary
I just installed anaconda with python 3 on my mac (macOS Sierra 10.12.2), and many packages give off errors when importing. It seems this has to do with the typing package, but I can't figure out what's going on.
If I do
python -c 'import sklearn'
(python being Python 3.5.2 :: Anaconda 4.2.0 (x86_64))
I get this error:
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/Users/geromepistre/anaconda3/lib/python3.5/site-packages/sklearn/__init__.py", line 57, in <module>
from .base import clone
File "/Users/geromepistre/anaconda3/lib/python3.5/site-packages/sklearn/base.py", line 6, in <module>
import copy
File "/Users/geromepistre/anaconda3/lib/python3.5/copy.py", line 51, in <module>
import types
File "/Users/geromepistre/types.py", line 1, in <module>
import typing
File "/Users/geromepistre/anaconda3/lib/python3.5/typing.py", line 4, in <module>
import contextlib
File "/Users/geromepistre/anaconda3/lib/python3.5/contextlib.py", line 5, in <module>
from functools import wraps
File "/Users/geromepistre/anaconda3/lib/python3.5/functools.py", line 22, in <module>
from types import MappingProxyType
ImportError: cannot import name 'MappingProxyType'
I tried to dig into the packages mentioned in the error, but it gets more confusing.
import types gives the same error, as well as import contextlib. But if I import contextlib first (and get an error), then import types gets me no error. And I get a brand new error on import sklearn:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Users/geromepistre/anaconda3/lib/python3.5/site-packages/sklearn/__init__.py", line 57, in <module>
from .base import clone
File "/Users/geromepistre/anaconda3/lib/python3.5/site-packages/sklearn/base.py", line 6, in <module>
import copy
File "/Users/geromepistre/anaconda3/lib/python3.5/copy.py", line 114, in <module>
types.BuiltinFunctionType, type(Ellipsis),
AttributeError: module 'types' has no attribute 'BuiltinFunctionType'
You appear to be running Python from your home directory, which according to the first traceback contains a file named types.py. Since the current directory (. in Unix/Linux parlance) is the first entry in sys.path, Anaconda searches for modules/files there before the standard lib or site-packages.
Try at all costs to avoid naming files for modules in either the standard lib or site-packages, for just this reason. Renaming your file types.py to my_types.py or something should solve the issue.
I can't run pip3 and easy_install3 after upgrade.
For example command pip3 -V crash with error:
Traceback (most recent call last):
File "/usr/bin/pip3", line 5, in <module>
from pkg_resources import load_entry_point
File "/usr/lib/python3.4/site-packages/pkg_resources/__init__.py", line 36, in <module>
import plistlib
File "/usr/lib64/python3.4/plistlib.py", line 65, in <module>
from xml.parsers.expat import ParserCreate
File "/usr/lib64/python3.4/xml/parsers/expat.py", line 4, in <module>
from pyexpat import *
ImportError: /usr/lib64/python3.4/lib-dynload/pyexpat.cpython-34m.so: undefined symbol: _PyTraceback_Add
I'm using openSUSE 42.1 Leap.
Help, please!
I've installed python 3.5 on mac os x (el capitan). I want to import pyshark module in python, but I get error.
I installed the pyshark requirement such as (logbook, lxml, trollies, py) but I couldn't import pyshark module.
pip3 list >>
syncio (3.4.3)
futures (3.0.3)
Logbook (0.12.3)
lxml (3.5.0)
pip (7.1.2)
py (1.4.30)
pyshark (0.3.6)
setuptools (18.2)
trollius (2.0)
Importing pyshark module error:
>>> import pyshark
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/pyshark/__init__.py", line 1, in <module>
from pyshark.capture.live_capture import LiveCapture
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/pyshark/capture/live_capture.py", line 1, in <module>
from pyshark.capture.capture import Capture
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/pyshark/capture/capture.py", line 6, in <module>
import trollius as asyncio
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/trollius/__init__.py", line 21, in <module>
from .base_events import *
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/trollius/base_events.py", line 39, in <module>
from . import coroutines
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/trollius/coroutines.py", line 15, in <module>
from . import futures
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/trollius/futures.py", line 116, in <module>
class Future(object):
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/trollius/futures.py", line 426, in Future
__await__ = __iter__ # make compatible with 'await' expression
NameError: name '__iter__' is not defined
Also importing trollies module has a error:
>>> import trollius
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/trollius/__init__.py", line 21, in <module>
from .base_events import *
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/trollius/base_events.py", line 39, in <module>
from . import coroutines
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/trollius/coroutines.py", line 15, in <module>
from . import futures
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/trollius/futures.py", line 116, in <module>
class Future(object):
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/trollius/futures.py", line 426, in Future
__await__ = __iter__ # make compatible with 'await' expression
NameError: name '__iter__' is not defined
Could any one help me out? I can't figure out what is the problem.
This is reported as a bug in https://github.com/haypo/trollius/issues/4
Until it is resolved you can temporalily resolve it by installing an unofficial development version from ludios by doing:
pip install -U git+https://github.com/ludios/trollius#f757a29815c2c9f5c3a691135ff758649fe84098#egg=trollius
Remember that this is a temporary and unofficial solution only. So hit the "subscribe" button on the issue page: https://github.com/haypo/trollius/issues/4 to subscribe to notifications. When the issue is officially resolved, use the official solution.