ROS can't find numpy
Hello,
I was trying to launch the turtlebot3world.launch file from turtlebot3gazebo package, but it outputs the following:
started roslaunch server http://marco-TP51:42481/
SUMMARY
========
PARAMETERS
* /gazebo/enable_ros_network: True
* /robot_description: <?xml version="1....
* /rosdistro: melodic
* /rosversion: 1.14.3
* /use_sim_time: True
NODES
/
gazebo (gazebo_ros/gzserver)
gazebo_gui (gazebo_ros/gzclient)
spawn_urdf (gazebo_ros/spawn_model)
auto-starting new master
process[master]: started with pid [16336]
ROS_MASTER_URI=http://localhost:11311
setting /run_id to 86828436-6078-11e9-9932-aced5c629b57
process[rosout-1]: started with pid [16348]
started core service [/rosout]
process[gazebo-2]: started with pid [16351]
process[gazebo_gui-3]: started with pid [16359]
process[spawn_urdf-4]: started with pid [16365]
[ INFO] [1555440639.459944750]: Finished loading Gazebo ROS API Plugin.
[ INFO] [1555440639.460939990]: waitForService: Service [/gazebo/set_physics_properties] has not been advertised, waiting...
[ INFO] [1555440639.508931990]: Finished loading Gazebo ROS API Plugin.
[ INFO] [1555440639.510168849]: waitForService: Service [/gazebo_gui/set_physics_properties] has not been advertised, waiting...
Traceback (most recent call last):
File "/opt/ros/melodic/lib/gazebo_ros/spawn_model", line 31, in <module>
from tf.transformations import quaternion_from_euler
File "/opt/ros/melodic/lib/python2.7/dist-packages/tf/__init__.py", line 31, in <module>
from .listener import Transformer, TransformListener, TransformerROS
File "/opt/ros/melodic/lib/python2.7/dist-packages/tf/listener.py", line 29, in <module>
import numpy
ImportError: No module named numpy
[spawn_urdf-4] process has died [pid 16365, exit code 1, cmd /opt/ros/melodic/lib/gazebo_ros/spawn_model -urdf -model turtlebot3_burger -x -2.0 -y -0.5 -z 0.0 -param robot_description __name:=spawn_urdf __log:=/home/marco/.ros/log/86828436-6078-11e9-9932-aced5c629b57/spawn_urdf-4.log].
log file: /home/marco/.ros/log/86828436-6078-11e9-9932-aced5c629b57/spawn_urdf-4*.log
[ INFO] [1555440640.992841491, 0.022000000]: waitForService: Service [/gazebo/set_physics_properties] is now available.
[ INFO] [1555440641.029005943, 0.056000000]: Physics dynamic reconfigure ready.
[Err] [REST.cc:205] Error in REST request
libcurl: (51) SSL: no alternative certificate subject name matches target host name 'api.ignitionfuel.org'
It's clear to me that ROS has trouble finding numpy.
However, I had installed numpy minutes earlier, by doing sudo apt-get install python-numpy. Sure enough, if I do apt search python-numpy it says it's installed:
Sorting... Done
Full Text Search... Done
python-numpy/bionic,now 1:1.13.3-2ubuntu1 amd64 [installed]
Numerical Python adds a fast array facility to the Python language
Then, I tried opening a python terminal and typing help("modules"). The result for that is:
Python 2.7.15rc1 (default, Nov 12 2018, 14:31:15)
[GCC 7.3.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> help("modules")
Please wait a moment while I gather a list of all available modules...
ImportError: numpy.core.multiarray failed to import
ImportError: numpy.core.multiarray failed to import
registered capabilities (classes):
- rosbridge_library.capabilities.call_service.CallService
- rosbridge_library.capabilities.advertise.Advertise
- rosbridge_library.capabilities.publish.Publish
- rosbridge_library.capabilities.subscribe.Subscribe
- <class 'rosbridge_library.capabilities.defragmentation.Defragment'>
- rosbridge_library.capabilities.advertise_service.AdvertiseService
- rosbridge_library.capabilities.service_response.ServiceResponse
- rosbridge_library.capabilities.unadvertise_service.UnadvertiseService
/usr/lib/python2.7/dist-packages/IPython/kernel/__init__.py:13: ShimWarning: The `IPython.kernel` package has been deprecated since IPython 4.0.You should import from ipykernel or jupyter_client instead.
"You should import from ipykernel or jupyter_client instead.", ShimWarning)
No handlers could be found for logger "OpenGL.Tk"
INFO:root:Generating grammar tables from /usr/lib/python2.7/lib2to3/Grammar.txt
INFO:root:Generating grammar tables from /usr/lib/python2.7/lib2to3/PatternGrammar.txt
BaseHTTPServer concurrent mmap rqt_tf_tree
Bastion configobj mock rqt_top
CDROM configparser modulefinder rqt_topic
CGIHTTPServer constantly move_base rqt_web
Canvas contextlib move_base_msgs rtabmap_ros
ConfigParser control_msgs mpi4py runpy
Cookie control_toolbox mpl_toolkits rviz
Crypto controller_manager mpmath scandir
Cython controller_manager_msgs multifile sched
DLFCN cookielib multiprocessing scipy
Dialog copy mutex secretstorage
DocXMLRPCServer copy_reg nacl select
FileDialog copyreg nav_msgs sensor_msgs
FixTk costmap_2d navfn serial
HTMLParser crypt netifaces service_identity
IN cryptography netrc sets
IPython csv new setuptools
MimeWriter ctypes nis sgmllib
OpenGL curses nntplib sha
OpenSSL cv2 nodelet shape_msgs
PAM cv_bridge nodelet_topic_tools shelve
PIL cvxopt nose shlex
PyKDL cwiid ntpath shutil
PyQt4 cycler nturl2path signal
PyQt5 cython numbers simplegeneric
Queue datetime numexpr simplejson
ScrolledText dateutil oauth singledispatch
SimpleDialog dbhash octomap_msgs singledispatch_helpers
SimpleHTTPServer dbm olefile sip
SimpleXMLRPCServer dbus opcode sipconfig
SocketServer decimal opencv_apps sipconfig_nd
StringIO decorator openpyxl sipdistutils
TYPES defusedxml operator site
Tix diagnostic_analysis optparse sitecustomize
Tkconstants diagnostic_common_diagnostics os six
Tkdnd diagnostic_msgs os2emxpath smach
Tkinter diagnostic_updater ossaudiodev smach_msgs
UserDict diff_drive_controller pandas smach_ros
UserList difflib pango smclib
UserString dircache pangocairo smtpd
_LWPCookieJar dis paramiko smtplib
_MozillaCookieJar distutils parser snappy
__builtin__ doctest past sndhdr
__future__ docutils pathlib2 socket
_abcoll dot_parser patsy socketserver
_ast dsextras pbr spwd
_bisect dumbdbm pcl_msgs sqlite3
_bsddb dummy_thread pcl_ros sre
_cffi_backend dummy_threading pdb sre_compile
_codecs dwa_local_planner pexpect sre_constants
_codecs_cn dynamic_reconfigure pickle sre_parse
_codecs_hk easy_install pickleshare ssl
_codecs_iso2022 em pickletools stat
_codecs_jp email pipes statsmodels
_codecs_kr encodings pkg_resources statvfs
_codecs_tw ensurepip pkgutil std_msgs
_collections enum platform std_srvs
_csv errno plistlib stereo_image_proc
_ctypes et_xmlfile pluggy stereo_msgs
_ctypes_test exceptions polled_camera string
_curses fcntl popen2 stringold
_curses_panel filecmp poplib stringprep
_dbus_bindings fileinput posix strop
_dbus_glib_bindings find_object_2d posixfile struct
_dummy_thread fnmatch posixpath subprocess
_elementtree formatter pprint subprocess32
_functools fpformat profile sunau
_hashlib fractions prompt_toolkit sunaudio
_heapq ftplib pstats symbol
_hotshot funcsigs psutil sympy
_io functools pty symtable
_json future ptyprocess sys
_locale future_builtins pwd sysconfig
_lsprof gazebo_msgs py syslog
_markupbase gazebo_plugins py_compile tables
_md5 gazebo_ros pyasn1 tabnanny
_multibytecodec gc pyasn1_modules talloc
_multiprocessing gencpp pyclbr tarfile
_osx_support genericpath pydoc telnetlib
_posixsubprocess geneus pydoc_data tempfile
_pyio genlisp pydot termios
_pytest genmsg pyexpat test
_random gennodejs pyglet test_trie
_scandir genpy pygments textwrap
_sha geographic_msgs pygtk tf
_sha256 geometry_msgs pygtkcompat tf2_geometry_msgs
_sha512 getopt pylab tf2_kdl
_snappy getpass pyparsing tf2_msgs
_socket gettext pytest tf2_py
_sqlite3 gi python_qt_binding tf2_ros
_sre gio pytrie tf_conversions
_ssl glib pytz theora_image_transport
_strptime glob pyximport this
_struct global_planner qrcode thread
_symtable gmpy qt_dotgraph threading
_sysconfigdata gnupg qt_gui time
_sysconfigdata_nd gobject qt_gui_cpp timeit
_testcapi grp qt_gui_py_common tkColorChooser
_thread gtk queue tkCommonDialog
_threading_local gtkunixprint quopri tkFileDialog
_tkinter gzip random tkFont
_version hashlib re tkMessageBox
_warnings heapq readline tkSimpleDialog
_weakref hgdemandimport realsense2_camera tkinter
_weakrefset hgext repr toaiff
_yaml hgext3rd reprlib token
abc hmac resource tokenize
actionlib hotshot resource_retriever topic_tools
actionlib_msgs html rexec tornado
actionlib_tutorials html5lib rfc822 trace
aifc htmlentitydefs rlcompleter traceback
amcl htmllib robot_localization traitlets
angles http robotparser trajectory_msgs
antigravity httplib roman trollius
antlr httplib2 ros ttk
anydbm hyperlink rosapi tty
ar_track_alvar_msgs idna rosauth turtle
argparse ihooks rosbag turtle_actionlib
array image_geometry rosboost_cfg turtlebot3_example
asn1crypto image_proc rosbridge_library turtlebot3_msgs
ast image_publisher rosbridge_server turtlebot3_teleop
asynchat image_rotate rosclean turtlesim
asyncore image_view roscpp twisted
atexit imaplib roscpp_tutorials txaio
atk imghdr roscreate types
attr imp rosdep2 ubjson
audiodev importlib rosdistro umsgpack
audioop imputil rosgraph unicodedata
autobahn incremental rosgraph_msgs unittest
automat inspect rosinstall urdf_parser_py
backports interactive_markers rosinstall_generator urllib
backports_abc io roslaunch urllib2
base64 ipaddress roslib urlparse
base_local_planner ipython_genutils roslint user
bdb itertools roslz4 uu
binascii jdcal rosmake uuid
binhex joblib rosmaster uuid_msgs
bisect json rosmsg validate
bluetooth kdl_parser_py rosnode vcstools
bond keyring rosparam visualization_msgs
bondpy keyrings rospkg vtk
boost keyword rospy wadllib
bs4 kobuki_msgs rospy_tutorials warnings
bsddb kobuki_testsuite rosserial_msgs wave
bson laser_assembler rosserial_python wcwidth
builtins laser_geometry rosservice weakref
bz2 launchpadlib rostest webbrowser
bzrlib lazr rostopic webencodings
cPickle lib2to3 rosunit whichdb
cProfile libfuturize roswtf wiimote
cStringIO libpasteurize rqt_action winreg
cairo linecache rqt_bag wsaccel
calendar linuxaudiodev rqt_bag_plugins wsgiref
camera_calibration local_planner_limits rqt_console wstool
camera_calibration_parsers locale rqt_dep wx
catkin logging rqt_graph wxversion
catkin_pkg lsb_release rqt_gui xacro
cbor lxml rqt_gui_py xdrlib
cgi lz4 rqt_launch xlrd
cgitb macpath rqt_logger_level xlwt
chardet macurl2path rqt_moveit xml
chunk mailbox rqt_msg xmllib
click mailcap rqt_nav_view xmlrpc
cmath map_msgs rqt_plot xmlrpclib
cmd markupbase rqt_pose_view xxsubtype
code marshal rqt_publisher yaml
codecs marvelmind_nav rqt_py_common yocs_ar_pair_approach
codeop math rqt_py_console yocs_cmd_vel_mux
collections matplotlib rqt_reconfigure yocs_localization_manager
colorama md5 rqt_robot_dashboard yocs_msgs
colorsys mercurial rqt_robot_monitor yocs_navigator
commands message_filters rqt_robot_steering yocs_velocity_smoother
compileall mhlib rqt_runtime_monitor zipfile
compiler mimetools rqt_service_caller zipimport
compressed_depth_image_transport mimetypes rqt_shell zlib
compressed_image_transport mimify rqt_srv zope
Enter any module name to get more help. Or, type "modules spam" to search
for modules whose descriptions contain the word "spam".
>>> import numpy
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named numpy
>>>
KeyboardInterrupt
>>>
/usr/lib/python2.7/dist-packages/psutil/tests/__init__.py:1130: UserWarning: couldn't terminate process psutil.Process(pid=18076, name='orted', started='20:54:21'); attempting kill()
warnings.warn(msg, UserWarning)
Numpy is not listed here, and there are even some errors. What gives? I feel like I messed up something with my python paths or whatever but I don't even know what, let alone how to fix it. Help?
Asked by 1fabrism on 2019-04-16 14:13:30 UTC
Answers
Well I seem to have fixed this by typing sudo apt-get --reinstall install python-numpy into a terminal. I don't know if this is just a band-aid over my messed up python installation but oh well.
Also, that other error I got when launching gazebo
[Err] [REST.cc:205] Error in REST request
libcurl: (51) SSL: no alternative certificate subject name matches target host name 'api.ignitionfuel.org'
can be fixed by changing the url line in ~/.ignition/fuel/config.yaml to https://api.ignitionrobotics.org
Asked by 1fabrism on 2019-04-16 15:02:48 UTC
Comments
pedantic, but: python is having trouble loading the
numpymodule. ROS does not load or find anything here.Asked by gvdhoorn on 2019-04-17 03:39:10 UTC