omrirz / pyrosenv Goto Github PK

Thank you for this awesome package. It does not seem like cv_bridge works with pyrosenv.

I am importing it as from pyrosenv.cv_bridge import CvBridge and receiving an error saying: ModuleNotFoundError: No module named 'pyrosenv.cv_bridge'. It is possible I am just not importing it correctly.

If this has not yet been implemented, are there any plans to? I am sure there are others that would like to see support for cv_bridge too.

Thanks!

@omrirz Thanks for adding cv_bridge to your package! Since your code is meant to be run with Python 3, I am running into an issue with using cv_bridge. Here is the error that I am receiving:

    frame_0 = bridge.imgmsg_to_cv2(msg, desired_encoding = "passthrough") # Save off frame as cv_image
  File "visualize_img.py", line 67, in visualizeImage
    frame_0 = bridge.imgmsg_to_cv2(msg, desired_encoding = "passthrough") # Save off frame as cv_image
  File "/opt/ros/melodic/lib/python2.7/dist-packages/cv_bridge/core.py", line 163, in imgmsg_to_cv2
    dtype, n_channels = self.encoding_to_dtype_with_channels(img_msg.encoding)
  File "/opt/ros/melodic/lib/python2.7/dist-packages/cv_bridge/core.py", line 99, in encoding_to_dtype_with_channels
    return self.cvtype2_to_dtype_with_channels(self.encoding_to_cvtype2(encoding))
  File "/opt/ros/melodic/lib/python2.7/dist-packages/cv_bridge/core.py", line 91, in encoding_to_cvtype2
    from cv_bridge.boost.cv_bridge_boost import getCvType
ImportError: dynamic module does not define module export function (PyInit_cv_bridge_boost)

I'm unsure whether it is an issue on my end or with the package. I am pretty sure cv_bridge is just being built with python 2.7 instead of python 3 causing the issue. Let me know if you have any suggestions. Thanks again!

Great Idea to collect all ros dependencies! I'm having trouble finding the relevant packages for reading rosbags in python3 and this will hopefully solve it all.

"no module named rospy", "no module named std_msgs" is the problem, though no error in installation phase.
...
Installing collected packages: more-itertools, attrs, iniconfig, py, toml, pluggy, pyparsing, six, packaging, pytest, pyros-config, pyros-setup, psutil, gnupg, defusedxml, pycrypto, PyYAML, distro, docutils, python-dateutil, catkin-pkg, rospkg, pyrosenv
Successfully installed PyYAML-5.3.1 attrs-20.1.0 catkin-pkg-0.4.22 defusedxml-0.6.0 distro-1.5.0 docutils-0.16 gnupg-2.3.1 iniconfig-1.0.1 more-itertools-8.5.0 packaging-20.4 pluggy-0.13.1 psutil-5.7.2 py-1.9.0 pycrypto-2.6.1 pyparsing-2.4.7 pyros-config-0.2.1 pyros-setup-0.3.0 pyrosenv-0.0.4 pytest-6.0.1 python-dateutil-2.8.1 rospkg-1.2.8 six-1.15.0 toml-0.10.1
(baghandler) [pli@zenbook ~]$ python
Python 3.8.5 (default, Aug 12 2020, 00:00:00)
[GCC 10.2.1 20200723 (Red Hat 10.2.1-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.

import pyrosenv
Traceback (most recent call last):
File "/home/pli/baghandler/lib/python3.8/site-packages/pyrosenv/init.py", line 30, in
import rospy
ModuleNotFoundError: No module named 'rospy'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/pli/baghandler/lib/python3.8/site-packages/pyrosenv/init.py", line 42, in
import rospy
ModuleNotFoundError: No module named 'rospy'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "", line 1, in
File "/home/pli/baghandler/lib/python3.8/site-packages/pyrosenv/init.py", line 51, in
sys.modules['pyrosenv.std_msgs'] = std_msgs = importlib.import_module('std_msgs')
File "/home/pli/baghandler/lib64/python3.8/importlib/init.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
ModuleNotFoundError: No module named 'std_msgs'

following https://answers.ros.org/question/343260/install-of-the-rospyrosbag-python-libraries-standalone-not-on-ubuntu/
I could install the packages I needed.

I run "pip install pyparsing" and get: "Requirement already satisfied: pyparsing in c:\programdata\anaconda3\lib\site-packages (2.4.7)"
but when running python it failed, what can I do?