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SoMa-Project / ec_grasp_planner

Grasp Planner Based on Environmental Constraint Exploitation
BSD 3-Clause "New" or "Revised" License
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Problem with first example: No module named sip #62

Open ninafiona opened 3 years ago

ninafiona commented 3 years ago

Ubuntu 18.04, ros melodic, Python 2.7

I tried the first example, but received an error (see below) when running the command rosrun ec_grasp_planner planner.py --rviz --robot_base_frame camera_rgb_optical_frame

Traceback (most recent call last):
  File ".../ec_grasp_planner/ec_grasp_planner/src/planner.py", line 61, in <module>
    import tf_conversions.posemath as pm
  File "/opt/ros/melodic/lib/python2.7/dist-packages/tf_conversions/__init__.py", line 30, in <module>
    from .posemath import *
  File "/opt/ros/melodic/lib/python2.7/dist-packages/tf_conversions/posemath.py", line 34, in <module>
    from PyKDL import *
ImportError: No module named sip

Update: It seems to be this problem: https://github.com/orocos/orocos_kinematics_dynamics/issues/287 I removed all ros packages that are dependend on orocos_kinematics_dynamics and installed orocos_kinematics_dynamics from source and the import of PyKDL succeeded. With the ros packages installed (maybe with a different version of KDL) there is the error 'No module named sip' when importing PyKDL.

I also posted this issue here:

zweistein commented 3 years ago

this happens on TAG ms4.5 but not on MS4b_Elod

ninafiona commented 3 years ago

Update: I commented out the import of tf_conversions and rewrote the functions to work without KDL. Not tested yet due to an error with another package, but I guess it should work with this workaround.