Please solve my error.
sudo python image_converter.py
[sudo] password for omkar:
Traceback (most recent call last):
File "image_converter.py", line 4, in <module>
import roslib
ImportError: No module named roslib
The code I tried to run:
#!/usr/bin/env python
from __future__ import print_function
import roslib
roslib.load_manifest('my_package')
import sys
import rospy
import cv2
from std_msgs.msg import String
from sensor_msgs.msg import Image
from cv_bridge import CvBridge, CvBridgeError
class image_converter:
def __init__(self):
self.image_pub = rospy.Publisher("image_topic_2",Image)
self.bridge = CvBridge()
self.image_sub = rospy.Subscriber("image_topic",Image,self.callback)
def callback(self,data):
try:
cv_image = self.bridge.imgmsg_to_cv2(data, "bgr8")
except CvBridgeError as e:
print(e)
(rows,cols,channels) = cv_image.shape
if cols > 60 and rows > 60 :
cv2.circle(cv_image, (50,50), 10, 255)
cv2.imshow("Image window", cv_image)
cv2.waitKey(3)
try:
self.image_pub.publish(self.bridge.cv2_to_imgmsg(cv_image, "bgr8"))
except CvBridgeError as e:
print(e)
def main(args):
ic = image_converter()
rospy.init_node('image_converter', anonymous=True)
try:
rospy.spin()
except KeyboardInterrupt:
print("Shutting down")
cv2.destroyAllWindows()
if __name__ == '__main__':
main(sys.argv)
Why are you running a simple Python script as
root?@gvdhoorn asks a very good question, and points out a very likely cause to the issue you're experiencing. Also note, this first two "ROS" lines (
import roslibandroslib.load_manifest) have not been needed for quite some time. Likely you are using an out-of-date example to build this script off of.ossome@ubuntu:~/catkin_ws/src/beginner_tutorials/script$ python image_converter.py Traceback (most recent call last): File "image_converter.py", line 4, in <module> roslib.load_manifest('my_package') File "/opt/ros/kinetic/lib/python2.7/dist-packages/roslib/launcher.py", line 62, in load_manifest sys.path = _generate_python_path(package_name, _rospack) + sys.path File "/opt/ros/kinetic/lib/python2.7/dist-packages/roslib/launcher.py", line 93, in _generate_python_path m = rospack.get_manifest(pkg) File "/usr/lib/python2.7/dist-packages/rospkg/rospack.py", line 167, in get_manifest return self._load_manifest(name) File "/usr/lib/python2.7/dist-packages/rospkg/rospack.py", line 211, in _load_manifest retval = self._manifests[name] = parse_manifest_file(self.get_path(name), self._manifest_name, rospack=self) File "/usr/lib/python2.7/dist-packages/rospkg/rospack.py", line 203, in get_path raise ResourceNotFound(name, ros_paths=self._ros_paths) rospkg.co
This is what I am getting now
Edit your original question. Don't post code updates / console text in a comment.
You haven't answered my initial question: why are you running a simple Python script using
sudo?Actually I code on ROG Strix GL503, I was unable to install Ubuntu on it due to some problems. So instead I am using VMware. On VMware the code was not not getting extecuted with using sudo, so I used sudo. Please help me in installing Ubuntu on my laptop.
Regular Python scripts containing
rospyshould not needsudo. You'll have to tell us more about how you installed ROS, as that may give a clue.I'm afraid this is not a generic Ubuntu support platform. You'll want to post requests of that type of Ask Ubuntu or the Ubuntu support fora.