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i have a error "Traceback (most recent call last):" could you help me?

asked 2021-12-02 13:25:31 -0500

turkoahmet gravatar image

updated 2021-12-04 07:47:13 -0500

Mike Scheutzow gravatar image

~$ rosrun rosserial_python serial_node.py /dev/ttyACM0

Traceback (most recent call last): File "/home/ahmet/catkin_ws/src/rosserial/rosserial_python/nodes/serial_node.py", line 39, in <module> from rosserial_python import SerialClient, RosSerialServer File "/home/ahmet/catkin_ws/devel/lib/python2.7/dist-packages/rosserial_python/__init__.py", line 34, in <module> exec(__fh.read()) File "<string>", line 1, in <module> File "/home/ahmet/catkin_ws/src/rosserial/rosserial_python/src/rosserial_python/SerialClient.py", line 42, in <module> import queue ImportError: No module named queue"

When i used queue with capital Q in code, i have this error below.what should i do?

~$ rosrun rosserial_python serial_node.py /dev/ttyACM0

Traceback (most recent call last):

File "/home/ahmet/catkin_ws/src/rosserial/rosserial_python/nodes/serial_node.py", line 99, in <module> client.port.close() NameError: name 'client' is not defined

my ros is melodic version and python version is 2.7

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In Python 2 the module is Queue with capital Q.

osilva gravatar image osilva  ( 2021-12-02 14:49:05 -0500 )edit

i edited question a minute ago.i have last error that " ~$ rosrun rosserial_python serial_node.py /dev/ttyACM0

Traceback (most recent call last):

File "/home/ahmet/catkin_ws/src/rosserial/rosserial_python/nodes/serial_node.py", line 99, in <module> client.port.close() NameError: name 'client' is not defined "

turkoahmet gravatar image turkoahmet  ( 2021-12-02 15:02:03 -0500 )edit

@turkoahmet. If you got a response to a question then it should be accepted an another question started not edited for your future consideration.

osilva gravatar image osilva  ( 2021-12-02 15:05:29 -0500 )edit

Your answer may not be correct, after all, the error persists. ?

turkoahmet gravatar image turkoahmet  ( 2021-12-02 15:18:51 -0500 )edit

It’s a different error.

osilva gravatar image osilva  ( 2021-12-02 15:37:19 -0500 )edit

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answered 2021-12-04 07:41:56 -0500

Mike Scheutzow gravatar image

This ros package is available from apt with name ros-melodic-rosserial-python, so ordinarily you should use that one.

You can choose to build it yourself from source, but you now have the responsibility to checkout the proper branch that works in melodic.

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Asked: 2021-12-02 13:25:31 -0500

Seen: 64 times

Last updated: Dec 04 '21