
import sys
import logging

import numpy as np

# suppress logging warnings due to rospy
logging.basicConfig(filename='/dev/null')
import rosbag

from antlia.dtype import LIDAR_CONVERTED_DTYPE

def print_bag(bag, topics=None):
    if topics is None:
        #topics = ['/tf', '/scan']
        topics = ['/scan', '/flagbutton_pressed']

    for message in bag.read_messages(topics=topics):
        print(message)


if __name__ == '__main__':
    if len(sys.argv) < 2:
        print(('Usage: {} <rosbag> \n\n'
               'Print contents of rosbag file.'
               ).format(__file__))
        sys.exit(1)

    outfile = None
    filename = sys.argv[1]

    with rosbag.Bag(filename) as bag:
        print_bag(bag)

    sys.exit()

import sys
import logging

# suppress logging warnings due to rospy
logging.basicConfig(filename='/dev/null')
import rosbag


def print_bag(bag, topics=None):
    for message in bag.read_messages(topics=topics):
        print(message)


if __name__ == '__main__':
    if len(sys.argv) < 2:
        print(('Usage: {} [topics] <rosbag> \n\n'
               'topics:\tcomma-separated list of topics\n\n'
               'Print contents of rosbag file. If topics is not provided, \n'
               'all topics are printed\n'
               ).format(__file__))
        sys.exit(1)

    topics = None
    if len(sys.argv) == 3:
        topics = [t.strip() for t in sys.argv[1].split(',')]
        filename = sys.argv[2]
    else:
        filename = sys.argv[1]

    with rosbag.Bag(filename) as bag:
        print_bag(bag, topics)

    sys.exit()

Add argument to specify bag topics
Add argument to specify bag topics

- 
  import sys
  import logging
- 
- import numpy as np
  
  # suppress logging warnings due to rospy
  logging.basicConfig(filename='/dev/null')
  import rosbag
  
- from antlia.dtype import LIDAR_CONVERTED_DTYPE
  
  def print_bag(bag, topics=None):
-     if topics is None:
-         #topics = ['/tf', '/scan']
-         topics = ['/scan', '/flagbutton_pressed']
- 
      for message in bag.read_messages(topics=topics):
          print(message)
  
  
  if __name__ == '__main__':
      if len(sys.argv) < 2:
-         print(('Usage: {} <rosbag> \n\n'
+         print(('Usage: {} [topics] <rosbag> \n\n'
+                'topics:\tcomma-separated list of topics\n\n'
-                'Print contents of rosbag file.'
+                'Print contents of rosbag file. If topics is not provided, \n'
+                'all topics are printed\n'
                 ).format(__file__))
          sys.exit(1)
  
-     outfile = None
+     topics = None
+     if len(sys.argv) == 3:
+         topics = [t.strip() for t in sys.argv[1].split(',')]
+         filename = sys.argv[2]
+     else:
-     filename = sys.argv[1]
+         filename = sys.argv[1]
  
      with rosbag.Bag(filename) as bag:
-         print_bag(bag)
+         print_bag(bag, topics)
  
      sys.exit()
  
Add argument to specify bag topics
## Code Before:

import sys
import logging

import numpy as np

# suppress logging warnings due to rospy
logging.basicConfig(filename='/dev/null')
import rosbag

from antlia.dtype import LIDAR_CONVERTED_DTYPE

def print_bag(bag, topics=None):
    if topics is None:
        #topics = ['/tf', '/scan']
        topics = ['/scan', '/flagbutton_pressed']

    for message in bag.read_messages(topics=topics):
        print(message)


if __name__ == '__main__':
    if len(sys.argv) < 2:
        print(('Usage: {} <rosbag> \n\n'
               'Print contents of rosbag file.'
               ).format(__file__))
        sys.exit(1)

    outfile = None
    filename = sys.argv[1]

    with rosbag.Bag(filename) as bag:
        print_bag(bag)

    sys.exit()

## Instruction:
Add argument to specify bag topics
## Code After:
import sys
import logging

# suppress logging warnings due to rospy
logging.basicConfig(filename='/dev/null')
import rosbag


def print_bag(bag, topics=None):
    for message in bag.read_messages(topics=topics):
        print(message)


if __name__ == '__main__':
    if len(sys.argv) < 2:
        print(('Usage: {} [topics] <rosbag> \n\n'
               'topics:\tcomma-separated list of topics\n\n'
               'Print contents of rosbag file. If topics is not provided, \n'
               'all topics are printed\n'
               ).format(__file__))
        sys.exit(1)

    topics = None
    if len(sys.argv) == 3:
        topics = [t.strip() for t in sys.argv[1].split(',')]
        filename = sys.argv[2]
    else:
        filename = sys.argv[1]

    with rosbag.Bag(filename) as bag:
        print_bag(bag, topics)

    sys.exit()
