yaml parser raises an error "Sequence should be of same type" when meets .nan in list of doubles #555
Description
ros2 launch raises an exception while parsing list with .nan value
- Operating System:
- Ubuntu 18.04
- Installation type:
- binaries
- Version or commit hash:
- dashing
- DDS implementation:
- Fast-RTPS
- Client library (if applicable):
- rclcpp, rclpy
Steps to reproduce issue
Create python or cpp package:
import rclpy
from rclpy.node import Node
class TestNode(Node):
def __init__(self):
super().__init__("parameter_holder")
def main(args=None):
rclpy.init(args=args)
parameter_holder = TestNode()
rclpy.spin(parameter_holder)
parameter_holder.destroy_node()
rclpy.shutdown()
return 0launch file:
from launch.launch_description import LaunchDescription
from launch_ros.actions import Node
def generate_launch_description():
return LaunchDescription([
Node(package='reprod',
node_executable='param_holder',
node_name='parameter_holder',
output='screen',
parameters=[
"/tmp/test.yaml"
])
])configuration file
parameter_holder:
ros__parameters:
test_list: [1.0, 2.0]
test_list2: [1.0, .nan]Expected behavior
Yaml parser should treat .nan as valid double (or float) value.
Actual behavior
Yaml parser treats .nan as string and throws exception:
RuntimeError: Failed to parse yaml params file '/tmp/test.yaml': Sequence should be of same type. Value type 'string' do not belong at line_num 4