I need some help fixing this code. Im trying to make a robot move in the shape of a triangle and I am not sure what I am doing wrong?

def move$\_$triangle$()$:

rospy.init$\_$node$(\text{'}$move$\_$triangle', anonymous$=$True$)$

pub $=$ rospy.Publisher$(\text{'}/$cmd$\_$vel', Twist, queue$\_$size$=10)$

rate $=$ rospy.Rate$(1)$ # $1$ Hz loop rate

move$\_$cmd $=$ Twist$()$

# Define speed parameters

linear$\_$speed $=1\mathrm{.}5$ # meters per second $($forward speed$)$

angular$\_$speed $=$ math.pi # radians per second $($angular speed for $180$ degrees per second$)$

# Distance to move for one side of the triangle $(2$ seconds at linear$\_$speed$)$

side$\_$length $=2$ # meters $($side of the triangle$)$

# Time to complete one side of the triangle $($based on linear speed$)$

move$\_$time $=$ side$\_$length $/$ linear$\_$speed # time $=$ distance $/$ speed $($in seconds$)$

for $\_$ in range$(3)$: # Three sides of the triangle

# Move forward for the side of the triangle

move$\_$cmd$.$linear.x $=$ linear$\_$speed

move$\_$cmd$.$angular.z $=0\mathrm{.}0$

pub.publish$($move$\_$cmd$)$

rospy.sleep$($move$\_$time$)$ # Sleep for the duration to cover the side length

# Stop before turning

move$\_$cmd$.$linear.x $=0\mathrm{.}0$

pub.publish$($move$\_$cmd$)$

rospy.sleep$(1)$ # Stop for $1$ second

# Rotate $120$ degrees $($angular speed $=$ math.pi radians$/$s$,120$ degrees $=2$pi$/3$ radians$)$

move$\_$cmd$.$angular.z $=$ angular$\_$speed # Set angular velocity for $120-$degree turn

pub.publish$($move$\_$cmd$)$

# Time to complete the $120-$degree turn $(2$$/3$ radians$)$

turn$\_$time $=(2*$ math.pi $/3)/$ angular$\_$speed # Time $=$ angle $/$ angular speed

rospy.sleep$($turn$\_$time$)$ # Sleep for the duration of the turn

# Stop rotating

move$\_$cmd$.$angular.z $=0\mathrm{.}0$

pub.publish$($move$\_$cmd$)$

rospy.sleep$(1)$ # Pause for a moment before starting the next side

# Stop after completing the triangle movement

move$\_$cmd$.$linear.x $=0\mathrm{.}0$

move$\_$cmd$.$angular.z $=0\mathrm{.}0$

pub.publish$($move$\_$cmd$)$