Make a line follower for the mbot 2

**Line Follower for Mbot 2 using Python**

This code uses the Mbot 2's sensors to follow a line. The Mbot 2 has two infrared sensors, which we will use to detect the line.

**Hardware Requirements:**

* Mbot 2 robot
* Breadboard and jumper wires
* Power source (batteries or USB cable)

**Software Requirements:**

* Python 3.x
* Mbot 2 library (install using `pip install mbot2`)

**Code:**
```python
import mbot2

# Initialize the Mbot 2 robot
mbot = mbot2.Mbot2()

# Set the speed of the robot
speed = 50

# Function to follow the line
def follow_line():
    # Read the values from the infrared sensors
    left_sensor = mbot.get_ir_left()
    right_sensor = mbot.get_ir_right()

    # If the left sensor detects the line, turn right
    if left_sensor > 500:
        mbot.set_motor_speed(mbot2.MOTOR_LEFT, speed)
        mbot.set_motor_speed(mbot2.MOTOR_RIGHT, -speed)
    # If the right sensor detects the line, turn left
    elif right_sensor > 500:
        mbot.set_motor_speed(mbot2.MOTOR_LEFT, -speed)
        mbot.set_motor_speed(mbot2.MOTOR_RIGHT, speed)
    # If neither sensor detects the line, move forward
    else:
        mbot.set_motor_speed(mbot2.MOTOR_LEFT, speed)
        mbot.set_motor_speed(mbot2.MOTOR_RIGHT, speed)

# Main loop
while True:
    follow_line()
    mbot.delay(100)
```
**Explanation:**

1. We initialize the Mbot 2 robot using the `mbot2` library.
2. We set the speed of the robot to 50.
3. We define a function `follow_line()` that reads the values from the infrared sensors.
4. If the left sensor detects the line, we turn the robot right by setting the left motor to the speed and the right motor to the negative speed.
5. If the right sensor detects the line, we turn the robot left by setting the left motor to the negative speed and the right motor to the speed.
6. If neither sensor detects the line, we move the robot forward by setting both motors to the speed.
7. We use a while loop to continuously call the `follow_line()` function and delay for 100 milliseconds.

**Note:**

* You may need to adjust the speed and delay values to suit your robot's performance.
* You can also add more complex logic to the `follow_line()` function to improve the robot's line-following capabilities.
* Make sure to calibrate the infrared sensors before running the code.