No module named 'mavsdk'

I install mavsdk on my Raspberry pi 4. I installed on mavsdk with python3, my python3 version is 3.7.3 and has been set as compile default, but when compiling No module named ‘mavsdk’. Has anyone had the same problem and how did you fix it? thanks

pi@droneraspi:~/Desktop/huytd/MAVSDK-Python/examples $ python2

Python 2.7.16 (default, Oct 10 2019, 22:02:15)
[GCC 8.3.0] on linux2
Type “help”, “copyright”, “credits” or “license” for more information.

import mavsdk
Traceback (most recent call last):
File “”, line 1, in
ImportError: No module named mavsdk

exit()

pi@droneraspi:~/Desktop/huytd/MAVSDK-Python/examples $ python3

Python 3.7.3 (default, Jan 22 2021, 20:04:44)
[GCC 8.3.0] on linux
Type “help”, “copyright”, “credits” or “license” for more information.

import mavsdk
exit()

pi@droneraspi:~/Desktop/huytd/MAVSDK-Python/examples $ sudo python telemetry.py

Traceback (most recent call last):
File “telemetry.py”, line 5, in
from mavsdk import System
ModuleNotFoundError: No module named ‘mavsdk’

pi@droneraspi:~/Desktop/huytd/MAVSDK-Python/examples $ sudo python3 telemetry.py

Traceback (most recent call last):
File “telemetry.py”, line 5, in
from mavsdk import System
ModuleNotFoundError: No module named ‘mavsdk’