9月 24, 2020 山姆
For this error, please try below 3 possible solutions
# Possible Solution 1
You may not install Python yet, please follow below command to install it
sudo apt install python3.7
# Possible Solution 2
You have installed Python3, but "python" command is not equal to "python3"
Please follow below command to let them equal (Ubuntu 20.04)
sudo apt install python-is-python3
# Possible Solution 3
Symptom is same as "Possible Solution 2", but OS is Ubuntu 16.04.
Please follow below commands to create a symlink
whereis python3
run above command to get Python and Python3 installed directory\ies
sudo ln -s /usr/bin/python3 /usr/bin/python
run above command to create a symlink, the /usr/bin/python3 and /usr/bin/python are examples, please instead by the result of "whereis python3" command