when I use yum install python-devel -y in centos8 system

Question

Prompt me for the following error

No match for argument: python-devel

Answer 1

python2.7 is completely obsolete by now. You should work with python3. Hence you could install:

dnf install python3-devel -y

(dnf is the replacement for yum on centos8. yum is still available but just an alias for dnf)