Print Python version on Linux

.github/workflows/linux.yml

@@ -43,6 +43,7 @@ jobs:
         gcc -Wall -fPIC -shared -o libcalc.so libcalc.c -lsbcl
         gcc -Wall -o example example.c -lcalc -lsbcl
         echo "(+ 1 2)" | ./example
+        python --version
         echo "(+ 1 2)" | python ./example.py
         python ./exhaust_heap.py