Get information for multiple Python interpreters

Author: matyasselmeci

osg-system-profiler

@@ -1,20 +1,6 @@
 #!/bin/bash -p
 # ^ -p protects us from shellshock
 
-# pick a python
-if command -v python >/dev/null 2>&1; then
-    python=python
-elif command -v python3 >/dev/null 2>&1; then
-    python=python3
-elif command -v python2 >/dev/null 2>&1; then
-    python=python2
-elif test -x /usr/libexec/platform-python; then
-    python=/usr/libexec/platform-python
-else
-    echo >&2 "Can't find Python"
-fi
-
-
 realdir ()
 {
     # print the canonical path of a directory, resolving symlinks in
@@ -138,6 +124,15 @@ message() {
     echo "$@" >&3
 }
 
+python_info () {
+    local python=$1
+    $python -c "import sys; print('Version: ' + sys.version)"
+    $python -c "import sys; print('Executable: ' + sys.executable)"
+    $python -c "import sys; print('Prefix: ' + sys.prefix)"
+    $python -c 'import platform; print("Architecture: " + str(platform.architecture()))'
+    $python -c "import sys; print('Search paths: ' + str(sys.path))"
+}
+
 dir=`pwd`
 
 if [ ! -w $dir ]; then
@@ -231,12 +226,12 @@ ps -u xrootd u
 echo ""
 
 echo "***** Python information:"
-$python -c "import sys; print('Version: ' + sys.version)"
-$python -c "import sys; print('Executable: ' + sys.executable)"
-$python -c "import sys; print('Prefix: ' + sys.prefix)"
-$python -c 'import platform; print("Architecture: " + str(platform.architecture()))'
-$python -c "import sys; print('Search paths: ' + str(sys.path))"
-echo ""
+
+for python in "$(command -v python)" "$(command -v python2)" "$(command -v python3)" "/usr/libexec/platform-python"; do
+    if [[ -n $python && -x $python ]]; then
+        python_info "$python"
+    fi
+done
 
 run_cmd openssl version