diff --git a/gaboshlib/g_python.sh b/gaboshlib/g_python.sh
index cdff1ac..1ff71a4 100644
--- a/gaboshlib/g_python.sh
+++ b/gaboshlib/g_python.sh
@@ -12,83 +12,103 @@ function g_python {
   then
     local python_input="$g_tmp/$$-g_python_input"
     local python_output="$g_tmp/$$-g_python_output"
+    local python_error="$g_tmp/$$-g_python_error"
     # create fifo pipe
     [ -p "$python_input" ] || mkfifo "$python_input"
     [ -p "$python_output" ] || mkfifo "$python_output"
+    [ -p "$python_error" ] || mkfifo "$python_error"
     # run bc in background und switch i/o to pipes
-    python3 -iu < "$python_input" > "$python_output" 2>/dev/null &
+    python3 -iuq  < "$python_input" > "$python_output" 2> "$python_error" &
     # store in filedescriptiors
     exec {g_fd_python_in}> "$python_input"
     exec {g_fd_python_out}< "$python_output"
+    exec {g_fd_python_error}< "$python_error"
   fi
-  # send calculation and read result
+  
+  # send python command
   echo "$@
 print('')" >&${g_fd_python_in}
+
+  # read output
   read -u ${g_fd_python_out} g_python_result
+
+  local g_errline
+  local g_err_array
+
+  # look for error
+  while read -t 0.001 -u ${g_fd_python_error} g_errline
+  do
+    [[ "$g_errline" =~ \>\>\>$ ]] && break
+    [ -z "$g_errline" ] && break
+    echo $g_errline 1>&2
+    g_err_array+=("$g_errline")   
+  done
+  [ -n "$g_err_array" ] && return 1
 }
 
-#function g_python {
-#
-#  local g_python_tmp=${g_tmp}/$$
-#  g_python_out=${g_python_tmp}/python-out
-#  local g_python_in=${g_python_tmp}/python-in
-#  local g_python_error=${g_python_tmp}/python-error
-#  local g_python_jobs
-#  mapfile -t g_python_jobs < <(jobs -r)
-#  unset g_python_result
-#
-#  # Use python in backround for multiple python commands running much faster
-#  #if [ -z "${g_python_running}" ]
-#  if [[ ${g_python_jobs[*]} != *python-pipeexec.py* ]]
-#  then
-#    mkdir -p ${g_python_tmp}
-#    if [ -s ${g_python_error} ]
-#    then
-#      g_echo_error "From last python run: $(cat ${g_python_error})"
-#    fi
-#    [ -p ${g_python_in} ] || mkfifo ${g_python_in}
-#    echo "while 1:
-#  exec(open(\"${g_python_in}\").read())
-#  print('DONE')
-#" >${g_python_tmp}/python-pipeexec.py
-#
-#    # python stream channel
-#    { python3 -u ${g_python_tmp}/python-pipeexec.py >>${g_python_out} 2>>${g_python_error} & }
-#    g_python_running="true"
-#  fi
-#
-#  # do python
-#  >${g_python_out}
-#  >${g_python_error}
-#  echo $@ >${g_python_in}
-#
-#  while true
-#  do
-#   
-#    # Check for output
-#    if [ -s ${g_python_out} ]
-#    then
-#      mapfile -t g_python_result <${g_python_out}
-#      if [[ ${g_python_result[-1]} == DONE ]]
-#      then
-#        # remove the DONE output (last array element
-#        unset g_python_result[-1]
-#        break
-#      fi
-#    fi
-#
-#    # Check for error
-#    mapfile -t g_python_jobs < <(jobs -r)
-#    if [ -s "${g_python_error}" ] || [[ ${g_python_jobs[*]} != *python-pipeexec.py* ]]
-#    then
-#      g_echo_error "Python Progress not running:
-#$(cat ${g_python_error})"
-#      return 1
-#    fi
-#
-#    # sleep a short time
-#    sleep 0.1
-#  done
-#
-#}
+
+function g_python_old {
+
+  local g_python_tmp=${g_tmp}/$$
+  g_python_out=${g_python_tmp}/python-out
+  local g_python_in=${g_python_tmp}/python-in
+  local g_python_error=${g_python_tmp}/python-error
+  local g_python_jobs
+  mapfile -t g_python_jobs < <(jobs -r)
+  unset g_python_result
+
+  # Use python in backround for multiple python commands running much faster
+  #if [ -z "${g_python_running}" ]
+  if [[ ${g_python_jobs[*]} != *python-pipeexec.py* ]]
+  then
+    mkdir -p ${g_python_tmp}
+    if [ -s ${g_python_error} ]
+    then
+      g_echo_error "From last python run: $(cat ${g_python_error})"
+    fi
+    [ -p ${g_python_in} ] || mkfifo ${g_python_in}
+    echo "while 1:
+  exec(open(\"${g_python_in}\").read())
+  print('DONE')
+" >${g_python_tmp}/python-pipeexec.py
+
+    # python stream channel
+    { python3 -u ${g_python_tmp}/python-pipeexec.py >>${g_python_out} 2>>${g_python_error} & }
+    g_python_running="true"
+  fi
+
+  # do python
+  >${g_python_out}
+  >${g_python_error}
+  echo $@ >${g_python_in}
+
+  while true
+  do
+   
+    # Check for output
+    if [ -s ${g_python_out} ]
+    then
+      mapfile -t g_python_result <${g_python_out}
+      if [[ ${g_python_result[-1]} == DONE ]]
+      then
+        # remove the DONE output (last array element
+        unset g_python_result[-1]
+        break
+      fi
+    fi
+
+    # Check for error
+    mapfile -t g_python_jobs < <(jobs -r)
+    if [ -s "${g_python_error}" ] || [[ ${g_python_jobs[*]} != *python-pipeexec.py* ]]
+    then
+      g_echo_error "Python Progress not running:
+$(cat ${g_python_error})"
+      return 1
+    fi
+
+    # sleep a short time
+    sleep 0.1
+  done
+
+}