run interactive python shell from bash

gaboshlib/g_python.sh

@@ -0,0 +1,37 @@
+function g_python {
+
+  unset g_python_result
+  g_tmp=/tmp
+  g_rnd=$$
+  # Use python in backround for multiple python commands running much faster
+  if [ -z "${g_python_running}" ]
+  then
+    mkdir -p ${g_tmp}/${g_rnd}
+    [ -p ${g_tmp}/${g_rnd}/python-in ] || mkfifo ${g_tmp}/${g_rnd}/python-in
+    [ -p ${g_tmp}/${g_rnd}/python-out ] || mkfifo ${g_tmp}/${g_rnd}/python-out
+    echo "while 1:
+  exec(open(\"${g_tmp}/${g_rnd}/python-in\").read())
+" >${g_tmp}/${g_rnd}/python-pipeexec.py
+
+    # bc stream channel
+    { python3 -u ${g_tmp}/${g_rnd}/python-pipeexec.py >${g_tmp}/${g_rnd}/python-out 2>&1 & }
+    g_python_running="true"
+  fi
+
+  # do python
+  local g_python_jobs
+  mapfile -t g_python_jobs < <(jobs -r)
+  #echo "Jobs $g_python_jobs"
+  #if jobs -r | grep -q python-pipeexec.py
+  if [[ $g_python_jobs =~ python-pipeexec.py ]]
+  then
+    echo $@ >${g_tmp}/${g_rnd}/python-in &
+    read -t 0.1 g_python_result <${g_tmp}/${g_rnd}/python-out
+    echo "RESULT: $g_python_result"
+  else
+    echo "FAIL: $g_python_result"
+    unset g_python_running    
+  fi
+
+}
+