interactive prompt for getting user input

core/prompt.py

@@ -0,0 +1,19 @@
+import os
+import tempfile
+
+def prompt(default=None):
+    editor = 'nano'
+    with tempfile.NamedTemporaryFile(mode='r+') as tmpfile:
+        if default:
+            tmpfile.write(default)
+            tmpfile.flush()
+
+        child_pid = os.fork()
+        is_child = child_pid == 0
+
+        if is_child:
+            os.execvp(editor, [editor, tmpfile.name])
+        else:
+            os.waitpid(child_pid, 0)
+            tmpfile.seek(0)
+            return tmpfile.read().strip()