diff --git a/syncthing.sh b/syncthing.sh
index e10c0dc..b877209 100755
--- a/syncthing.sh
+++ b/syncthing.sh
@@ -96,20 +96,20 @@ add_device_by_pending() {
     if [ ${#id_list[@]} -eq 1 ]; then
         DEVICE_ID="${id_list[0]}"
         local pending_name
-        pending_name=$(echo "$pending" | python3 -c "import sys,json; d=json.load(sys.stdin); print(d['${DEVICE_ID}'].get('name',''))")
+        pending_name=$(echo "$pending" | python3 -c "import sys,json; d=json.load(sys.stdin); print(d[sys.argv[1]].get('name',''))" "$DEVICE_ID")
     else
         echo "Pending devices:"
         local i=1
         for id in "${id_list[@]}"; do
             local name
-            name=$(echo "$pending" | python3 -c "import sys,json; d=json.load(sys.stdin); print(d['${id}'].get('name','(unknown)'))")
+            name=$(echo "$pending" | python3 -c "import sys,json; d=json.load(sys.stdin); print(d[sys.argv[1]].get('name','(unknown)'))" "$id")
             echo "  $i) $name — $id"
             i=$((i+1))
         done
         read -rp "Choose [1-${#id_list[@]}]: " CHOICE
         [[ "$CHOICE" =~ ^[0-9]+$ ]] && [ "$CHOICE" -ge 1 ] && [ "$CHOICE" -le "${#id_list[@]}" ] || die "Invalid choice."
         DEVICE_ID="${id_list[$((CHOICE-1))]}"
-        pending_name=$(echo "$pending" | python3 -c "import sys,json; d=json.load(sys.stdin); print(d['${DEVICE_ID}'].get('name',''))")
+        pending_name=$(echo "$pending" | python3 -c "import sys,json; d=json.load(sys.stdin); print(d[sys.argv[1]].get('name',''))" "$DEVICE_ID")
     fi
 
     read -rp "Device name [${pending_name:-new-device}]: " DEVICE_NAME
@@ -185,9 +185,9 @@ for i, d in enumerate(json.load(sys.stdin), 1):
     shared_folders=$(echo "$folders" | python3 -c "
 import sys, json
 folders = json.load(sys.stdin)
-shared = [f['label'] or f['id'] for f in folders if any(dev['deviceID']=='${device_id}' for dev in f.get('devices',[]))]
+shared = [f['label'] or f['id'] for f in folders if any(dev['deviceID']==sys.argv[1] for dev in f.get('devices',[]))]
 print('\n'.join(shared))
-")
+" "$device_id")
     if [ -n "$shared_folders" ]; then
         warn "Device '${device_name}' is still sharing these folders:"
         echo "$shared_folders" | sed 's/^/    /'
@@ -373,7 +373,7 @@ for i, f in enumerate(json.load(sys.stdin), 1):
     local i=1
     while IFS= read -r did; do
         local dname
-        dname=$(echo "$devices" | python3 -c "import sys,json; devs=json.load(sys.stdin); match=[d['name'] for d in devs if d['deviceID']=='${did}']; print(match[0] if match else '${did}')")
+        dname=$(echo "$devices" | python3 -c "import sys,json; devs=json.load(sys.stdin); match=[d['name'] for d in devs if d['deviceID']==sys.argv[1]]; print(match[0] if match else sys.argv[1])" "$did")
         echo "  $i) $dname — $did"
         i=$((i+1))
     done <<< "$shared_ids"
@@ -386,7 +386,7 @@ for i, f in enumerate(json.load(sys.stdin), 1):
     local target_id
     target_id=$(echo "$shared_ids" | sed -n "${D_CHOICE}p")
     local target_name
-    target_name=$(echo "$devices" | python3 -c "import sys,json; devs=json.load(sys.stdin); match=[d['name'] for d in devs if d['deviceID']=='${target_id}']; print(match[0] if match else '${target_id}')")
+    target_name=$(echo "$devices" | python3 -c "import sys,json; devs=json.load(sys.stdin); match=[d['name'] for d in devs if d['deviceID']==sys.argv[1]]; print(match[0] if match else sys.argv[1])" "$target_id")
 
     read -rp "Unshare '${folder_label}' from '${target_name}'? [y/N]: " CONFIRM
     [[ "${CONFIRM,,}" == "y" ]] || { info "Aborted."; return; }