diff --git a/tools/unicode_dbl_width.py b/tools/unicode_dbl_width.py
index 2457834a..adbd936f 100755
--- a/tools/unicode_dbl_width.py
+++ b/tools/unicode_dbl_width.py
@@ -10,7 +10,7 @@ import argparse
 from collections import namedtuple
 import xml.etree.ElementTree as ET
 
-Range = namedtuple('range', ['width', 'start', 'end'])
+URange = namedtuple('unicode_range', ['width', 'start', 'end'])
 
 def get_ranges(xmlfile, emoji_as_wide):
     tree = ET.parse(xmlfile)
@@ -19,14 +19,13 @@ def get_ranges(xmlfile, emoji_as_wide):
     chars = repertoire.findall("{http://www.unicode.org/ns/2003/ucd/1.0}char")
 
     ranges = []
-    range = Range('N', 0, 0)
+    r = URange('N', 0, 0)
     for c in chars:
         ea = c.get('ea')
         if ea in ('Na', 'H'):
             ea = 'N'
         if ea in ('F'):
             ea = 'W'
-        assert ea in ('N', 'A', 'W')
         cp = c.get('cp')
         if not cp:
             continue
@@ -36,26 +35,26 @@ def get_ranges(xmlfile, emoji_as_wide):
                 ea = 'W'
 
         cp = int(cp, 16)
-        if ea != range[0]:
-            ranges.append(range)
-            range = Range(ea, cp, cp)
+        if ea != r[0]:
+            ranges.append(r)
+            r = URange(ea, cp, cp)
         else:
-            range = range._replace(end=cp)
+            r = r._replace(end=cp)
 
-    ranges.append(range)
+    ranges.append(r)
 
     return ranges
 
 def merge_ranges(ranges, is_same_width):
     res = []
-    range = ranges[0]
+    cur_range = ranges[0]
     for r in ranges:
-        if is_same_width(r, range):
-            range = range._replace(end=r.end)
+        if is_same_width(r, cur_range):
+            cur_range = cur_range._replace(end=r.end)
         else:
-            res.append(range)
-            range = r
-    res.append(range)
+            res.append(cur_range)
+            cur_range = r
+    res.append(cur_range)
     return res
 
 def skip_ranges(ranges, width_skipped):
@@ -65,7 +64,7 @@ def skip_ranges(ranges, width_skipped):
             res.append(r)
     return res
 
-def gen_header(range, file_header):
+def gen_header(cur_range, file_header):
     file_header.write(
 """/* XXX: Code generated by tool unicode_dbl_width.py */
 #ifndef _TERMPTY_DBL_H__
@@ -79,7 +78,7 @@ _termpty_is_dblwidth_get(const Termpty *ty, const Eina_Unicode g)
 {
    /* optimize for latin1 non-ambiguous */
 """)
-    file_header.write(f"   if (g <= 0x{range.end:X})")
+    file_header.write(f"   if (g <= 0x{cur_range.end:X})")
     file_header.write(
 """
      return EINA_FALSE;