Update update_readme.py

Author: sanajitjana

.github/scripts/update_readme.py

@@ -1,44 +1,42 @@
 import os
 from datetime import datetime
-from zoneinfo import ZoneInfo  # Built-in in Python 3.9+
-import re
+import subprocess
 
 README_PATH = "README.md"
 
-# Count only .java files inside Easy, Medium, Hard (recursive)
+# Count problems
 def count_problems():
     count = 0
     for folder in ["Easy", "Medium", "Hard"]:
         if os.path.exists(folder):
-            for root, _, files in os.walk(folder):
-                for file in files:
-                    if file.endswith(".java"):
-                        count += 1
+            for file in os.listdir(folder):
+                if os.path.isfile(os.path.join(folder, file)):
+                    count += 1
     return count
 
-# Get current IST time in human-readable format
+# Get last commit date
 def last_updated():
-    ist_time = datetime.now(ZoneInfo("Asia/Kolkata"))
-    return ist_time.strftime("%d %b %Y, %I:%M %p IST")
+    result = subprocess.run(
+        ["git", "log", "-1", "--format=%cd", "--date=iso"],
+        capture_output=True,
+        text=True
+    )
+    return result.stdout.strip()
 
-# Update README.md placeholders
 def update_readme():
     with open(README_PATH, "r", encoding="utf-8") as f:
         content = f.read()
 
     problems_count = count_problems()
     updated_time = last_updated()
 
-    # Use regex to ensure replacement works even if extra spaces
-    content = re.sub(
-        r"Problems solved: <!--PROBLEMS_COUNT-->.*",
-        f"Problems solved: <!--PROBLEMS_COUNT-->{problems_count}",
-        content
+    content = content.replace(
+        "Problems solved: <!--PROBLEMS_COUNT-->",
+        f"Problems solved: {problems_count}"
     )
-    content = re.sub(
-        r"Last updated: <!--LAST_UPDATED-->.*",
-        f"Last updated: <!--LAST_UPDATED-->{updated_time}",
-        content
+    content = content.replace(
+        "Last updated: <!--LAST_UPDATED-->",
+        f"Last updated: {updated_time}"
     )
 
     with open(README_PATH, "w", encoding="utf-8") as f: