Update bump_version.py

Author: BBEK-Anand

scripts/bump_version.py

@@ -1,29 +1,32 @@
 # scripts/bump_version.py
 
 import os
-import sys
 
 VERSION_FILE = './src/PTLF/_version.py'
 
 def read_version():
+    """Read and parse the __version__ value from the version file."""
     with open(VERSION_FILE, 'r') as f:
         for line in f:
-            if line.startswith('__version__'):
-                # Extract version between quotes
-                version_str = line.split('=')[1].strip().strip('"\'')
-                break
+            if line.strip().startswith('__version__'):
+                parts = line.split('=', 1)
+                if len(parts) == 2:
+                    version_str = parts[1].strip().strip('"\'')
+                    break
         else:
-            raise RuntimeError("Version string not found")
+            raise RuntimeError("Version string not found in _version.py")
 
     parts = version_str.split('.')
-    if len(parts) != 3 or not all(p.isdigit() for p in parts):
+    if not all(p.isdigit() for p in parts):
         raise ValueError(f"Invalid version format: {version_str}")
 
-    return tuple(map(int, parts))
+    return [int(p) for p in parts]
 
 def bump_patch_version():
-    x, y, z = read_version()
-    new_version = f"{x}.{y}.{z + 1}"
+    """Increment the last numeric part of the version."""
+    parts = read_version()
+    parts[-1] += 1  # bump the last number
+    new_version = '.'.join(map(str, parts))
 
     with open(VERSION_FILE, 'w') as f:
         f.write(f"__version__ = '{new_version}'\n")