diff --git a/generate_compdb.py b/generate_compdb.py
index 8866913..126fe1c 100755
--- a/generate_compdb.py
+++ b/generate_compdb.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
 
+# Import necessary libraries and modules
 from __future__ import print_function, division
-
 import argparse
 import fnmatch
 import functools
@@ -12,31 +12,31 @@
 import re
 import sys
 
-
+# Regular expressions to extract command and source variables
 CMD_VAR_RE = re.compile(r'^\s*(?:saved)?cmd_(\S+)\s*:=\s*(.+)\s*$', re.MULTILINE)
 SOURCE_VAR_RE = re.compile(r'^\s*source_(\S+)\s*:=\s*(.+)\s*$', re.MULTILINE)
 
-
+# Function to print a progress bar
 def print_progress_bar(progress):
     progress_bar = '[' + '|' * int(50 * progress) + '-' * int(50 * (1.0 - progress)) + ']'
     print('\r', progress_bar, "{0:.1%}".format(progress), end='\r', file=sys.stderr)
 
-
+# Function to parse a command file and extract compile commands
 def parse_cmd_file(out_dir, cmdfile_path):
     with open(cmdfile_path, 'r') as cmdfile:
         cmdfile_content = cmdfile.read()
 
-    commands = { match.group(1): match.group(2) for match in CMD_VAR_RE.finditer(cmdfile_content) }
-    sources = { match.group(1): match.group(2) for match in SOURCE_VAR_RE.finditer(cmdfile_content) }
+    commands = {match.group(1): match.group(2) for match in CMD_VAR_RE.finditer(cmdfile_content)}
+    sources = {match.group(1): match.group(2) for match in SOURCE_VAR_RE.finditer(cmdfile_content)}
 
     return [{
-            'directory': out_dir,
-            'command': commands[o_file_name],
-            'file': source,
-            'output': o_file_name
-        } for o_file_name, source in sources.items()]
-
+        'directory': out_dir,
+        'command': commands[o_file_name],
+        'file': source,
+        'output': o_file_name
+    } for o_file_name, source in sources.items()]
 
+# Function to generate compile_commands.json from *.o.cmd files
 def gen_compile_commands(cmd_file_search_path, out_dir):
     print("Building *.o.cmd file list...", file=sys.stderr)
 
@@ -47,7 +47,7 @@ def gen_compile_commands(cmd_file_search_path, out_dir):
 
     cmd_files = []
     for search_path in cmd_file_search_path:
-        if (os.path.isdir(search_path)):
+        if os.path.isdir(search_path):
             for cur_dir, subdir, files in os.walk(search_path):
                 cmd_files.extend(os.path.join(cur_dir, cmdfile_name) for cmdfile_name in fnmatch.filter(files, '*.o.cmd'))
         else:
@@ -80,13 +80,12 @@ def gen_compile_commands(cmd_file_search_path, out_dir):
     with open('compile_commands.json', 'w') as compdb_file:
         json.dump(compdb, compdb_file, indent=1)
 
-
+# Main function to parse command line arguments and generate compile_commands.json
 def main():
     cmd_parser = argparse.ArgumentParser()
     cmd_parser.add_argument('-O', '--out-dir', type=str, default=os.getcwd(), help="Build output directory")
     cmd_parser.add_argument('cmd_file_search_path', nargs='*', help="*.cmd file search path")
     gen_compile_commands(**vars(cmd_parser.parse_args()))
 
-
 if __name__ == '__main__':
     main()