import os

# Walk through all directories and subdirectories from the current directory
for dirpath, dirnames, filenames in os.walk('.'):
    # For each file in the directories
    for filename in filenames:
        # If the file is a .sy file
        if filename.endswith('.sy'):
            filepath = os.path.join(dirpath, filename)
            with open(filepath, 'r') as file:
                lines = file.readlines()
            # Remove lines containing '#include "sylib.h"'
            lines = [line for line in lines if '#include "sylib.h"' not in line]
            with open(filepath, 'w') as file:
                file.writelines(lines)