Create README.md

README.md

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+## Combine the split files into a single file named 'ILtrain2.db.gzip'
+
+
+```python
+import gzip
+import os
+
+def combine_files(input_prefix, num_parts, output_file):
+    with gzip.open(output_file, 'wb') as f_out:
+        for i in range(1, num_parts + 1):
+            part_file = f"{input_prefix}_part{i}.gz"
+            with gzip.open(part_file, 'rb') as f_in:
+                shutil.copyfileobj(f_in, f_out)
+                
+            os.remove(part_file)
+
+
+combine_files('ILtrain2_part', 5, 'ILtrain2.db.gzip')
+```