| # Directory Structure Analysis Task | |
| You need to recursively traverse the entire folder structure under the main directory and count the total number of `.py` files in the entire directory (including all subdirectories). | |
| Write the answer (just a single number) in a file named `structure_analysis.txt` in the main directory (at the same level as the `complex_structure` folder). | |
| You should not change or delete any existed files. | |
| Do not try to use python code. | |