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| import gradio as gr | |
| import ast | |
| def grade(student_code): | |
| feedback = [] | |
| grade = 10 | |
| try: | |
| tree = ast.parse(student_code) | |
| # Initial flags | |
| wifi_connected = False | |
| http_request_used = False | |
| json_parsed = False | |
| time_sliced = False | |
| led_setup = False | |
| led_logic = False | |
| for node in ast.walk(tree): | |
| # WiFi connection using station mode | |
| if isinstance(node, ast.Call) and isinstance(node.func, ast.Attribute): | |
| if node.func.attr == "connect": | |
| wifi_connected = True | |
| # Use of urequests or requests.get | |
| if isinstance(node, ast.Import) or isinstance(node, ast.ImportFrom): | |
| for alias in node.names: | |
| if alias.name == "urequests" or alias.name == "requests": | |
| http_request_used = True | |
| if isinstance(node, ast.Call): | |
| if hasattr(node.func, 'attr') and node.func.attr == "get": | |
| http_request_used = True | |
| # Use of json() method | |
| if hasattr(node.func, 'attr') and node.func.attr == "json": | |
| json_parsed = True | |
| # Check for slicing used to remove date from string | |
| if isinstance(node, ast.Subscript) and isinstance(node.slice, ast.Slice): | |
| time_sliced = True | |
| # Check red LED setup on pin 21 | |
| if isinstance(node, ast.Assign): | |
| if isinstance(node.value, ast.Call) and hasattr(node.value.func, 'attr'): | |
| if node.value.func.attr == "Pin": | |
| args = node.value.args | |
| if len(args) >= 2 and isinstance(args[0], ast.Constant): | |
| if args[0].value == 21: | |
| led_setup = True | |
| # Check comparison for metro < 2 min | |
| if isinstance(node, ast.Compare): | |
| for comparator in node.comparators: | |
| if isinstance(comparator, ast.Constant) and comparator.value == 2: | |
| led_logic = True | |
| if not wifi_connected: | |
| feedback.append("⛔️ WiFi connection not detected (-2 pts).") | |
| grade -= 2 | |
| else: | |
| feedback.append("✅ WiFi connection established (+2 pts).") | |
| if not http_request_used: | |
| feedback.append("⛔️ HTTP GET request not detected (-2 pts).") | |
| grade -= 2 | |
| else: | |
| feedback.append("✅ HTTP GET request used (+2 pts).") | |
| if not json_parsed: | |
| feedback.append("⛔️ JSON response not parsed (-1 pt).") | |
| grade -= 1 | |
| else: | |
| feedback.append("✅ JSON response parsed (+1 pt).") | |
| if not time_sliced: | |
| feedback.append("⛔️ Time string not sliced to remove date (-1 pt).") | |
| grade -= 1 | |
| else: | |
| feedback.append("✅ Time string slicing detected (+1 pt).") | |
| if not led_setup: | |
| feedback.append("⛔️ Red LED not configured on pin 21 (-2 pts).") | |
| grade -= 2 | |
| else: | |
| feedback.append("✅ Red LED setup detected on pin 21 (+2 pts).") | |
| if not led_logic: | |
| feedback.append("⛔️ No condition found to check if metro is arriving in < 2 minutes (-2 pts).") | |
| grade -= 2 | |
| else: | |
| feedback.append("✅ Metro arrival condition (< 2 min) found (+2 pts).") | |
| except Exception as e: | |
| feedback = [f"⛔️ Error parsing code: {e}"] | |
| grade = 0 | |
| grade = max(0, grade) | |
| grade_str = f"{grade}/10" | |
| feedback_str = "\n".join(feedback) | |
| return grade_str, feedback_str | |
| # Interface Gradio seulement si le script est exécuté directement | |
| if __name__ == "__main__": | |
| with gr.Blocks(gr.themes.Default(primary_hue="cyan")) as demo: | |
| with gr.Row(): | |
| instructions = gr.Markdown(""" | |
| ## Instructions | |
| 1. Based on the examples you've seen so far, write a MicroPython code that follows the instructions above. | |
| 2. You can use the [Vittascience simulator](https://fr.vittascience.com/esp32/?mode=code&console=bottom&toolbox=scratch&simu=1&board=basic-esp32) to test your code. | |
| 2. Click the "Grade" button to get a grade and feedback. | |
| 3. Make sure your code is well-structured and efficient. | |
| 4. When you're happy with your code, please upload your solution below to get graded. | |
| 6. Good luck! | |
| """, container=False) | |
| code = gr.Code(label="MicroPython code", language="python", value='import time\nimport network\nimport requests\n# Your code here', lines=24) | |
| with gr.Row(): | |
| feedback_output = gr.Textbox(label="Feedback", value="Click on the 'Grade' button to get feedback", interactive=False, scale=4) | |
| grade_output = gr.Textbox(label="Grade", interactive=False, value="0/10", scale=1) | |
| grade_btn = gr.Button("Grade", variant="primary") | |
| grade_btn.click(fn=grade, inputs=code, outputs=[grade_output, feedback_output], api_name="grade") | |
| demo.launch(show_error=False, allowed_paths=["/assets", "assets"], show_api=False) |