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Create app.py
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app.py
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| 1 |
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from flask import Flask, request, render_template_string
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import subprocess
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import sys
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import os
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from io import StringIO
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import contextlib
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app = Flask(__name__)
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# HTML template for the code input and output display
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HTML_TEMPLATE = """
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<!DOCTYPE html>
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<html>
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<head>
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<title>Python Code Runner</title>
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<style>
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body { font-family: Arial, sans-serif; margin: 20px; }
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textarea { width: 100%; height: 300px; }
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pre { background: #f4f4f4; padding: 10px; border: 1px solid #ddd; }
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.error { color: red; }
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</style>
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</head>
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<body>
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<h1>Python Code Runner</h1>
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<form method="POST" action="/">
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<textarea name="code" placeholder="Paste your Python code here">{{ code }}</textarea><br>
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<input type="submit" value="Run Code">
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</form>
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{% if output %}
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<h2>Output:</h2>
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<pre>{{ output }}</pre>
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{% endif %}
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{% if error %}
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<h2 class="error">Error:</h2>
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<pre class="error">{{ error }}</pre>
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{% endif %}
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</body>
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</html>
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"""
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@app.route("/", methods=["GET", "POST"])
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def run_code():
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code = ""
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output = ""
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error = ""
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if request.method == "POST":
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code = request.form.get("code", "")
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# Write the code to a temporary file
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temp_file = "temp_code.py"
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with open(temp_file, "w") as f:
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f.write(code)
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try:
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# Run the code in a subprocess with restricted environment
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result = subprocess.run(
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[sys.executable, temp_file],
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capture_output=True,
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text=True,
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timeout=10 # Limit execution time to 10 seconds
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)
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output = result.stdout
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error = result.stderr
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except subprocess.TimeoutExpired:
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error = "Execution timed out after 10 seconds."
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except Exception as e:
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error = f"An error occurred: {str(e)}"
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finally:
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# Clean up the temporary file
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if os.path.exists(temp_file):
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os.remove(temp_file)
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return render_template_string(HTML_TEMPLATE, code=code, output=output, error=error)
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if __name__ == "__main__":
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app.run(debug=True, host="0.0.0.0", port=5000)
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