from flask import Flask, request, render_template_string, send_file
import subprocess
import sys
import os
app = Flask(__name__)
HTML_TEMPLATE = """
Python Code Runner
Python Code Runner
{% if warning %}
Warning:
{{ warning }}
{% endif %}
{% if output %}
Output:
{{ output }}
{% endif %}
{% if error %}
Error:
{{ error }}
{% endif %}
{{ iframe | safe }}
"""
@app.route("/", methods=["GET", "POST"])
def run_code():
code = ""
output = ""
error = ""
warning = ""
iframe = ""
if request.method == "POST":
code = request.form.get("code", "")
if "import toga" in code or "from toga" in code:
warning = ("Toga apps create GUI windows, which run on the server's virtual display. "
"View the GUI below (may take a moment to load). Download the code to run locally.")
iframe = ''
temp_file = "temp_code.py"
with open(temp_file, "w") as f:
f.write(code)
try:
result = subprocess.run(
[sys.executable, temp_file],
capture_output=True,
text=True,
timeout=5
)
output = result.stdout
error = result.stderr
except subprocess.TimeoutExpired:
error = "Execution timed out after 5 seconds."
except Exception as e:
error = f"An error occurred: {str(e)}"
finally:
if os.path.exists(temp_file):
os.remove(temp_file)
return render_template_string(HTML_TEMPLATE, code=code, output=output, error=error, warning=warning, iframe=iframe)
@app.route("/download")
def download_code():
code = request.args.get("code", "")
temp_file = "toga_app.py"
with open(temp_file, "w") as f:
f.write(code)
return send_file(temp_file, as_attachment=True)
if __name__ == "__main__":
app.run(debug=False, host="0.0.0.0", port=5000)