Add first version of the game file

app.py

@@ -4,12 +4,30 @@ import subprocess
 # Create an input text box
 input_text = st.text_input('Enter some text')
 
-# Launch a subprocess and pass the input text as an argument
-proc = subprocess.Popen(['python', 'danse_macabre.py'], stdout=subprocess.PIPE)
-
-# Listen to the output of the subprocess and display it
-while True:
-    line = proc.stdout.readline().decode('utf-8').strip()
-    if not line:
-        break
-    st.write(line)
+def start(executable_file):
+    return subprocess.Popen(
+        executable_file,
+        stdin=subprocess.PIPE,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE)
+
+
+def read(process):
+    return process.stdout.readline().decode("utf-8").strip()
+
+
+def write(process, message):
+    process.stdin.write(f"{message.strip()}\n".encode("utf-8"))
+    process.stdin.flush()
+
+
+def terminate(process):
+    process.stdin.close()
+    process.terminate()
+    process.wait(timeout=0.2)
+
+
+process = start("./dummy.py")
+write(process, "hello dummy")
+st.write(read(process))
+terminate(process)