Running python script using Arduino I am trying to use Process.h library to run a shell command. Here is my code. I am using Arduino Uno.

#include &lt;Process.h&gt;
#include &lt;Bridge.h&gt;

void setup() {
  // Initialize Bridge
  //Bridge.begin(115200);

  // Initialize Serial
  Serial.begin(115200);

  // Wait until a Serial Monitor is connected.
  while (!Serial);

  // run various example processes
  runPythonFunction();
}

void loop() {
  // Do nothing here.
}


void runPythonFunction() {

  Process p;        // Create a process and call it "p"
  //p.begin("/usr/bin/python /home/kairos/Arduino/codes/sketch_jan26a/tweet.py");
  p.runShellCommandAsynchronously("/usr/bin/python -U /path/to/tweet.py");      // Run the process and wait for its termination
  //p.run();
  // Print command output on the SerialUSB.
  // A process output can be read with the stream methods
  while(p.available() &gt; 0) {
     char c = p.read();
    Serial.print(c);
  }
  // Ensure the last bit of data is sent.
  Serial.flush();
  delay(300000);
}


If I do not comment the Bridge.begin() line, then in monitor display reverse question marks are displayed. And after commenting that, I am getting some garbage on the serial monitor. Also, my python script makes a new file in the same directory, which runs fine if I run it using a terminal. But if I run it using Arduino code, I am not able to see that new file being generated. 

Even using p.begin() and p.run()it does not run. Nor using p.runShellCommandAsynchronously().

So how can I run that python script?
The Uno cannot run python.

The Bridge library is intended for communication either between the two MCUs of the Yun, or between an Arduino board and the MCU on a Yun shield.

It is literally a Bridge between the two systems - Arduino and the Linux system in the Yun.