title: .append() method with pyserial and arduino gives me ridiculous output
body: <p>I' m basically trying to get voltage from arduino, and make an array from them. </p>
  
  <p>Arduino code is below:</p>
  
  <pre><code>void setup() {
  
  Serial.begin(9600);
  
  }
  
  void loop() {
  
  int sensorValue = analogRead(A0);
  float voltage = sensorValue*(5.0/1023);
  
  Serial.println(voltage);
  }
  </code></pre>
  
  <p>On serial monitor, everything seems fine.</p>
  
  <p>When i try to make an array with python, used this code:</p>
  
  <pre><code>import serial
  ser = serial.Serial("COM5", 9600)
  
  voltage = [] 
  
  while True:
      volt = ser.readline()
  
      voltage.insert(volt)
      print voltage
  </code></pre>
  
  <p>Just gave me something but not an array from voltage measurements. I also tried .apppend() and .extend(), same results. </p>