pySerial write won t take my string

Question

Using Python 3 3 and pySerial for serial communications   I m trying to write a command to my COM PORT but the write method won t take my string   Most of the code is from here Full examples of using pySerial package  What s going on   import time import serial   ser   serial Serial      port         COM4       baudrate 115200      parity serial PARITY ODD      stopbits serial STOPBITS ONE      bytesize serial EIGHTBITS   if ser isOpen        ser close   ser open   ser isOpen    ser write   01 RDD0010000107   r   out        let s wait one second before reading output  let s give device time to answer  time sleep 1  while ser inWaiting    gt  0      out    ser read 40   if out            print   gt  gt     out    ser close     Error is at ser write   01 RDD0010000107   r   where it gets  Traceback is like this data   to bytes data  b append item  TypeError  an integer is required

User · Answer

I had the same  TypeError   an integer is required  error message when attempting to write  Thanks  the  encode   solved it for me  I m running python 3 4 on a Dell D530 running 32 bit Windows XP Pro   I m omitting the com port settings here    gt  gt  gt import serial   gt  gt  gt ser   serial Serial 5    gt  gt  gt ser close     gt  gt  gt ser open     gt  gt  gt ser write  1  encode     1   gt  gt  gt

User · Answer

You have found the root cause  Alternately do like this   ser write bytes b your commands

User · Answer

It turns out that the string needed to be turned into a bytearray and to do this I editted the code to   ser write   01 RDD0010000107   r  encode      This solved the problem

[python] pySerial write() won't take my string

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