getting a pyserial not loaded error
- by skinnyTOD
I'm getting a "pyserial not loaded" error with the python script fragment below (running OSX 10.7.4). I'm trying to run a python app called Myro for controlling the Parallax Scribbler2 robot - figured it would be a fun way to learn a bit of Python - but I'm not getting out of the gate here.
I've searched out all the Myro help docs but like a lot in-progress open source programs, they are a moving target and conflicting, out of date, or not very specific about OSX.
I have MacPorts installed and installed py27-serial without error. MacPorts lists the python versions I have installed, along with the active version:
Available versions for python:
none
python24
python25
python25-apple
python26
python26-apple
python27
python27-apple (active)
python32
Perhaps stuff is getting installed in the wrong places or my PATH is wrong (I don't much know what I am doing in Terminal and have probably screwed something up).
Trying to find out about my sys.path - here's what I get:
import sys
sys.path
['', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip',
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7',
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin',
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac',
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages',
'/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python',
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk',
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old',
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload',
'/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC',
'/Library/Python/2.7/site-packages']
Is that a mess? Can I fix it?
Anyway, thanks for reading this far. Here's the python bit that is throwing the error. The error occurs on 'try import serial'.
# Global variable robot, to set SerialPort()
robot = None
pythonVer = "?"
rbString = None
ptString = None
statusText = None
# Now, let's import things
import urllib
import tempfile
import os, sys, time
try:
import serial
except:
print("WARNING: pyserial not loaded: can't upgrade!")
sys.exit()
try:
input = raw_input # Python 2.x
except:
pass # Python 3 and better, input is defined
try:
from tkinter import *
pythonver = "3"
except:
try:
from Tkinter import *
pythonver = "2"
except:
pythonver = "?"
