I am using pySerial to get data from an Arduino (micro-controller).
The data are stored in a pickle file. It worked fine with Blender 2.49 (python 2.7).
Now, shifting to Blender 2.56 (python 3.2), I get the following error:
f=open('abc.dat','r')
with serial.Serial('COM31',9600) as port :
for i in range(0, 10):
x = port.read开发者_高级运维(size=1)
print(int(x))
y=pickle.load(f)
f.close()
f=open('abc.dat','w')
y.append(i)
pickle.dump(y,f)
f.close()
port.close()
error:
Python script error from controller "Python Script#CONTR#1":
Traceback (most recent call last):
File "256script1.py", line 18, in <module>
f.close()
File "C:\PROGRA~1\BLENDE~1\Blender\2.54\python\lib\pickle.py", line 1365, in l
oad
encoding=encoding, errors=errors).load()
ValueError: read() from the underlying stream did notreturn bytes
Blender Game Engine Finished
Are there any operational changes in the use of pickle
?
You open the file in text mode, but for pickles it should be in binary mode. In Python 2 this doesn't matter (Except on Windows), but in Python 3 it does.
It should be
f=open('abc.dat','rb')
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