Python: IOError: [Errno 13] Permission denied error? Privacy setting?

Question

I am trying to run the code as listed on Github, https://github.com/duytinvo/ijcai2015 . However, after running the command: python targetdep+.py, I received the following error:

IOError: [Errno 13] Permission denied: '../data/output/training'

This is the part of the code that caused the error:

def writevec(filename,x,y):
f=open(filename,'wb')
for i in xrange(len(y)):
    f.write(str(y[i])+'\t')
    feature=x[i]
    for (j,k) in enumerate(feature):
        f.write(str(j+1)+':'+str(k)+' ')
    f.write('\n')
f.close() 

if __name__ == "__main__":
    features=targettw()
    print "extracting features for training"
    x_train,y_train=features.allfeat('../data/training/')
    writevec('../data/output/training',x_train,y_train)
    print "extracting features for testing"
    x_test,y_test=features.allfeat('../data/testing/')
    writevec('../data/output/testing',x_test,y_test)

Anyone knows what have I done wrongly? How can I resolve this error? Thanks in advance!

Answer 1

There is a limit in Windows on how long directory/file-names can be in order to open them. Having a too long name will cause weird problems.

If this is the case, here is a good explanation: Why does the 260 character path length limit exist in Windows?

I'd suggest you move your project or the output dir somewhere else, for intsance to r'C:\\Users\\NANA\\Desktop\\output' and see if that helps.

This solution comes from comments above and might or might not solve the OP's problem but could be useful for others with similra "odd" issues.