cannot find package "grumpy/lib/io" #81

I am using the python io libraries to read and write files in py python script and I'm getting an erorr trying to import io. Below is a simplified version that demonstrates the error. Is the python io library supported?

$ echo "import io" | make run
/tmp/tmpdlxl4K.go:4:2: cannot find package "grumpy/lib/io" in any of:
/usr/local/go/src/grumpy/lib/io (from $GOROOT)
/opt/home/daden/dev/grumpy/build/src/grumpy/lib/io (from $GOPATH)
Makefile:78: recipe for target 'run' failed
make: *** [run] Error 1