Github user bustios commented on the issue:
https://github.com/apache/zeppelin/pull/1343
@agoodm your solution looks good, but the `import io` is going to generate
an error in the `show_dataframe` method for Python 2. Running the tests can
help you to catch this error. It would be better to use:
```python
from io import BytesIO
```
before (and not to delete):
```python
try:
import StringIO as io
except ImportError:
import io as io
```
another option could be:
```python
from io import BytesIO
try:
from StringIO import StringIO
except ImportError:
from io import StringIO
```
and replage `io.StringIO` by `StringIO`.
Personally, I prefer the second option because it has the advantage of
avoiding the `io` package to be hidden by `import StringIO as io` for future
use.
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