Github user icexelloss commented on the issue:
https://github.com/apache/spark/pull/21427
I think so:
```
>>> type(pd.DataFrame({'1': [1], '2': [2]}).columns)
<class 'pandas.core.indexes.base.Index'>
>>> type(pd.DataFrame([[1, 2.0, "hello"]]).columns)
<class 'pandas.core.indexes.range.RangeIndex'>
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