AttributeError: module 'pandas.compat' has no attribute 'string_types'

[badiku]

today I got this error:
AttributeError: module 'pandas.compat' has no attribute 'string_types'

and the code is here:

streamz/streamz/dataframe/core.py

Line 248 in f9b4ce3

if (isinstance(c, pd.compat.string_types) and pd.compat.isidentifier(c)))

the problem is , there's no pd.compat.string_types now.

pandas removed it at Mar 29, 2019, see here:
pandas-dev/pandas#25903

[martindurant]

Missed this depr, thanks for posting.
Should be changed to

if (isinstance(c, str) and c.isidentifier()))

Would you care to submit this fix as a PR?

[martindurant]

(also a test which uses dir() on a dataframe would be useful, as this should have been caught before)