[Python] Typecheck expects pandas to be installed

[asfimport]

See nightly build failure: https://circleci.com/gh/ursa-labs/crossbow/4285?utm_campaign=vcs-integration-link&utm_medium=referral&utm_source=github-build-link

The following patch fixes it:

diff --git a/python/pyarrow/table.pxi b/python/pyarrow/table.pxi
index b65dac4cb..e0a82fd76 100644
--- a/python/pyarrow/table.pxi
+++ b/python/pyarrow/table.pxi
@@ -17,6 +17,7 @@

 import warnings

+
 cdef class ChunkedArray(_PandasConvertible):
     """
     Array backed via one or more memory chunks.
@@ -1579,7 +1580,7 @@ def record_batch(data, names=None, schema=None, metadata=None):
     if isinstance(data, (list, tuple)):
         return RecordBatch.from_arrays(data, names=names, schema=schema,
                                        metadata=metadata)
-    elif isinstance(data, _pandas_api.pd.DataFrame):
+    elif _pandas_api.is_data_frame(data):
         return RecordBatch.from_pandas(data, schema=schema)
     else:
         return TypeError("Expected pandas DataFrame or python dictionary")

Reporter: Krisztian Szucs / @kszucs
Assignee: Joris Van den Bossche / @jorisvandenbossche

PRs and other links:

• GitHub Pull Request #5764

_{Note: This issue was originally created as ARROW-7039. Please see the migration documentation for further details.}

[asfimport]

Krisztian Szucs / @kszucs:
cc @jorisvandenbossche

[asfimport]

Joris Van den Bossche / @jorisvandenbossche:
Ah, this was probably never covered by the tests before .. Thanks for the note, will do a quick PR!

[asfimport]

Krisztian Szucs / @kszucs:
Issue resolved by pull request 5764
#5764