hash_pandas_object fails on empty dataframe with index=False #24318
Description
In [8]: df = pd.DataFrame(index=pd.Index([1, 2, 3])) In [9]: pd.util.hash_pandas_object(df, index=False) --------------------------------------------------------------------------- ValueError Traceback (most recent call last) <ipython-input-9-23d57ac9e66b> in <module> ----> 1 pd.util.hash_pandas_object(df, index=False) ~/sandbox/pandas/pandas/core/util/hashing.py in hash_pandas_object(obj, index, encoding, hash_key, categorize) 112 h = _combine_hash_arrays(hashes, num_items) 113 --> 114 h = Series(h, index=obj.index, dtype='uint64', copy=False) 115 else: 116 raise TypeError("Unexpected type for hashing %s" % type(obj)) ~/sandbox/pandas/pandas/core/series.py in __init__(self, data, index, dtype, name, copy, fastpath) 244 'Length of passed values is {val}, ' 245 'index implies {ind}' --> 246 .format(val=len(data), ind=len(index))) 247 except TypeError: 248 pass ValueError: Length of passed values is 0, index implies 3I'm not sure what to do here. I think that the output should have the same shape / index. Passing index=False means don't include the index in the hashed value. But the output should retain the same index.