In [41]: df = DataFrame({"A": [1, 2, 3], "B": [2, 3, 4]})
In [42]: df['C'] = pd.date_range('2014-01-01', periods=3, freq='m')
In [43]: df
Out[43]:
A B C
0 1 2 2014-01-31
1 2 3 2014-02-28
2 3 4 2014-03-31
In [44]: df[['C']].quantile(.5)
---------------------------------------------------------------------------
ValueError Traceback (most recent call last)
<ipython-input-44-1e5bdc20c0ca> in <module>()
----> 1 df[['C']].quantile(.5)
/Users/tom/Envs/pandas-dev/lib/python2.7/site-packages/pandas/pandas/core/frame.pyc in quantile(self, q, axis, numeric_only)
4192 quantiles = [[f(vals, x) for x in per]
4193 for (_, vals) in data.iteritems()]
-> 4194 result = DataFrame(quantiles, index=data._info_axis, columns=q).T
4195 if len(is_dt_col) > 0:
4196 result[is_dt_col] = result[is_dt_col].applymap(lib.Timestamp)
/Users/tom/Envs/pandas-dev/lib/python2.7/site-packages/pandas/pandas/core/frame.pyc in __init__(self, data, index, columns, dtype, copy)
253 else:
254 mgr = self._init_ndarray(data, index, columns, dtype=dtype,
--> 255 copy=copy)
256 elif isinstance(data, collections.Iterator):
257 raise TypeError("data argument can't be an iterator")
/Users/tom/Envs/pandas-dev/lib/python2.7/site-packages/pandas/pandas/core/frame.pyc in _init_ndarray(self, values, index, columns, dtype, copy)
365 columns = _ensure_index(columns)
366
--> 367 return create_block_manager_from_blocks([values.T], [columns, index])
368
369 @property
/Users/tom/Envs/pandas-dev/lib/python2.7/site-packages/pandas/pandas/core/internals.pyc in create_block_manager_from_blocks(blocks, axes)
3183 blocks = [getattr(b, 'values', b) for b in blocks]
3184 tot_items = sum(b.shape[0] for b in blocks)
-> 3185 construction_error(tot_items, blocks[0].shape[1:], axes, e)
3186
3187
/Users/tom/Envs/pandas-dev/lib/python2.7/site-packages/pandas/pandas/core/internals.pyc in construction_error(tot_items, block_shape, axes, e)
3164 raise e
3165 raise ValueError("Shape of passed values is {0}, indices imply {1}".format(
-> 3166 passed,implied))
3167
3168
ValueError: Shape of passed values is (0, 0), indices imply (1, 0)
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