Basic Functionality of the Pandas Series

- Attribute or Method in a Pandas DataFrame object:
  `T` = return the transpose `axes` = the list of the row and column axis labels `dtypes` = the data types of the object stored in each column of the dataframe. `empty` = `True` if the series is empty. `ndim` = the # axes (= # columns) `shape` = a tuple representing the dimensionality of the DataFrame. `values` = returns the data in a `Numpy` (2 dim) `ndarray`. `head(n)` = returns the first `n` rows (default `n = 5`). `tail(n)` = returns the last `n` rows (default `n = 5`).

DEMO: `progs/df06.py`

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