dataiter.DataFrameColumn

__init__() nrow

class dataiter.DataFrameColumn(object, dtype=None, nrow=None)

A column in a data frame.

DataFrameColumn is a subclass of Vector. See the vector documentation for relevant properties and methods.

__init__(object, dtype=None, nrow=None)

Return a new data frame column.

dtype is the NumPy-compatible data type for the vector. Providing dtype will make creating the vector faster, otherwise the appropriate data type will be guessed by introspecting the elements of object, which is potentially slow, especially for large objects.

If provided, nrow is the row count to produce, i.e. the length to which object will be broadcast.

>>> di.DataFrameColumn([1, 2, 3], int)
[ 1 2 3 ] int64
>>> di.DataFrameColumn([1], int, nrow=10)
[ 1 1 1 1 1 1 1 1 1 1 ] int64

property nrow

Return the amount of rows.