dtoolkit.transformer.AppendTF

class dtoolkit.transformer.AppendTF(*args, **kwargs)

A transformer could append rows data to the end of caller.

See also

pandas.DataFrame.append

This transformer’s prototype method.

Examples

>>> import pandas as pd
>>> from dtoolkit.transformer import AppendTF
>>> df = pd.DataFrame(
...     [[1, 2], [3, 4]],
...     columns=list("AB"),
...     index=["x", "y"],
... )
>>> df
   A  B
x  1  2
y  3  4
>>> df2 = pd.DataFrame(
...     [[5, 6], [7, 8]],
...     columns=list("AB"),
...     index=["x", "y"],
... )
>>> tf = AppendTF(df2)
>>> tf.transform(df)
   A  B
x  1  2
y  3  4
x  5  6
y  7  8

With ignore_index set to True:

>>> tf = AppendTF(df2, ignore_index=True)
>>> tf.transform(df)
   A  B
0  1  2
1  3  4
2  5  6
3  7  8

Attributes

inverse_transform_method

Methods

fit(*_)	Fit transformer.
fit_transform(X[, y])	Fit to data, then transform it.
inverse_transform(X)	Undo transform to X.
set_output(*[, transform])	Set output container.
transform(X)	Transform X.
update_invargs(*args, **kwargs)	Inverse transform method argument entry.

transform_method