tft.coders.CsvCoder

A coder to encode CSV formatted data.

tft.coders.CsvCoder(
    column_names,
    schema,
    delimiter=',',
    secondary_delimiter=None,
    multivalent_columns=None
)

Args
column_names	Tuple of strings. Order must match the order in the file.
schema	A Schema proto.
delimiter	A one-character string used to separate fields.
secondary_delimiter	A one-character string used to separate values within the same field.
multivalent_columns	A list of names for multivalent columns that need to be split based on secondary delimiter.

Raises
ValueError	If schema is invalid.

Methods

encode

View source

encode(
    instance
)

Encode a tf.transform encoded dict to a csv-formatted string.

Args
instance	A python dictionary where the keys are the column names and the values are fixed len or var len encoded features.

Returns
A csv-formatted string. The order of the columns is given by column_names.