cogent3.core.table.Columns

class Columns

Collection of columns. iter operates over columns.

Attributes:

array

object array of all columns

index_name

column name whose values can be used to index table rows

order

column order

Methods

add_column_from_str(name, values)	adds a column from series of str
clear()
get(k[,d])
items()
keys()
pop(k[,d])	If key is not found, d is returned if given, otherwise KeyError is raised.
popitem()	as a 2-tuple; but raise KeyError if D is empty.
setdefault(k[,d])
take_columns(columns)	returns new Columns instance with just columns
to_dict()	returns column based dict
update([E, ]**F)	If E present and has a .keys() method, does: for k in E.keys(): D[k] = E[k] If E present and lacks .keys() method, does: for (k, v) in E: D[k] = v In either case, this is followed by: for k, v in F.items(): D[k] = v
values()

iter_rows
to_rich_dict