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: 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

add_column_from_str(name, values)

adds a column from series of str

Parameters
namestr

column name

valuesseries

any type, cast to numpy array

property array

object array of all columns

clear()None.  Remove all items from D.
get(k[, d])D[k] if k in D, else d.  d defaults to None.
property index_name

column name whose values can be used to index table rows

items()a set-like object providing a view on D’s items
iter_rows()
keys()a set-like object providing a view on D’s keys
property order

column order

pop(k[, d])v, remove specified key and return the corresponding value.

If key is not found, d is returned if given, otherwise KeyError is raised.

popitem()(k, v), remove and return some (key, value) pair

as a 2-tuple; but raise KeyError if D is empty.

setdefault(k[, d])D.get(k,d), also set D[k]=d if k not in D
take_columns(columns)

returns new Columns instance with just columns

to_dict()

returns column based dict

to_rich_dict()
update([E, ]**F)None.  Update D from mapping/iterable E and F.

If E present and has a .keys() method, does: for k in E: 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()an object providing a view on D’s values