TableColumns

class astropy.table.TableColumns(cols={})

Bases: collections.OrderedDict

OrderedDict subclass for a set of columns.

This class enhances item access to provide convenient access to columns by name or index, including slice access. It also handles renaming of columns.

The initialization argument cols can be a list of Column objects or any structure that is valid for initializing a Python dict. This includes a dict, list of (key, val) tuples or [key, val] lists, etc.

Parameters

colsdict, list, tuple; optional

Column objects as data structure that can init dict (see above)

Methods Summary

isinstance(self, cls)	Return a list of columns which are instances of the specified classes.
keys(self)
not_isinstance(self, cls)	Return a list of columns which are not instances of the specified classes.
values(self)

Methods Documentation

isinstance(self, cls)

Return a list of columns which are instances of the specified classes.

Parameters

clsclass or tuple of classes

Column class (including mixin) or tuple of Column classes.

Returns

col_listlist of Columns

List of Column objects which are instances of given classes.

keys(self)

not_isinstance(self, cls)

Return a list of columns which are not instances of the specified classes.

Parameters

clsclass or tuple of classes

Column class (including mixin) or tuple of Column classes.

Returns

col_listlist of Columns

List of Column objects which are not instances of given classes.

values(self)