# cfdm.Index.copy¶

Index.copy(data=True)[source]

Return a deep copy.

f.copy() is equivalent to copy.deepcopy(f).

Arrays within Data instances are copied with a copy-on-write technique. This means that a copy takes up very little extra memory, even when the original contains very large data arrays, and the copy operation is fast.

New in version (cfdm): 1.7.0

Parameters
data: bool, optional

If True (the default) then copy data, else the data is not copied.

Returns
Index

The deep copy.

Examples

>>> g = f.copy()
>>> g = f.copy(data=False)
>>> g.has_data()
False