all Python 3Exceptionsexception

copy.Error

module exceptions

Raised by the copy module when an object cannot be copied.

Syntax

raise copy.Error

Catching this alone is not enough: most uncopyable objects (sockets, locks, open files) fail with TypeError from the pickle machinery, and copy.Error is left for objects that define neither __copy__/__deepcopy__ nor __reduce_ex__. So when copying objects you did not write, catch copy.Error and TypeError together — or simply do not copy anything that holds an external resource.

Examples

import copy
try:
    raise copy.Error
except copy.Error as e:
    print(type(e).__name__)   # → Error

See also

Open in the full glossarydocs.python.orgReport an inaccuracy