# How to Think Like a Computer Scientist: The PreTeXt Interactive Edition

## Section18.5Glossary

### GlossaryGlossary

deep copy
To copy the contents of an object as well as any embedded objects, and any objects embedded in them, and so on; implemented by the deepcopy function in the copy module.
deep equality
Equality of values, or two references that point to objects that have the same value.
shallow copy
To copy the contents of an object, including any references to embedded objects; implemented by the copy function in the copy module.
shallow equality
Equality of references, or two references that point to the same object.