Strings, Lists & Tuples

These flashcards cover key concepts regarding strings, lists, and tuples in Python programming, including definitions, properties, and functionalities.

What is a data structure?

A data type whose components are smaller data structures and/or simple data types.

What are the three data structures covered in this unit?

String, List, and Tuple.

What is the difference between mutable and immutable?

Mutable can change; immutable cannot change.

What is a string in Python?

A sequence of characters that cannot be changed.

What is a list in Python?

A sequence of elements that can be any data type and can be changed.

What is a tuple in Python?

A sequence of elements that can be any data type and cannot be changed.

How do you concatenate strings in Python?

Using the + operator.

How do you access individual elements in a string?

Using the index operator [ ] with the element's numerical index.

What does the len function do?

It returns the number of characters in a string or the number of elements in a list.

Can a list contain other lists?

Yes, a list can be a list of lists.

What happens if you attempt to change a string variable?

The string will be replaced and not changed because strings are immutable.

What is the significance of the index 0 in sequences?

It is the index of the first element in any sequence.

What is string slicing?

Extracting substrings from strings using the index operator with a colon [ : ].

Can you create multi-dimensional lists or tuples in Python?

Yes, both lists and tuples can be multi-dimensional.

What distinguishes a list from a tuple in Python?

Lists are mutable and can be changed; tuples are immutable and cannot be changed.