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8.12: Glossary

  • Page ID
    41966
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    object:
    Something a variable can refer to. For now, you can use “object” and “value” interchangeably.
    sequence:
    An ordered collection of values where each value is identified by an integer index.
    item:
    One of the values in a sequence.
    index:
    An integer value used to select an item in a sequence, such as a character in a string. In Python indices start from 0.
    slice:
    A part of a string specified by a range of indices.
    empty string:
    A string with no characters and length 0, represented by two quotation marks.
    immutable:
    The property of a sequence whose items cannot be changed.
    traverse:
    To iterate through the items in a sequence, performing a similar operation on each.
    search:
    A pattern of traversal that stops when it finds what it is looking for.
    counter:
    A variable used to count something, usually initialized to zero and then incremented.
    invocation:
    A statement that calls a method.
    optional argument:
    A function or method argument that is not required.

    This page titled 8.12: Glossary is shared under a CC BY-NC 3.0 license and was authored, remixed, and/or curated by Allen B. Downey (Green Tea Press) .

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