9.21. Glossary
- collection data type
 
- A data type in which the values are made up of components, or elements,
that are themselves values.
 
- default value
 
- The value given to an optional parameter if no argument for it is
provided in the function call.
 
- dot notation
 
- Use of the dot operator, 
., to access functions inside a
module, or to access methods and attributes of an object. 
- immutable
 
- A compound data type whose elements can not be assigned new values.
 
- index
 
- A variable or value used to select a member of an ordered collection, such as
a character from a string, or an element from a list.
 
- optional parameter
 
- A parameter written in a function header with an assignment to a
default value which it will receive if no corresponding argument is
given for it in the function call.
 
- slice
 
- A part of a string (substring) specified by a range of indices. More
generally, a subsequence of any sequence type in Python can be created
using the slice operator (
sequence[start:stop]). 
- traverse
 
- To iterate through the elements of a collection, performing a similar
operation on each.
 
- whitespace
 
- Any of the characters that move the cursor without printing visible
characters. The constant 
string.whitespace contains all the
white-space characters. 
 
  
      
  
    
      
    
  
  
  
  
    
      
    
  
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