Think Python: How to Think Like a Computer Scientist

NoneType,   Fruitful    Functions   and Void    Functions

programmer-defined, Programmer-Defined  Types,  Glossary,   Time,   Object-

Oriented    Features,   Operator    Overloading,    Comparing   Cards

set,    Dictionary  Subtraction

str,    Values  and Types

tuple,  Tuples  Are Immutable

type checking, Checking Types

type conversion, Function Calls

type function, Debugging

type-based dispatch, Type-Based Dispatch, Polymorphism, Glossary

TypeError, A String Is a Sequence, Strings Are Immutable, Dictionaries and Lists,

Tuples Are Immutable, Variable-Length Argument Tuples, Format Operator,

Another Example, When I run the program I get an exception.

typewriter, turtle, Exercises

typographical error, Debugging

U

UnboundLocalError, Global Variables

underscore character, Variable Names

uniqueness, Exercises

Unix command, ls, Pipes

update, Updating Variables, Square Roots, Glossary

database,   Databases

global  variable,   Global  Variables

histogram,  Word    Histogram