INDEX 253
userfile.py, 58
usernamegeneration
program,44, 58
username.py, 44
validation
ofinputs, 135
valuereturningfunction, 95
variable
changingvalue, 18
definitionof, 9
instance,67, 161
local, 92
scope, 92
VGA, 72
volleyball,133, 158
wc, 62
whilestatement
aspost-testloop, 135
flow chart, 125
semantics, 124
syntax, 124
whitespace,seespace
widget,77, 172
width, 53
windchill, 140
winter, 85
wordcount, 62
wordfrequency
problemdescription, 201
program, 204
wordfreq.py, 204
write, 57