Strings & Text

Question 1

What is a string?

Answer 1

a sequence of characters

Question 2

what are characters?

Answer 2

letters, numbers, punctuation marks, spaces

Question 3

How are string literals specified

Answer 3

enclosing a sequence on characters with either single or double quotations

Question 4

why are both double and single quotations able to be used?

Answer 4

able to use apostrophe or quotation marks within the string

Question 5

what is string length?

Answer 5

number of characters in a string

Question 6

what is the string length function?

Answer 6

len()

Question 7

how can you convert numbers into a string?

Answer 7

str()

Question 8

what is string concatenation?

Answer 8

adding one string onto the end of another with “+”

Question 9

how do you follow nested function calls?

Answer 9

start from inner most to outermost function and substitute values

Question 10

what is operator overloading? what is an example of it?

Answer 10

operator performs different functions of variables of different types (ex. ‘+’, ‘*’)

Question 11

what is string repetition function?

Answer 11

“*” repeats a string as many times as indicated:

dashes = “-“*4
–> output: —-

Question 12

why is it important to have the str() function?

Answer 12

you can now combine numbers with strings (49ers)

Question 13

what does python use for characters?

Answer 13

unicode –> characters are stored as integer values

Question 14

what is an index number?

Answer 14

the character’s assigned number, starting with 0

Question 15

what is index number operator?

Answer 15

[ ]

Question 16

what is an object?

Answer 16

software entity that represents a value with certain behaviour
–> string, graphical window, data file

Question 17

what are methods?

Answer 17

behaviour of an object - similar to a function

Question 18

how is a method different from a string?

Answer 18

methods can only be applied to an object of the type for which it was defined while functions are general and can accept arguments of different types

Question 19

how do you print a double quote?

Answer 19

before each “ put a “" for the quotation inside

Question 20

how do you print a backslash?

Answer 20

before \ print another \

Question 21

do do you output a new line?

Answer 21

\n