Strings

Question 1

What programs use string to perform operations?

Answer 1

search engines, emails

Question 2

How to iterate over a string= “AMANDA”

Answer 2

for count in string:

print count

Question 3

How can you access individual characters with a string?

Answer 3

via index

Question 4

Indexing starts at ?

Answer 4

0

Question 5

provide an example of index

Answer 5

name = “Sakura”
name[2]
k

Question 6

Negative numbers in index starts with?

example

Answer 6

-1
for instance: name =”Sakura”
name[-1] = “a”
name[-2] =”r”

Question 7

what error does this give?
name =”AVA”
name[4]

Answer 7

IndexError Exception

Question 8

How do you find the length of a string?

name = “Sakura”

Answer 8

len(name)

Question 9

How do you concatinate two or more strings?

Answer 9

use the + operator

Question 10

You can also use what to concatinate? Demonstrate

Answer 10

\+=
a ="av"
a+="a"
print (a)
ava

Question 11

Strings are mutable or immutable. Why?

Answer 11

Immutable. Cannot be changed.
a= "a"
a += "va"
in the memory its
a
ava

Question 12

Can you do this? Why? Why not?
name =”ava”
name[0] =”f”

Answer 12

No cause strings are immutable.

Question 13

What is slicing used for?

Answer 13

to select a range of characters from a string

Question 14

String slices are also called

Answer 14

substrings

Question 15

Syntax for slicing

Answer 15

string [start:end]

Question 16

How to find strings

Answer 16

With in or not in operators

Question 17

whitespaces are :

Answer 17

\n , \t and space

Question 18

testing alphanumeric

Answer 18

isalnum()

Question 19

testing alphabets

Answer 19

isalpha()

Question 20

testing lower

Answer 20

islower()

Question 21

testing upper

Answer 21

isupper()

Question 22

testing digits only

Answer 22

isdigit()

Question 23

tessting whitespaces

Answer 23

isspace()

Question 24

Write syntax for finding:

end, start, find,replace

Answer 24

endswith(substring)
find(substring)
startswith(substring)
replace(old,new)

Question 25

How to make repetition in a string

Answer 25

string = “an”

string * 4

Question 26

String =”one two”

How to split them?

Answer 26

String.split()

Question 27

By default what is the separater?

Answer 27

space

Question 28

What if you need to separate this?

name =”any/who/out”

Answer 28

name.split(‘/’)