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Python String Operators

Question 1

Which method is used to find the index of the first occurrence of a substring in a string?

find()

index()

search()

locate()

Question 2

What is the output of the following expression?

Python[1:4]

Pyt

yth

ytho

ytha

Question 3

Which method is used to check if a string contains only numeric characters?

isdigit()

isalpha()

isnumeric()

isnumber()

Question 4

Which operator can be used to concatenate two strings in python?

+

-

*

/

Question 5

What dose the following string method do?

hello world.split()

Splits the string into a list of words: ['hello,'world']

Splits the string into individual characters: ['h', 'e', 'I' ,'I' ,'o' ,'w' ,'o' ,'r' 'I' ,'d'] ,

Joins the list elements with spaces: "hello world"

Removes all whitespace from the string: "helloworld"

Question 6

What does the following expression do?

hello*3

Repeats the string three times: hellohellohello.

Raises an error since strings cannot be multiplied.

Returns the first three characters of the strig: hel.

Multiplies each character of the string by 3: hhheeellllllooo.

Question 7

What is the result of the following expression?

abc+str(123)

abc123

abcstr(123)

Error: cannot concatenate a string and an interger directly.

Error cannot convert an integer to a string.

Question 8

Which method can be used to replace a specific substring with another substring in a string?

replace()

swap()

modify()

update()

Question 9

What does the following string method do?

HELLO.lower()

Converts the string to lowercase: hello.

Converts the string to uppercase: HELLO.

Reverses the string: OLLEH.

Returns an error since strings are already in uppercase.

Question 10

How can you extract a substring from a string with the index range [start:end]?

string[start:end].

string.extract(start,end).

string.substring(start,end).

string.get(start,end).

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