Python for Data Analysis Quiz -5

What is the output of the following code?

```python

string = "Hello, world!"

print(string[7:12])

```

• A) world

• B) , wor

• C) world!

• D) Hello

Which of the following strings is correctly enclosed using single quotes?

• A) "This is a string"

• B) 'Another string'

• C) `Yet another string`

• D) '''String with triple single quotes'''

What is the length of the string "GPT-3.5 is amazing."?

• A) 13

• B) 15

• C) 17

• D) 18

Which string method can be used to convert a string to uppercase letters?

• A) upper()

• B) capitalize()

• C) title()

• D) casefold()

What is the index of the first occurrence of the letter 'o' in the string "Coding is fun and challenging."?

• A) 4

• B) 6

• C) 8

• D) 10

Which of the following data structures in Python stores data in key-value pairs?

• A) List

• B) Tuple

• C) Set

• D) Dictionary

How are dictionary keys accessed in Python?

• A) Using indexes

• B) Using parentheses

• C) Using curly braces

• D) Using square brackets

What happens if you try to add a key that already exists in a dictionary?

• A) An error is raised

• B) The existing value for that key is replaced

• C) The dictionary remains unchanged

• D) The dictionary automatically resizes

Which method is used to remove a key-value pair from a dictionary in Python?

• A) popitem()

• B) remove()

• C) delete()

• D) pop()

What is the result of the following code snippet?

```python

student = {

"name": "Alice",

"age": 20,

"grade": "A"

}

student["school"] = "XYZ School"

print(len(student))

```

• A) 3

• B) 4

• C) 5

• D) 6