Py Object Types

Question 1

Tuples, what is a Tuple suitable for?

Answer 1

to use as a key, since they are immutable

Question 2

Tuples, how to find out a Tuple’s values?

Answer 2

Use the same functions as for lists,

]] < tuple_name > [ range_from : range_to ]

Question 3

Mutable, which object types are mutable?

Answer 3

Lists, Dictionaries

Question 4

Immutable, which object types are immutable?

Answer 4

Strings, Tuples

Question 5

Dict, what is a Dict useful for?

Answer 5

Looking things up

Question 6

Dict, what is a nested Dict?

Answer 6

A Dict having a Dict for Values belonging to the Key. It becomes very similar to a table

Question 7

Dict, how can Values be referenced in a nested Dict?

Answer 7

]] for key, value in countries.items[ ]
]] print( f’ { value[ ‘capital’ ] } is the capital of
]] { key } in which they speak the language of
]] { value[ ‘capital’ ] }

Question 8

Dict, what is a Dict comprehension and how is it expressed?

Answer 8

]] new_dict = dict( counter( sherlock_holmes() )
]] new_dict = { k:v for k,v in new_dict.items{ } if
]] k.isalpha() }
– creates a new DIct only including values being
– alphanumeric

Question 9

List, what is a List comprehension and how is it expressed?

Answer 9

]] L = [ x**2 for x in range( 1,11 ]

• • creates a list with values in power of the numbers
• • specified in the range, excluding 11