Question

what is the output of the following code?
my_dict = {
ame\: \alice\, \age\: 30}
print(my_dict.keys())

ame\,\age\
\alice\, 30
error
none of the above
question 19
which of the following is not a valid key in a dictionary?
string
integer
list
tuple

Explanation:

First question:

Step1: Analyze the keys() method

In Python, the keys() method of a dictionary returns a view object that displays a list of all the keys in the dictionary. For the dictionary my_dict = {"name": "Alice", "age": 30}, the keys are "name" and "age". However, in Python 3, the keys() method does not return a list. It returns a dict_keys object. But if we consider the concept (in older Python 2, it was more list - like in appearance), the intended answer (if we assume a more lenient view for educational purposes) is that it represents the keys. The options given have ["name", "age"] which is a wrong representation format (as it's not a list in Python 3, but if we consider the key - value concept). The other options: ["Alice", 30] are values, not keys. And there is no error.

Second question:

Step1: Recall dictionary key rules

In Python, dictionary keys must be hashable. Strings, integers, and tuples (if they contain only hashable elements) are hashable. Lists are not hashable because they are mutable (their content can be changed).

Answer:

First question: None of the above (because in Python 3, keys() returns a dict_keys object, not a list. But if we consider the key - value concept and the options given in a non - strict Python 2 - like educational context, the closest is that the first option is wrong in format but represents keys).
Second question: List.