Getting All Keys from a Dictionary in Python

To get all keys from a dictionary, use the keys method. Its parameter is empty. The method returns a special object dict_keys.

Let us have the following dictionary:

pythondct = {
  'a': 1,
  'b': 2,
  'c': 3
}

Let's output all the keys from it:

pythonres = dct.keys()
print(res) # dict_keys(['a', 'b', 'c'])

To make it easier to work with the dict_keys object, you can convert it to a list. This is done using the list function:

pythonres = list(dct.keys())
print(res) # ['a', 'b', 'c']

Задание 1

Given a dictionary:

pythondct = {
  'x': 1,
  'y': 2,
  'z': 3
}

Get his keys.

Задание 2

Given a dictionary:

pythondct = {
  1: 'x',
  2: 'y',
  3: 'z',
  4: 'w'
}

Get his keys.

Задание 3

Given a dictionary:

pythondct = {
  'x': 1,
  'y': 2,
  'z': 3
}

Get a list of keys for this dictionary.

Задание 4

Given a dictionary:

pythondct = {
  2: 'ab',
  4: 'cd',
  6: 'ef'
}

Get the product of all keys in the given dictionary.

Задание 5

Given a dictionary:

pythondct = {
  1: 'x',
  2: 'y',
  3: 'z',
  4: 'w'
}

Get the list of keys of this dictionary as follows:

python[4, 3, 2, 1]