Examples of how to select randomly keys from a list in python 3:

### Create a dictionary

Lets first create a dictionary in python

`d = {'a':1,'b':2,'c':3,'d':4,'e':5}`

### Select randomly a key using random.choice()

To select a random key from a dictionary, a solution is to use random.choice():

`import random`

`random.choice(list(d))`

returns for example

`'c'`

choice can be used multiple times to select randomly multiple elements:

`random.choice(list(d))`

returns for example:

`'e'`

To create a list of keys random selected randomly, a solution is to use a list comprehension:

`r = [random.choice(list(d)) for i in range(2)]`

returns for example

`['a', 'f']`

Another example with 10 elements selected radnomly:

`r = [random.choice(list(d)) for i in range(10)]`

returns for example

`['e', 'd', 'b', 'b', 'c', 'b', 'a', 'a', 'b', 'c']`

Note: to get always the same output, a solution is to use a seed:

`random.seed(42)`

`r = [random.choice(list(d)) for i in range(10)]`

will always returns the same.

### Create a random sample using random.sample()

Another solution is to create a sample without replacement:

`random.sample(list(d),n)`

where l is the list and n the sample's size ( n <= len(l) ).

`random.sample(list(d),2)`

returns for example

`['e', 'a']`