Tuesday, June 26, 2018

Pythonic switch statement

Playing with experimental and an old recipe created by Brian Beck.

The content of a test file:

from __experimental__ import switch_statement

def example(n):
    result = ''
    switch n:
        case 2:
            result += '2 is even and '
        case 3, 5, 7:
            result += f'{n} is prime'
        case 0: pass
        case 1:
        case 4, 6, 8, 9:
            result = f'{n} is not prime'
            result = f'{n} is not a single digit integer'
    return result

for i in range(11):

Trying it out

$ python -m experimental test_switch
0 is not prime
1 is not prime
2 is even and 2 is prime
3 is prime
4 is not prime
5 is prime
6 is not prime
7 is prime
8 is not prime
9 is not prime
10 is not a single digit integer

Just having fun ... Please, do not even think of using this for serious work.

1 comment:

Anonymous said...

Nice! Beings me back to the C days. Michael Kennedy who does one of the Python podcasts did something similar. He has a write up over at github.