Python implementation of C Switch Case clause
Using python context manager and if blocks, we can simulate switch case by instantiating Switch class
and calling its method __call__()
Import Switch class from switch.py module
from switch import Switch
Create the cases block inside Switch instance context block
variable = 10 with Switch(variable) as case: if case(0): print('case 0') elif case(*range(1, 6)): print('case 1, 2, 3, 4 and 5') elif case(6, 7, 8): print('case 6, 7, and 8') elif case(9, 10): print('case 9 and 10') else: print('default') # >> case 9 and 10
You can also handle exceptions that can occurs inside the switch block, without using try/except
variable = 11 mylist = list(range(10)) with Switch(variable, suppress=IndexError) as case: if case(*range(10)): print(mylist[variable]) # the same as print(mylist[case.value]) else: print(mylist[variable]) print('Index out of the range')
Without the suppress argument, it will raise the exception
variable = 11 mylist = list(range(10)) with Switch(variable) as case: if case(*range(10)): print(mylist[variable]) # the same as print(mylist[case.value]) else: print(mylist[variable]) print('Index out of the range') # Traceback (most recent call last): # File "~/tests.py", line 10, in <module> # print(mylist[variable]) # IndexError: list index out of range