switch.py

# This class provides the functionality we want. You only need to look at
# this if you want to know how this works. It only needs to be defined
# once, no need to muck around with its internals.
class switch(object):
    def __init__(self, value):
        self.value = value
        self.fall = False
    def __iter__(self):
        """Return the match method once, then stop"""
        yield self.match
        raise StopIteration
    def match(self, *args):
        """Indicate whether or not to enter a case suite"""
        if self.fall or not args:
            return True
        elif self.value in args: # changed for v1.5, see below
            self.fall = True
            return True
        else:
            return False

if __name__ == "__main__":

    action = "check"
    for case in switch(action):
        if case('check'):
            print('-------------Now doing in action: {0}'.format(action))
            break
        if case('update'):
            print('-------------Now doing in action: {0}'.format(action))
            break
        if case('deploy'):
            print('-------------Now doing in action: {0}'.format(action))
            break
        if case():
            print('-------------Unsupport action, check your action: {0}'.format(action))
            # No need to break here, it'll stop anyway