A switch "statement" for Python. Please don't actually use this.

x = 5

with switch(x) as s:
    if s.case(4):
        assert False
    if s.case(5):
        assert True
        s.fallthrough()
    if s.case(lambda x: x > 3):
        assert True
    if s.case(6):
        assert False
    if s.default():
        assert False

Tests and usage in test.py.