Trump, ICE drops rule barring foreign students from taking online-only classes
usatoday.com1 pointsby kdmccormick0 comments
def main():
try:
my_a = a()
except ExA, ExB:
my_a = None
...
def a() -> A:
...
my_b = b()
...
def b() -> B:
...
If b changes its signature to return type C, then it is a type error in a. main doesn't need to worry about what b returns; only a does.