Restarting a program after exception

Question

I have a program that queries an API every few seconds. Each response triggers a few functions which themselves make some calls to websites and such -- calls that I don\'t w

Answer 1

To restart anything, just use a while loop outside the try. For example:

def foo():
    while True:
        try:
            foo2()
        except:
            pass
        else:
            break

---

And if you want to pass the exception up the chain, just do this in the outer function instead of the inner function:

def queryRepeatedly():
    while True:
        while True:
            try:
                foo()
                bar()
                baz()
            except:
                pass
            else:
                break
        time.sleep(15)

def foo():
    foo2()

---

All that indentation is a little hard to read, but it's easy to refactor this:

def queryAttempt()
    foo()
    bar()
    baz()

def queryOnce():
    while True:
        try:
            queryAttempt()
        except:
            pass
        else:
            break

def queryRepeatedly():
    while True:
        queryOnce()
        time.sleep(15)

---

But if you think about it, you can also merge the two while loops into one. The use of continue may be a bit confusing, but see if you like it better:

def queryRepeatedly():
    while True:
        try:
            foo()
            bar()
            baz()
        except:
            continue()
        time.sleep(15)