And we are going to place this return statement within the body of the if.
So notice that it is indented, indicating that, that falls within the if statement.
The way that we read this code is that if this scheduled time is equal to the
estimated time, if that boolean expression is true, then the return on time statement
is executed. Otherwise, it is not executed, and we
would continue down on, with any code that follows this if.
Let's save this and run it. So when I call this function, in the
shell, with equal times it reports the status on time.
If I were to call this function at the moment with one of the time, pairs of
times that are not equal, then nothing is returned.
To be more precise, I should actually say that it looks like nothing is returned.
Because something is returned by this function, even though no return statement
was executed. Let's print this function call.
So the function is called, whatever value is returned is returned.
And that value is about to be printed. And we can see that none is printed.
When a function call executes and no return statement is executed, the value
none is returned by the function. The type of none is none-type, not string.
So that breaks the type contract that we specified for our report status function
We need to complete the rest of the function ensuring that, that type contract
is abided by. Let's go back to defining the function.
Right now, we have a single if statement and when this boolean condition is true,
on time is returned. When it's false we want to do something
else. So we check to see if this is true, and
then we're going to use L, standing for else, L if, to check for a second
condition. This time we're going to check to see
whether the scheduled time is bigger or greater than estimated time.
And when it is, we will return early. .
And it's to be spelled as scheduled. So at this stage let's run it.
