When you have a piece of code you want to run x number of times, then code within that code which you want to run y number of times, you use what is known as a nested loop. In Python, these are heavily used whenever someone has a list of lists-an iterable object within an iterable object.1  Early exits.f you've done any programming before, there's no doubt you've come across a for loop or an equivalent to it. In Python, they work a little differently. Basically, any object with an iterable method can be used in a for loop in Python.
If the result is abnormal, it is typically followed up with a fasting blood glucose test or a GTT. Glucose blood tests are also used to screen pregnant women for gestational diabetes between their 24th and 28th week of pregnancy.
No preparation is required prior to the test. During the test, the mother is asked to drink a sweet liquid (glucose) and then will have blood drawn one hour from having the drink, as blood glucose levels normally peak within one hour. No fasting is required prior to this test.The test evaluates how your body processes sugar. A high level in your blood may indicate your body is not processing sugar effectively (positive test). If the results of this screen are positive, the woman may have the Glucose Tolerance Test performed.o fasting is required prior to this test. The test evaluates how your body processes sugar. A high level in your blood may indicate your body is not processing sugar effectively (positive test). If the results of this screen are positive, the woman may have the Glucose Tolerance Test performed.