1.4.2 break and else

The for statement has two important keywords: break and else. The keyword break quits the for loop even if the list we are iterating is not exhausted:

x_values=[0.5, 0.7, 1.2]
threshold = 0.75
for x in x_values:
    if x > threshold:
        break
    print(x)

The finalizing else checks whether the for loop was broken with the break keyword. If it was not broken, the block following the else keyword is executed:

x_values=[0.5, 0.7]
threshold = 0.75
for x in x_values:
    if x > threshold:
       break
else:
    print("all the x are below the threshold")