这里，对于一个非素数，执行了内循环的break语句，但不执行外循环的else语句，为什么？

Question

L = []
nmax = 30

for n in range(2, nmax):
    for factor in L:
        if n % factor == 0:
            break
    else: # no break
        L.append(n)
print(L)

Does the else in the outer loop work if the if statement is not execute din the inner loop...are they really connected inspite being in different loops

Answer 1

The else isn't connected to the if statement but to the break statement.

The for/else syntax means that the else block will be executed if there is no break encountered inside the for loop.

Here is an example for ppl to understand it:

fruits = ["Orange", "Apple", "Banana", "Strawberry"]

def searchFruit(wanted):
    for fruit in fruits:
        if fruit == wanted:
            break
    else: # Can't find the wanted fruit
        return False
    # Found the wanted fruit
    return True

searchFruit("Tomato") # Output : False