import sys

for line in sys.stdin:
    frm, to = map(int, line.split())
    res = 0
    for i in range(frm, to+1):
        if i == 1:
            continue
        if i == 2:
            res += 1
            continue
        try:
            for j in range(2, i):
                if j*j > i: break
                if i % j == 0:
                    raise Exception()
        except:
            pass
        else:
            res += 1
    print(res)

請問以上CODE還能怎麼再增進效率?
這樣一直TLE 9S 但我看跟板上C解答解法差不多

python 無法硬輾。