python第五章程序練習題

5.2

def isOdd(a):
    if a%2!=0:
        return True
    else:
        return False7 a=eval(input())
print(isOdd(a))

5.3

def isNum(x):
    try:
        x=eval(x)
        return True
    except NameError:
        return False8 x=input()
print(isNum(x))

5.4

def multi(*a):
    m=1
    for x in a:
        m=m*x
    return m7 x=input().split()
8 lst=[int(i) for i in x]
print(multi(*lst))

5.5

from math import sqrt
def isPrime(n):
    if n == 1:
        return False
    for i in range(2,int(sqrt(n))+1):
        if n % i == 0:
            return False
    return True
try:
    n = eval(input())
    print(isPrime(n))
except:
    print("輸入錯誤，請輸入一個數字")