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[英]User-defined Python 3 function for finding prime numbers not working
[英]Creating user defined function for checking prime no in python
num=int(input("enter the no: "))
def Prime(num):
"""Check whether a no is prime or not"""
for i in range(2,num):
if num%i==0:
print(num," is not prime no")
break
else:
print(num,"is prime no")
break
print(Prime(num))
而 output 是這樣的
enter the no: 45
45 is prime no
None
這段檢查素數的代碼有什么問題,以及為什么在 output 中打印“None”。我如何在此處使用 return。 output 對於一些不正確的 97 是正確的,但在這里對於 45 是錯誤的。非常感謝您的建議。
num=int(input("enter the no: "))
def Prime(num):
flag = False
if num > 1:
for i in range(2, num):
if (num % i) == 0:
flag = True
break
if flag:
print(num, "is not a prime number")
else:
print(num, "is a prime number")
Prime(num)
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