get prime number python
from num_tool import is_prime
print(is_prime(3))
#returns True because 3 is a primeget prime number python
from num_tool import is_prime
print(is_prime(3))
#returns True because 3 is a primepython prime check
def isPrime(n):
if n<2: #1, 0 and all negative numbers are not prime
return False
elif n==2: #2 is prime but cannot be calculated with the formula below becuase of the range function
return True
else:
for i in range(2, n):
if (n % i) == 0: #if you can precisely divide a number by another number, it is not prime
return False
return True #if the progam dont return False and arrives here, it means it has checked all the numebrs smaller than n and nono of them divides n. So n is primeprime checker in python
#make the function
#to do this all hte vairibles go in side the function
def CheckIfPrime ():
a1 = input("which number do you want to check")
a = int(a1)#you need the checking number as an int not an str
b = 2 #the number to check againts
c = ("yes")
while b < a:#run the loop
if a%b == 0:#check if the division has a remainder
c = ("no")#set the answer
b = b+1
print(c)#print the output
CheckIfPrime ()#call the functionCopyright © 2021 Codeinu
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