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I need help writing a Python function for checking Even, Odd and Prime numbers

I could write 2 separate codes for even/odd and prime numbers but need some help with logic in integrating them into a single function. Please don't paste your own or complete code as I would like to use that little help from you to build the complete function.

21st Apr 2017, 9:31 PM
Nikhil Thakur
Nikhil Thakur - avatar
4 odpowiedzi
+ 1
Break it down.. declare a function.. def func(): inside your function, take user input and assign it to a variable. run the variable thru if/else statements, and print the appropriate output. now run the variable thru another set of if/else to figure out if it is a prime number and then give the appropriate printout. I can give you an example code, but you asked not too.. if you want to see, I will gladly throw something together
21st Apr 2017, 10:26 PM
LordHill
LordHill - avatar
0
you want to sort them into evens and Odds and then primes? like this? input: numbers = 12345678910 output: evens = 246810 odds = 13579 primes = 2357 correct?
21st Apr 2017, 10:10 PM
LordHill
LordHill - avatar
0
No, actually I would be asking the user to input a number and then would like to check against prime/odd/even and print an output saying 'the entered no. is prime/even/odd'.
21st Apr 2017, 10:21 PM
Nikhil Thakur
Nikhil Thakur - avatar
0
Remember that 0 is even. Remember that 2 is the only even prime. If you have sorted that out, check if the number is even: number % 2 == 0 If it is not even, it is odd. If it is odd, it might be prime. Check by division, but do not waste time: Divide by odd numbers only.Check first if the input is a square number, like 25, 49, or 169. That saves looping. Don't divide by anything larger than the square root of the input.
22nd Apr 2017, 2:15 AM
Klaus-Dieter Warzecha
Klaus-Dieter Warzecha - avatar