6. is_prime


#1

So I wrote this extremely long piece of code… It works, but i just feel like it should be shorter and simpler.

def is_prime(x):
n = range(2, x - 1)
if x == 2:
return True
elif x % 2 == 0:
return False
elif x == 3:
return True
elif x % 3 == 0:
return False
elif 2 > x:
return False
elif x == 5:
return True
elif x % 5 == 0:
return False
elif x == 7:
return True
elif x % 7 == 0:
return False
else:
return True


#2

you could use range() in a for loop?


#3

I’m still getting used to that, I don’t fully understand it yet. Thanks for the reply.


#4

range produces a list:

print range(5)

and lists can be looped:

for item in your_list:

but these concepts have been taught, you can always revisit earlier exercise or documentation if you need a syntax refresher. There is no shame in that.


#5

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