# 6/15 is_prime

#1

Hi,

I have some problems with my code.

``````def is_prime(x):
divi = 0
flag = False
if x == 1 or x == 0:
return False
elif x == 2:
return True
else:
for n in range(2, x):
divi = x % n
if divi == 0:
flag = True
if flag == True:
return False
else:
return True``````

I hope you can help me.

Thanks.

#2

@yukardo can you repost your code formatted

if you want to format your code when you paste it here you have three options

1. select the code (after you paste it here) and press `ctrl + k` or
2. select the code(after you paste it here) and press `</>` in the tools pane
3. put this character ` three times at the begining and end of code

#3
``````def is_prime(x):
div = 0
flag = True
if x <= 0 or x == 1:
return False
elif x == 2:
return True
else:
for n in range(2, x - 1):
print "Number: %i divider: %i" % (x, n)
div = x % n
if div == 0:
flag = False
break
else:
flag
return flag``````

#4

For the line " for n in range(2, x - 1)", put "for n in range(2, len(x) - 1).

#5

Here's another way...

``````
def is_prime(x):
n = 2
prime = True
if x < 2:
prime = False
else:
while n < x:
if x % n == 0:
prime = False
break
else:
n += 1
return prime``````