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Code Issues Projects Releases Packages Wiki Activity Actions 9

Update primes script.

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This commit is contained in:
Georg Brandl 2009-10-11 08:48:28 +00:00
parent 6e62c56416
commit 4271ecaf72
2 changed files with 18 additions and 15 deletions
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31
Demo/scripts/primes.py
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@ -2,26 +2,29 @@
# Print prime numbers in a given range
def primes(min, max):
if 2 >= min:
print 2
primes = [2]
i = 3
while i <= max:
for p in primes:
if i % p == 0 or p*p > i:
break
if i % p != 0:
primes.append(i)
if i >= min:
print i
i += 2
def main():
import sys
min, max = 2, 0x7fffffff
if sys.argv[1:]:
min = int(eval(sys.argv[1]))
min = int(sys.argv[1])
if sys.argv[2:]:
max = int(eval(sys.argv[2]))
max = int(sys.argv[2])
primes(min, max)
def primes(min, max):
if 2 >= min: print 2
primes = [2]
i = 3
while i <= max:
for p in primes:
if i%p == 0 or p*p > i: break
if i%p <> 0:
primes.append(i)
if i >= min: print i
i = i+2
if __name__ == "__main__":
main()