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Merged revisions 75344 via svnmerge from 

svn+ssh://pythondev@svn.python.org/python/trunk

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  r75344 | georg.brandl | 2009-10-11 10:48:28 +0200 (So, 11 Okt 2009) | 1 line

  Update primes script.
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This commit is contained in:
Georg Brandl 2009-10-11 08:49:57 +00:00
parent 5f8814dabd
commit edbc50cd0e
2 changed files with 18 additions and 14 deletions
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2
Demo/scripts/README
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@ -2,7 +2,7 @@ This directory contains a collection of executable Python scripts.
See also the Tools/scripts directory!
beer.py Print the classic 'bottles of beer' list.
beer.py Print the classic 'bottles of beer' list
eqfix.py Fix .py files to use the correct equality test operator
fact.py Factorize numbers
find-uname.py Search for Unicode characters using regexps

30
Demo/scripts/primes.py
View File

@ -2,26 +2,30 @@
# 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()