不久前我遇到了这个(非常)简单的程序。它只输出前 x 个素数。我很尴尬地问,有没有办法让它更“pythonic”,即在使其(更多)可读的同时压缩它?切换功能很好;我只对可读性感兴趣。
谢谢
from math import sqrt
def isprime(n):
if n ==2:
return True
if n % 2 ==0 : # evens
return False
max = int(sqrt(n))+1 #only need to search up to sqrt n
i=3
while i <= max: # range starts with 3 and for odd i
if n % i == 0:
return False
i+=2
return True
reqprimes = int(input('how many primes: '))
primessofar = 0
currentnumber = 2
while primessofar < reqprimes:
result = isprime(currentnumber)
if result:
primessofar+=1
print currentnumber
#print '\n'
currentnumber += 1