def _odd_iter():
n = 1
while True:
n = n + 2
yield n
def _not_divisible(n):
return lambda x: x % n > 0
def primes():
yield 2
it = _odd_iter()
while True:
n = next(it)
yield n
it = filter(_not_divisible(n), it) # this works
# it = filter(lambda x : x % n > 0, it) this doesn't work
for n in primes():
if n < 10:
print(n)
else:
break
It's a generator to provide prime numbers. It works fine but if a lambda expression is used directly in the filter, it just does not work and number 9 is printed. so why is that?
