python main.py gen has MemoryError crash

[fuqiyang11]

if ip file is too big, such as 1.5GB
lines = self.src_handle.read().splitlines() will crash

it can work when i modify to:
# lines = self.src_handle.read().splitlines()
while True:
# for line in lines:
line = self.src_handle.readline().strip("\n")
if not line:
break

[fuqiyang11]