python gc回收测试，gc.get_count() 函数实验

gc.get_count().py

import gc

gc.set_threshold(500, 10, 10)

class ClassA(object):
	pass

print gc.get_count()
gc.collect()
print gc.get_count()


l = []
for x in xrange(1,70000):
	a = ClassA()
	l.append(a)
	print gc.get_count()

del l
print gc.get_count()


# 程序运行结果
# 返回GC当前的运行情况
# (0, 0, 0)
# (4, 0, 0)
# (5, 0, 0)
# ...
# (499, 0, 0)
# (500, 0, 0)
# (0, 1, 0)
# (1, 1, 0)
# ...
# (500, 1, 0)
# (0, 2, 0)
# ...
# (500, 11, 0)
# (0, 0, 1)
# (1, 0, 1)
# ...
# (500, 0, 1)
# (0, 1, 1)
# (1, 1, 1)
# ...
# (500, 11, 10)
# (0, 0, 11)
# (1, 0, 11)
# ...
# (500, 0, 11)
# (1, 0, 0)
# (3, 0, 0)
# ...
# (365, 6, 0)
# (0, 6, 0)