18 lines
515 B
Python
18 lines
515 B
Python
from threading import RLock
|
|
class Singleton(object):
|
|
single_lock = RLock()
|
|
|
|
def __init__(self, name):
|
|
self.name = name
|
|
|
|
@classmethod
|
|
def instance(cls, *args, **kwargs):
|
|
with Singleton.single_lock:
|
|
if not hasattr(Singleton, "_instance"):
|
|
Singleton._instance = Singleton(*args, **kwargs)
|
|
return Singleton._instance
|
|
|
|
single_1 = Singleton.instance('第1次创建')
|
|
single_2 = Singleton.instance('第2次创建')
|
|
|
|
print(single_1 is single_2) # True |