make_c

hack_some_singleton.py

class C:
    def __init__(self):
        print("here")



c_cache = {}
def make_c():
    import inspect
    frame = inspect.stack()
    key = '.'.join([frame[1].filename, frame[1].function])
    if key not in c_cache:
        c_cache[key] = C()
    return c_cache[key]


def foo():
    c = make_c()


def bar():
    c = make_c()


for i in range(100):
    foo()

for i in range(100):
    bar()