weird-python-statics.py

class Strange:
    foo = 10

    def inc(self):
        self.foo += 1


a = Strange()
b = Strange()

a.inc()
a.inc()
a.inc()
a.inc()
a.inc()

print('a',a.foo)
print('b',b.foo)

Strange.foo = 22

print('a', a.foo)
print('b', b.foo)

b.inc()
b.inc()

c = Strange()

print('a', a.foo)
print('b', b.foo)
print('c', c.foo)

❯ python test.py
a 15
b 10
a 15
b 22
a 15
b 24
c 22