Special Methods

# Class Methods

class InsCounter():

count = 0

def __init__(self, val):

self.val = val

InsCounter.count += 1

def getValue(self):

return self.val

@classmethod

def getCount(cls):

return cls.count

a = InsCounter(1)

b = InsCounter(2)

c = InsCounter(3)

for o in [a, b, c]:

print("val of obj: {}".format(o.getValue()))

print("count: {}".format(o.getCount()))

# 결과

val of obj: 1

count: 3

val of obj: 2

count: 3

val of obj: 3

count: 3

# Static Methods

class InsCounter():

count = 0

def __init__(self, val):

self.val = self.filterint(val)

InsCounter.count += 1

@staticmethod

def filterint(val):

if not isinstance(val, int):

return 0

else:

return val

a = InsCounter(1)

b = InsCounter(2)

c = InsCounter(3)

print(a.val)

print(b.val)

print(c.val)

# 결과

1

2

3