# your code goes here
class A:
def __init__(self,a,size):
self.data=a
self.size=size
def check_names(self):
return all(self.data.columns==names)
class AA:
def __init__(self,a1,a2,size):
self.a1=A(a1,size)
self.a2=A(a2,size)
def check(self):
return self.a1.check_names() and self.a2.check_names()
# newAA=AA(a1,a2,10)
# newAA.check()
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