Try this:
class Check:
def isbalanced(self,s):
a=len(s)
count=0
for i in range(0,a):
if s[i]=='(':
count=count+1
else:
count=count-1
if count>0:
return False
else:
return True
def callin(self,s1,s2):
if (self.isbalanced(s1+s2)):
return True
else:
return self.isbalanced(s2+s1)
c=input("Enter string\n")
d=input("Enter string\n")
foo = Check()
if (foo.callin(c,d)):
print("Balanced")
else:
print("Not Balanced")