bounded_lambda.py

class A(object):
  
  bounded_lambda = lambda x: x
  
  def __init__(self, unbounded_lambda):
    self.unbounded_lambda = unbound_lambda
    
  def __call__(self):
    print(self.bounded_lambda, self.unbounded_lambda)
    
    # Cannot run this:
    # self.bounded_lambda('just one argument')
    
A(lambda x: int(x))()

# output:
# <bound method A.<lambda> of <__main__.A object at 0x10da394a8>> <function <lambda> at 0x10d898b70>