human
Solve the following python programming problem given the following code:
def enable_debug() : 
    def assert_(wrapper, arguments, traverser) : 
        traverser.asserts = True 
        for arg in arguments : 
            if (not arg.get_literal_value (traverser)) : 
                traverser.err.error (err_id = ('js', 'debug', 'assert'), error = ('`%s` expected to be truthy' % arg), description = 'Assertion error') 
GLOBAL_ENTITIES ['__assert'] = { 
        'return' : callable_, 
} 
    def callable_(wrapper, arguments, traverser) : 
        traverser.asserts = True 
        for arg in arguments : 
            if (not arg.callable) : 
                traverser.err.error (err_id = ('js', 'debug', 'callable'), error = ('`%s` expected to be callable' % arg), description = 'Assertion error') 
GLOBAL_ENTITIES ['__callable'] = { 
        'return' : assert_, 
} 

    
    

    Fix the buggy line: 'return' : callable_ ,
assistant
#Here is Python program to fix the buggy line: 'return' : callable_ ,
.

'return' : assert_ ,