human
Solve the following python programming problem given the following code:
def test_to_str(self) : 
    input_ = ArgvInput (['cli.py', '-f', 'foo']) 
    self.assertEqual ('-f foo', str (input_)) 
    input_ = ArgvInput (['cli.py', '-f', '--bar=foo', 'a b c d', "A
B'C"]) 
    def escape(s) : 
        return "\\'".join (((("'" + p) + "'") for p in s.split ("'"))) 
self.assertEqual (((('-f --bar=foo ' + escape ('a b c d')) + ' ') + escape ("A
B'C")), str (self)) 

    
    

    Fix the buggy line: self.assertEqual (((('-f --bar=foo ' + escape ('a b c d')) + ' ') + escape ("A
B'C")), str (self))
assistant
#Here is Python code to fix the buggy line: self.

self.assertEqual (((('-f --bar=foo ' + escape ('a b c d')) + ' ') + escape ("A
B'C")), str (input_))