python - Getting Function name and arguments -

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I have come to this situation while writing code in Python for my position and started thinking about this problem.

The problem is given in a string in which the function is named with its logic, how do we get the number of arguments and logic names in the function.

My first thought was: 

  s = 'func (a, b)' index = s.find ('(') if (index! = -1) : Arg_list = s [index + 1: -1] .split (',') Func_name = s [: index]   
 But as I thought and started, I realized that What function is specified within the function, which has its own logic?  
  func1 (func2 (a, b, c), func3 (d, e))   
 With the above approach I will end with the correct function name but in arg_list  
  ["func2 (a", "b", "c"), "func3" "D", "e")]   
 Usually this How to solve the situation?   
 
 
 If your language looks like python, use  Ast.parse () :  
  Import ast parse (s): tree = ast.parse () print ast.dump (tree) parse ('f , B) ')   
 All your required information will be encoded in the  tree .

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