human
Solve the following python programming problem given the following code:
def _require_min_periods(p) : 
    def _check_func(minp, window) : 
        if (minp is None) : 
            return window 
else : 
            return max (p, minp) 
return p 

    
    

    Fix the buggy line: return p
assistant
#Here is Python code to fix the buggy line: return p
.

return def _check_func(