comefrom: <doocs>1614.Maximum Nesting Depth of the Parentheses_1.py
code: def maxDepth( s: str) -> int:
      n = ans = 0
      for c in s:
          if c == '(':
              n += 1
              ans = max(ans, n)
          elif c == ')':
              n -= 1
      return ans
masked: def sample_funcname ( var_0 : str ) -> int :
      var_5 = var_3 = 0
      for var_6 in var_0 :
          if var_6 == '(' :
              var_5 += 1
              var_3 = max ( var_3 , var_5 )
          elif var_6 == ')' :
              var_5 -= 1
      return var_3
  