code: def get_min(array):
      
      smallest = np.inf
      for i in array:
          try:
              if i < smallest:
                  smallest = i
          except:
              pass
      if np.isinf(smallest):
          raise ValueError("there's no numeric value in array!")
      else:
          return smallest
docs: Get minimum value of an array. Automatically ignore invalid data.
  
      **中文文档**
  
      获得最小值。