text: # import pandas as pd
  
  
  def sma(ohlcv, period=10, ohlcv_series="close"):
      """
      Calculate simple moving average of the input data
  
      :param _ohlcv: ohlcv dataframe
      :type _ohlcv: pd.DataFrame
      :param period: how many periods to look back
      :type period: int
      :param ohlcv_series: which of the o/h/l/v to use
      :type ohlcv_series: str
      :return: pd.series
      """
      _ohlcv = ohlcv[[ohlcv_series]].copy(deep=True)
      indicator_values = _ohlcv[ohlcv_series].rolling(window=period, min_periods=period).mean()
  
      return indicator_values
  
  
  def sma_dif(_ohlcv, short_period=12, long_period=26, percent_diff=True, ohlcv_series="close"):
      """
      If the value is above 0,
      it means short line is above the long line,
      momentum is strong
      """
      short = _ohlcv[ohlcv_series].rolling(window=short_period, min_periods=short_period).mean()
      long = _ohlcv[ohlcv_series].rolling(window=long_period, min_periods=long_period).mean()
      indicator_col = short / long - 1 if percent_diff else short - long
  
      return indicator_col
  