class_docstr: StockPortfolio is the main class of `pyrtfolio` which is going to manage all the introduced stocks.
  
  This class is the one that contains the stocks information and the one that will be used by the user in order to
  generate a custom portfolio. So on, this function implements the methods to calculate all the values required in a
  basic portfolio and, as already mentioned, the method to add stocks.
  
  Attributes:
      stocks (:obj:`list`, protected):
          this list contains all the introduced stocks, which will later be used to generate the portfolio.
      stock_objs (:obj:`list`, protected):
          this list contains all the introduced Stock objects, in order to be able to refresh them.
      data (:obj:`pandas.DataFrame`): it is the generated portfolio, once the addition of every stock is validated.
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docstr: This method calculates the gross current value which is the total current value of the shares bought,
  which is the result of the multiplication of the current price with the number of bought shares.
docstr_tok: ["This","method","calculates","the","gross","current","value","which","is","the","total","current","value","of","the","shares","bought",",","which","is","the","result","of","the","multiplication","of","the","current","price","with","the","number","of","bought","shares","."]
code: def calculate_gross_current_value(current_price, num_of_shares):
      """
      This method calculates the gross current value which is the total current value of the shares bought,
      which is the result of the multiplication of the current price with the number of bought shares.
      """
      return float(current_price * num_of_shares)
  
file_path: pyrtfolio/pyrtfolio/StockPortfolio.py
imports: from datetime import date
  import investpy
  import pandas
  from pyrtfolio.Stock import Stock
label_desc: Use image node_id 7 for calling the StockPortfolio obj's underlying member method code with example usage: obj.calculate_gross_current_value(current_price, num_of_shares) and returns: float