I'm trying to find a method to import the universe selection functions from a different file using the classic algorithm framework. But my method generates an error. Here's the code for both main.py and universe_selection.py

# main.py

from universe_selection import *

class VerticalQuantumInterceptor(QCAlgorithm):
def Initialize(self):
self.SetStartDate(2019, 7, 12)# Set Start Date
self.SetEndDate(2019, 7, 16)
self.SetCash(100000) # Set Strategy Cash

self.UniverseSettings.Resolution = Resolution.Daily

self.tickers = ["AAPL", "TSLA", "FB"]

self.AddUniverse(CoarseSelection, FineSelection)

def OnData(self, data):

for ticker in self.tickers:
self.Debug("TICKER: " + ticker)

# univserse_selection.py

def CoarseSelection(self, coarse):
filteredCoarse = [x.Symbol for x in coarse if x.Symbol.Value in self.tickers and x.HasFundamentalData]
return filteredCoarse

def FineSelection(self, fine):
return [x.Symbol for x in fine]