def get_data(self):
'''
Load option-chain data: if you have it on file use that,
otherwise download it from the web
'''
print('from get_data', mylib.num_of_paths_to_simulate)
self.statusBar().showMessage('Loading Option data.. (this might take a minute or two)')
self.tick_str = self.le.text()
# Check if you have it on file
filenm = mylib.filename_from_ticker_sym(self.tick_str)
self.spy_data = mylib.retrieve_option_chain_from_file(filenm)
# Not on file? well, download it
if self.spy_data.empty:
self.statusBar().showMessage('Downloading Option data from the web.. (this might take a few minutes)')
self.spy_data = mylib.retrieve_option_chain(self.tick_str)
if self.spy_data.empty:
QtGui.QMessageBox.warning(self, 'Message',
'Error while downloading option data. \nPlease double-check the ticker symbol is correct',
buttons = QtGui.QMessageBox.Ok)
return
# Go to the next step
self.check_ready_to_munch_numbers()
def load_option_chain_file(self):
'''
Load option-chain data from file.
This serves the case of not being able to download a fresh copy
or the case of the US stock exchange being closed right now
'''
self.statusBar().showMessage('Loading Option Chain file')
if not self.SimulPaths.empty:
self.ask_to_reset_sim_paths()
csv_filename = QtGui.QFileDialog.getOpenFileName(self, 'Open csv file')
try:
self.spy_data = mylib.retrieve_option_chain_from_file(csv_filename)
except pd.parser.CParserError:
self.spy_data = pd.DataFrame()
QtGui.QMessageBox.warning(self, 'Impossible to load file',
'Not able to load the selected file. \
\nFile should be one automatically created from a previous run of this App\
\n\n(It should look something like "2016-01-16_SPYoptionChain.csv")', buttons = QtGui.QMessageBox.Ok)
# Go to next step
self.check_ready_to_munch_numbers()
