local variable 'df' referenced before assignment

[yellow1912]

Below is the trace

File "/usr/local/lib/python3.10/dist-packages/tessa/symbol/symbol.py", line 90, in price_latest
    return price_latest(**self._create_price_args())
  File "/usr/local/lib/python3.10/dist-packages/tessa/price/price.py", line 91, in price_latest
    df, currency = price_history(query, source, currency_preference)
  File "/usr/local/lib/python3.10/dist-packages/tessa/price/price.py", line 40, in price_history
    df, effective_currency = src.get_price_history_bruteforcefully(
  File "/usr/local/lib/python3.10/dist-packages/tessa/sources/sources.py", line 43, in get_price_history_bruteforcefully
    res = self.get_price_history(query, currency_preference)
  File "/usr/local/lib/python3.10/dist-packages/tessa/price/yahoo.py", line 28, in get_price_history
    df = df.copy()

I was trying to get MSFT price like this:

s1 = Symbol("MSFT")
print(s1.price_latest())

Looking at the code, I think you may have to throw an exception if you cannot get the ticker price for any reason

[ymyke]

Thanks for reporting! Fixed in latest release v0.8.1.