Python breaking. No idea why

Taewoo Kim

Sorry for complete noob'ness

my backtests were so slow, so I was looking at optimization strategies.. I wanted to use pypy - to check the version, i ran "python3 -v", instead of "python3 -V".... i'm sure this isn't the reason, but ever since then, I keep getting this error

Traceback (most recent call last):
  File "fx_det_SR.py", line 686, in <module>
    thestrats = cerebro.run()
                -> <backtrader.cerebro.Cerebro object at 0x0000009591CD64E0>
  File "C:\Python36\lib\site-packages\backtrader\cerebro.py", line 873, in run
    runstrat = self.runstrategies(iterstrat)
               |                  -> ((<class '__main__.TKdeter'>, (), {'timeframes': [{'timeframe': '24H', 'num_bars_in_sr': 10, 'vol_significance': 0.5}, {'timef...
               -> <backtrader.cerebro.Cerebro object at 0x0000009591CD64E0>
  File "C:\Python36\lib\site-packages\backtrader\cerebro.py", line 988, in runstrategies
    strat._start()
    -> <__main__.TKdeter object at 0x0000009591CFB400>
  File "C:\Python36\lib\site-packages\backtrader\strategy.py", line 346, in _start
    analyzer._start()
    -> <backtrader.analyzers.drawdown.TimeDrawDown object at 0x0000009591D51550>
  File "C:\Python36\lib\site-packages\backtrader\analyzer.py", line 302, in _start
    self.dtcmp, self.dtkey = self._get_dt_cmpkey(datetime.datetime.min)
    |           |            |                   -> <module 'datetime' from 'C:\\Python36\\lib\\datetime.py'>
    |           |            -> <backtrader.analyzers.drawdown.TimeDrawDown object at 0x0000009591D51550>
    |           -> <backtrader.analyzers.drawdown.TimeDrawDown object at 0x0000009591D51550>
    -> <backtrader.analyzers.drawdown.TimeDrawDown object at 0x0000009591D51550>
  File "C:\Python36\lib\site-packages\backtrader\analyzer.py", line 375, in _get_dt_cmpkey
    dtcmp, dtkey = self._get_subday_cmpkey(dt)
                   |                       -> datetime.datetime(1, 1, 1, 0, 0)
                   -> <backtrader.analyzers.drawdown.TimeDrawDown object at 0x0000009591D51550>
  File "C:\Python36\lib\site-packages\backtrader\analyzer.py", line 429, in _get_subday_cmpkey
    dtcmp -= tadjust
    |        -> datetime.timedelta(0, 60)
    -> datetime.datetime(1, 1, 1, 0, 0)
OverflowError: date value out of range

I've been wrestling this thing for last 4 hours with no luck. I haven't updated any modules, installed any thing, nada.

ANyone have any suggestions? FYI i ran this on same dataset with same parameters that was working last night. It just "broke".

Taewoo Kim

never mind.. the problem disappeared randomly ..

odd