What language are you using?
Python
Have you tried latest version of polars?
Yes.
What version of polars are you using?
Polars 0.14.1
What operating system are you using polars on?
Microsoft Windows 10 Pro, Version 10.0.19043 Build 19043
What language version are you using
python 3.8.8
Describe your issue.
Code loops through approx. 3.5k stock price time-series and creates additional columns e.g. moving averages. This works completely fine up to two thirds of the task and then creates the following exception
Traceback (most recent call last):
File "file link here", line 219, in <module>
"Ret": ((df['price']/df['price'].shift(1)-1).ewm_mean(alpha=1-0.97, )*255).round(4),
File "C:\Users\user\AppData\Roaming\Python\Python38\site-packages\polars\internals\series.py", line 3654, in ewm_mean
File "C:\Users\user\AppData\Roaming\Python\Python38\site-packages\polars\internals\frame.py", line 4724, in select
File "C:\Users\user\AppData\Roaming\Python\Python38\site-packages\polars\internals\lazy_frame.py", line 622, in collect
PanicException: capacity overflow
thread '<unnamed>' panicked at 'capacity overflow', library\alloc\src\raw_vec.rs:517:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
thread '<unnamed>' panicked at 'capacity overflow', library\alloc\src\raw_vec.rs:517:5
thread '<unnamed>' panicked at 'capacity overflow', library\alloc\src\raw_vec.rs:517:5
thread '<unnamed>' panicked at 'capacity overflow', library\alloc\src\raw_vec.rs:517:5
thread '<unnamed>' panicked at 'capacity overflow', library\alloc\src\raw_vec.rs:517:5
I do not understand what this error is trying to tell me and have no idea how to debug.
