There is a bug in example7

[Maroon1995]

In your example7, there is a bug where the parameter level of the added item is set to different levels, and there may be a situation where all remaining items cannot be loaded when loaded into the second vehicle. At this point, the second car is empty. In the pack method, when iterating through enumerate (self. bins) to the second bin, there is a situation where bin. items are empty, and an error of dividing by 0 is reported. You need to add a check (if bin. items:) before "self. bins [idx]. activity=self. activityCenter (bin)"

[jerry800416]

@Maroon1995
Thank you very much, this problem will be fixed in the next version.

[liyinstyle]

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