Memory Leak in code

[HITKJ]

this line would cause memory leak, resulting in "corrupted size vs. prev_size":

InterHand2.6M/data/InterHand2.6M/dataset.py

Line 84 in 98502a6

hand_type = ann['hand_type']

It suppoes to allocate new memory space for handtype like this:

•    hand_type= ann['hand_type'].lower()
  

[mks0601]

I can't get why it causes memory leak?

[HITKJ]

In python, same string points to the same address, causing whole memory space of ann which reference the string hand_type can't be freed.
annis a variable that takes up a lot of memory space and cannot be freed in each loop. As a result, I got memory leak.
str.lower() will allocate new memory space which is different from ann['hand_type'].

[mks0601]

I see. Thanks for your good tip!