Dictionary has keys and values mixed up

When opening a dictionary of dataframes from the Variable explorer, the sizes and values do not match the actual data. Specifically, when I start sorting the keys, one can see that the sizes are not sorted correctly:

I get this problem even before “sorting” the dictionary, because when opening the dictionary the keys by default are displayed alphabetically and not in the actual insertion order.

However, I do not have this problem with dicts of small dfs. E.g., sorting this one works perfectly fine:

directors = {}
directors["A"] = pd.DataFrame({"A": "joe","A2": "biden"}, index=[0])
directors["B"] = pd.DataFrame({"B": "don","B2": "trump"}, index=[0])
directors["C"] = pd.DataFrame({"C": "anderson","C2": "cooper"}, index=[0])
directors["D"] = pd.DataFrame({"D": "katie","D2": "hobbs"}, index=[0])

• Spyder version: 4.1.5
• Python version: 3.7.7 64-bit
• Qt version: 5.12.8
• PyQt version: 5.12.3
• Operating System name/version: Windows 10

[hengin]

Hello @ccordoba12, thanks for responding so quickly! I see GitHub has already linked my pull request, so I guess I’m only commenting here to show my appreciation 👍

[hengin]

I’m currently using 4.2.0 and see a similar issue.

Steps to reproduce:

1. Create a dict with lists as values. An illustrative example is: var = {'a_len=4': [1,2,3,4], 'b_len=8': [1,2,3,4,5,6,7,8], 'c_len=5': [1,2,3,4,5]}
2. View the variable in the variable explorer. Click on “Size” twice (to sort increasing and then decreasing). On the second click only the size column is reordered. Thus the columns go out of sync.

As the problem only ocurred when sorting in the reverse direction, I quickly tracked it down to the line https://github.com/spyder-ide/spyder/blob/436290ba71bb16c5928676467a358b70f4f38c10/spyder/plugins/variableexplorer/widgets/collectionseditor.py#L288 It is missing a keyword argument “reverse=reverse”. (Verified by editing my local files.)

I could make a pull request with this change. Would branch 4.x be the right place to put it?