dtale.show() error without data

[wonb168]

import dtale
dtale.show(open_browser=True)

then got an error in browser:

Traceback (most recent call last):
File "/Users/mac/Library/Python/3.9/lib/python/site-packages/dtale/views.py", line 119, in _handle_exceptions
return func(*args, **kwargs)
File "/Users/mac/Library/Python/3.9/lib/python/site-packages/dtale/views.py", line 2875, in get_data
curr_dtypes = [c["name"] for c in global_state.get_dtypes(data_id)]
TypeError: 'NoneType' object is not iterable

why? thanks

[FedererKK]

You have not added any data to the dtale instance, and you can not do that. It is expected behavior

import dtale
import pandas as pd

df = pd.DataFrame([dict(a=1,b=2,c=3)])

# Assigning a reference to a running D-Tale process.
d = dtale.show(df)

[aschonfeld]

So @FedererKK it actually can be started without loading any data. If you do that it should prompt you with a popup to upload some data using the UI (as shown here)

@wonb168 I will look into this and get back to you

[FedererKK]

So @FedererKK it actually can be started without loading any data. If you do that it should prompt you with a popup to upload some data using the UI (as shown here)

@wonb168 I will look into this and get back to you

Very interesting and simple UX, I must have missed that :-)

[aschonfeld]

@wonb168 just released v3.9.0 to pypi (will be on conda-forge shortly) with this fix