Skip to content

support dataframe protocol (tested with Vaex) #3387

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
wants to merge 2 commits into from
Closed

support dataframe protocol (tested with Vaex) #3387

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
a09f858
support dataframe protocol (tested with Vaex)
maartenbreddels Sep 16, 2021
f727bfa
use pandas 1.5.0 to consume other dataframes
maartenbreddels Sep 30, 2022
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
15 changes: 14 additions & 1 deletion packages/python/plotly/plotly/express/_core.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1303,7 +1303,20 @@ def build_dataframe(args, constructor):
# Cast data_frame argument to DataFrame (it could be a numpy array, dict etc.)
df_provided = args["data_frame"] is not None
if df_provided and not isinstance(args["data_frame"], pd.DataFrame):
args["data_frame"] = pd.DataFrame(args["data_frame"])
if hasattr(args["data_frame"], "__dataframe__"):
try:
import pandas.api.interchange
except ModuleNotFoundError:
raise NotImplementedError(
"The dataframe you provided supports the dataframe interchange"
"protocol, "
"but pandas 1.5.0 or greater is required to consume it."
)
df_not_pandas = args["data_frame"]
df_pandas = pandas.api.interchange.from_dataframe(df_not_pandas)
args["data_frame"] = df_pandas
else:
args["data_frame"] = pd.DataFrame(args["data_frame"])
df_input = args["data_frame"]

# now we handle special cases like wide-mode or x-xor-y specification
Expand Down
13 changes: 13 additions & 0 deletions packages/python/plotly/plotly/tests/test_optional/test_px/test_px_input.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -233,6 +233,19 @@ def test_build_df_with_index():
assert_frame_equal(tips.reset_index()[out["data_frame"].columns], out["data_frame"])


def test_build_df_protocol():
import vaex

# take out the 'species' columns since there are still some issues with strings
iris_pandas = px.data.iris()[["petal_width", "sepal_length"]]
iris_vaex = vaex.from_pandas(iris_pandas)
args = dict(data_frame=iris_vaex, x="petal_width", y="sepal_length")
out = build_dataframe(args, go.Scatter)
assert_frame_equal(
iris_pandas.reset_index()[out["data_frame"].columns], out["data_frame"]
)


def test_timezones():
df = pd.DataFrame({"date": ["2015-04-04 19:31:30+1:00"], "value": [3]})
df["date"] = pd.to_datetime(df["date"])
Expand Down