Skip to content
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

Add cast #338

Merged
merged 2 commits into from
Dec 8, 2023
Merged

Add cast #338

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
f0e97ba
add cast
MarcoGorelli Dec 7, 2023
ebaeb67
note what may vary across implementations
MarcoGorelli Dec 8, 2023
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
10 changes: 10 additions & 0 deletions spec/API_specification/dataframe_api/column_object.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1057,3 +1057,13 @@ def persist(self) -> Self:
at most once per dataframe, and as late as possible in the pipeline.
"""
...

def cast(self, dtype: DType) -> Self:
"""Cast specified columns to specified dtypes.

The following is not specified and may vary across implementations:

- Cross-kind casting (e.g. integer to string, or to float)
- Behaviour in the case of overflows
"""
...
10 changes: 10 additions & 0 deletions spec/API_specification/dataframe_api/dataframe_object.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -925,3 +925,13 @@ def persist(self) -> Self:
features.append(column_name)
"""
...

def cast(self, dtypes: Mapping[str, DType]) -> Self:
"""Convert specified columns to specified dtypes.

The following is not specified and may vary across implementations:

- Cross-kind casting (e.g. integer to string, or to float)
- Behaviour in the case of overflows
"""
...