Make the indirect dependency on jinja2 optional (#203)

.github/workflows/continuous-integration.yml

@@ -50,6 +50,8 @@ jobs:
           - python-version: "3.11"
             pandas-version: pre
             polars: true
+          - python-version: "3.11"
+            uninstall_jinja2: true
     runs-on: ubuntu-20.04
     steps:
       - name: Checkout
@@ -83,6 +85,10 @@ jobs:
         if: matrix.polars
         run: pip install -e .[polars]
 
+      - name: Uninstall jinja2
+        if: matrix.uninstall_jinja2
+        run: pip uninstall jinja2 -y
+
       - name: Install a Jupyter Kernel
         run: python -m ipykernel install --name itables --user
 

README.md

@@ -1,6 +1,6 @@
 # Interactive Tables
 
-![CI](https://github.com/mwouts/itables/workflows/CI/badge.svg)
+![CI](https://github.com/mwouts/itables/actions/workflows/continuous-integration.yml/badge.svg?branch=main)
 [![codecov.io](https://codecov.io/github/mwouts/itables/coverage.svg?branch=main)](https://codecov.io/github/mwouts/itables?branch=main)
 [![Language grade: Python](https://img.shields.io/lgtm/grade/python/g/mwouts/itables.svg)](https://lgtm.com/projects/g/mwouts/itables/context:python)
 [![Pypi](https://img.shields.io/pypi/v/itables.svg)](https://pypi.python.org/pypi/itables)

codecov.yml

@@ -1,9 +1,9 @@
 codecov:
     notify:
-        after_n_builds: 15
+        after_n_builds: 10
 
 comment:
-  after_n_builds: 15
+  after_n_builds: 10
 
 coverage:
   status:

docs/changelog.md

@@ -1,6 +1,13 @@
 ITables ChangeLog
 =================
 
+1.6.2 (2023-10-07)
+------------------
+
+**Fixed**
+- We have removed an indirect dependency on `jinja2` caused by the Pandas style objects ([#202](https://github.com/mwouts/itables/issues/202))
+
+
 1.6.1 (2023-10-01)
 ------------------
 

docs/quick_start.md

@@ -14,7 +14,7 @@ kernelspec:
 
 # Quick Start
 
-![CI](https://github.com/mwouts/itables/workflows/CI/badge.svg)
+![CI](https://github.com/mwouts/itables/actions/workflows/continuous-integration.yml/badge.svg?branch=main)
 [![codecov.io](https://codecov.io/github/mwouts/itables/coverage.svg?branch=main)](https://codecov.io/github/mwouts/itables?branch=main)
 [![Language grade: Python](https://img.shields.io/lgtm/grade/python/g/mwouts/itables.svg)](https://lgtm.com/projects/g/mwouts/itables/context:python)
 [![Pypi](https://img.shields.io/pypi/v/itables.svg)](https://pypi.python.org/pypi/itables)

itables/javascript.py

@@ -10,7 +10,11 @@
 
 import numpy as np
 import pandas as pd
-import pandas.io.formats.style as pd_style
+
+try:
+    import pandas.io.formats.style as pd_style
+except ImportError:
+    pd_style = None
 
 try:
     import polars as pl
@@ -40,7 +44,9 @@
     "warn_on_int_to_str_conversion",
 }
 _ORIGINAL_DATAFRAME_REPR_HTML = pd.DataFrame._repr_html_
-_ORIGINAL_DATAFRAME_STYLE_REPR_HTML = pd_style.Styler._repr_html_
+_ORIGINAL_DATAFRAME_STYLE_REPR_HTML = (
+    None if pd_style is None else pd_style.Styler._repr_html_
+)
 _ORIGINAL_POLARS_DATAFRAME_REPR_HTML = pl.DataFrame._repr_html_
 _CONNECTED = True
 
@@ -92,12 +98,14 @@ def init_notebook_mode(
     if all_interactive:
         pd.DataFrame._repr_html_ = _datatables_repr_
         pd.Series._repr_html_ = _datatables_repr_
-        pd_style.Styler._repr_html_ = _datatables_repr_
+        if pd_style is not None:
+            pd_style.Styler._repr_html_ = _datatables_repr_
         pl.DataFrame._repr_html_ = _datatables_repr_
         pl.Series._repr_html_ = _datatables_repr_
     else:
         pd.DataFrame._repr_html_ = _ORIGINAL_DATAFRAME_REPR_HTML
-        pd_style.Styler._repr_html_ = _ORIGINAL_DATAFRAME_STYLE_REPR_HTML
+        if pd_style is not None:
+            pd_style.Styler._repr_html_ = _ORIGINAL_DATAFRAME_STYLE_REPR_HTML
         pl.DataFrame._repr_html_ = _ORIGINAL_POLARS_DATAFRAME_REPR_HTML
         if hasattr(pd.Series, "_repr_html_"):
             del pd.Series._repr_html_
@@ -267,7 +275,7 @@ def to_html_datatable(
     use_to_html=False,
     **kwargs
 ):
-    if use_to_html or isinstance(df, pd_style.Styler):
+    if use_to_html or (pd_style is not None and isinstance(df, pd_style.Styler)):
         return to_html_datatable_using_to_html(
             df=df,
             caption=caption,
@@ -445,7 +453,7 @@ def to_html_datatable_using_to_html(
         # default UUID in Pandas styler objects has uuid_len=5
         or str(uuid.uuid4())[:5]
     )
-    if isinstance(df, pd_style.Styler):
+    if pd_style is not None and isinstance(df, pd_style.Styler):
         if not showIndex:
             try:
                 df = df.hide()

itables/version.py

@@ -1,3 +1,3 @@
 """ITables' version number"""
 
-__version__ = "1.6.1"
+__version__ = "1.6.2"

tests/test_documentation_notebooks_run.py

@@ -5,6 +5,7 @@
 import pytest
 
 from itables import init_notebook_mode
+from itables.javascript import pd_style
 
 try:
     import polars as pl
@@ -27,6 +28,8 @@ def list_doc_notebooks():
 def test_run_documentation_notebooks(notebook):
     if "polars" in notebook.stem and pl is None:
         pytest.skip(msg="Polars is not available")
+    if "pandas_style" in notebook.stem and pd_style is None:
+        pytest.skip(msg="Pandas Style is not available")
 
     nb = jupytext.read(notebook)
     py_notebook = jupytext.writes(nb, "py:percent")

tests/test_sample_dfs.py

@@ -6,6 +6,7 @@
 
 from itables import show, to_html_datatable
 from itables.datatables_format import _format_column, generate_encoder
+from itables.javascript import pd_style
 from itables.sample_dfs import (
     COLUMN_TYPES,
     PANDAS_VERSION_MAJOR,
@@ -58,6 +59,10 @@ def test_get_indicators(connected, use_to_html):
     sys.version_info < (3, 7),
     reason="AttributeError: 'Styler' object has no attribute 'to_html'",
 )
+@pytest.mark.skipif(
+    pd_style is None,
+    reason="Missing optional dependency 'Jinja2'. DataFrame.style requires jinja2.",
+)
 def test_get_pandas_styler(connected, use_to_html):
     styler = get_pandas_styler()
     show(styler, connected=connected, use_to_html=use_to_html)