diff --git a/.github/workflows/pytest.yaml b/.github/workflows/pytest.yaml
index cae59ac5d..0fff3445d 100644
--- a/.github/workflows/pytest.yaml
+++ b/.github/workflows/pytest.yaml
@@ -30,16 +30,7 @@ jobs:
         - "3.12"
         - "3.13"  # Latest supported by ixmp
         gams-version:
-        # Version used until 2024-07; disabled
-        # - 25.1.1
-        # First version including a macOS arm64 distribution
-        - 43.4.1
-
-        # commented: force a specific version of pandas, for e.g. pre-release
-        # testing
-        # pandas-version:
-        # - ""
-        # - "==2.0.0rc0"
+        - "43.4.1"  # First version including a macOS arm64 distribution
 
         exclude:
         # Specific version combinations that are invalid / not to be used
@@ -55,8 +46,6 @@ jobs:
 
     runs-on: ${{ matrix.os }}
     name: ${{ matrix.os }}-py${{ matrix.python-version }}
-    # commented: use with "pandas-version" in the matrix, above
-    # name: ${{ matrix.os }}-py${{ matrix.python-version }}-pandas${{ matrix.pandas-version }}
 
     steps:
     - uses: actions/checkout@v4
@@ -64,20 +53,22 @@ jobs:
         fetch-depth: ${{ env.depth }}
         fetch-tags: true
 
-    - uses: actions/setup-python@v5
+    - name: TEMPORARY Work around actions/checkout#2041
+      run: git fetch --tags
+
+    - name: Set up uv, Python
+      uses: astral-sh/setup-uv@v5
       with:
+        cache-dependency-glob: "**/pyproject.toml"
         python-version: ${{ matrix.python-version }}
-        cache: pip
-        cache-dependency-path: "**/pyproject.toml"
 
     - uses: ts-graphviz/setup-graphviz@v2
-      # TEMPORARY Work around ts-graphviz/setup-graphviz#630
-      if: ${{ ! startswith(matrix.os, 'macos-') }}
+      # Work around ts-graphviz/setup-graphviz#630
+      if: matrix.os != 'macos-13'
 
     - uses: r-lib/actions/setup-r@v2
       id: setup-r
-      with:
-        r-version: "4.4.1"
+      with: { r-version: "4.4.1" }
 
     - name: Cache GAMS installer and R packages
       uses: actions/cache@v4
@@ -95,45 +86,21 @@ jobs:
         license: ${{ secrets.GAMS_LICENSE }}
 
     - name: Set RETICULATE_PYTHON
-      # Use the environment variable set by the setup-python action, above.
-      run: echo "RETICULATE_PYTHON=$pythonLocation" >> $GITHUB_ENV
+      # Retrieve the Python executable set up above
+      run: echo "RETICULATE_PYTHON=$(uv python find)" >> $GITHUB_ENV
       shell: bash
 
-    - name: Install Python package and dependencies
-      # [docs] contains [tests], which contains [report,tutorial]
-      run: |
-        pip install .[docs]
-
-        # commented: use with "pandas-version" in the matrix, above
-        # pip install --upgrade pandas${{ matrix.pandas-version }}
-
-        # TEMPORARY With Python 3.13 pyam-iamc resolves to 1.3.1, which in turn
-        # limits pint < 0.17. Override. cf. iiasa/ixmp#544
-        pip install --upgrade pint
+    - name: Install the package and dependencies
+      # [docs] requires [tests] which requires [report,tutorial]
+      run: uv pip install .[docs]
 
-    - name: Install R dependencies and tutorial requirements
-      # Workaround for https://github.com/actions/runner-images/issues/11137
-      if: ${{ matrix.os == 'ubuntu-latest' && matrix.python-version == '3.12' }}
-      run: |
-        install.packages(c("remotes", "Rcpp"))
-        remotes::install_cran(
-          c("IRkernel", "reticulate"),
-          dependencies = TRUE,
-          # force = TRUE,
-        )
-
-        reticulate::py_config()
-      shell: Rscript {0}
+    - name: "Install libpng-dev"  # for R 'png', required by reticulate
+      if: startsWith(matrix.os, 'ubuntu-')
+      run: sudo apt install libpng-dev
 
     - name: Install R dependencies and tutorial requirements
-      if: ${{ ! (matrix.os == 'ubuntu-latest' && matrix.python-version == '3.12') }}
       run: |
-        install.packages(c("remotes", "Rcpp"))
-        remotes::install_cran(
-          c("IRkernel", "reticulate"),
-          dependencies = TRUE,
-          # force = TRUE,
-        )
+        install.packages(c("IRkernel", "reticulate"))
 
         # commented: for debugging
         # print(reticulate::py_config())
@@ -142,23 +109,20 @@ jobs:
         IRkernel::installspec()
       shell: Rscript {0}
 
-    - name: Run test suite using pytest
+    - name: Run tests
       run: |
-        pytest ixmp \
+        uv run --no-sync \
+          pytest ixmp \
           -m "not performance" \
-          --color=yes -rA --verbose \
+          --color=yes --durations=20 -rA --verbose \
           --cov-report=xml \
           --numprocesses=auto --dist=loadgroup
       shell: bash
 
     - name: Upload test coverage to Codecov.io
       uses: codecov/codecov-action@v5
-      # FIXME Limit runtime until
-      # https://github.com/codecov/codecov-action/issues/1316 is resolved
-      timeout-minutes: 1
-      continue-on-error: true
       with:
-        token: ${{ secrets.CODECOV_TOKEN }} # required
+        token: ${{ secrets.CODECOV_TOKEN}}
 
   pre-commit:
     name: Code quality
@@ -167,12 +131,11 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - uses: actions/setup-python@v5
-      with: { python-version: "3.12" }
-
-    - name: Force recreation of pre-commit virtual environment for mypy
-      if: github.event_name == 'schedule'
-      run: gh cache list -L 999 | cut -f2 | grep pre-commit | xargs -I{} gh cache delete "{}" || true
-      env: { GH_TOKEN: "${{ github.token }}" }
-
-    - uses: pre-commit/action@v3.0.1
+    - uses: astral-sh/setup-uv@v5
+      with: { cache-dependency-glob: "**/pyproject.toml" }
+    - uses: actions/cache@v4
+      with:
+        path: ~/.cache/pre-commit
+        key: pre-commit|${{ env.UV_PYTHON }}|${{ hashFiles('.pre-commit-config.yaml') }}
+        lookup-only: ${{ github.event_name == 'schedule' }}  # Set 'true' to recreate cache
+    - run: uvx pre-commit run --all-files --color=always --show-diff-on-failure
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 89b28ca82..8cb52c583 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,27 +1,20 @@
 repos:
-- repo: local
+- repo: https://github.com/pre-commit/mirrors-mypy
+  rev: v1.14.1
   hooks:
   - id: mypy
-    name: mypy
-    always_run: true
-    require_serial: true
     pass_filenames: false
-
-    language: python
-    entry: bash -c ". ${PRE_COMMIT_MYPY_VENV:-/dev/null}/bin/activate 2>/dev/null; mypy $0 $@"
     additional_dependencies:
-    - mypy >= 1.9.0
     - genno
     - GitPython
     - nbclient
     - pandas-stubs
     - pytest
-    - sphinx
+    - Sphinx
     - werkzeug
     - xarray
-    args: ["."]
 - repo: https://github.com/astral-sh/ruff-pre-commit
-  rev: v0.3.4
+  rev: v0.9.1
   hooks:
   - id: ruff
   - id: ruff-format
diff --git a/README.md b/README.md
index 359a98659..5bcb4e5a9 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@ See [`doc/README.rst`](doc/README.rst) for further details.
 
 ## License
 
-Copyright © 2017–2024 IIASA Energy, Climate, and Environment (ECE) program
+Copyright © 2017–2025 IIASA Energy, Climate, and Environment (ECE) program
 
 `ixmp` is licensed under the Apache License, Version 2.0 (the "License"); you
 may not use the files in this repository except in compliance with the License.
diff --git a/doc/conf.py b/doc/conf.py
index a705e4c2c..57c34ddfa 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -10,7 +10,7 @@
 # -- Project information ---------------------------------------------------------------
 
 project = "ixmp"
-copyright = "2017–2024, IIASA Energy, Climate, and Environment (ECE) program"
+copyright = "2017–%Y, IIASA Energy, Climate, and Environment (ECE) program"
 author = "ixmp Developers"
 
 
diff --git a/ixmp/backend/jdbc.py b/ixmp/backend/jdbc.py
index 5c4e83ad8..ac8c864dc 100644
--- a/ixmp/backend/jdbc.py
+++ b/ixmp/backend/jdbc.py
@@ -170,7 +170,7 @@ def _domain_enum(domain):
         return domain_enum.valueOf(domain.upper())
     except java.IllegalArgumentException:
         domains = ", ".join([d.name().lower() for d in domain_enum.values()])
-        raise ValueError(f"No such domain: {domain}, " f"existing domains: {domains}")
+        raise ValueError(f"No such domain: {domain}, existing domains: {domains}")
 
 
 def _unwrap(v):
@@ -886,8 +886,7 @@ def clone(
         # Raise exceptions for limitations of JDBCBackend
         if not isinstance(platform_dest._backend, self.__class__):
             raise NotImplementedError(  # pragma: no cover
-                f"Clone between {self.__class__} and"
-                f"{platform_dest._backend.__class__}"
+                f"Clone between {self.__class__} and{platform_dest._backend.__class__}"
             )
         elif platform_dest._backend is not self:
             package = s.__class__.__module__.split(".")[0]
diff --git a/ixmp/cli.py b/ixmp/cli.py
index d4649d28b..9fa61d28c 100644
--- a/ixmp/cli.py
+++ b/ixmp/cli.py
@@ -91,7 +91,7 @@ def report(context, config, key):
 
     if not context:
         raise click.UsageError(
-            "give either --url, --platform or --dbprops " "before command report"
+            "give either --url, --platform or --dbprops before command report"
         )
 
     # Instantiate the Reporter with the Scenario loaded by main()
@@ -227,8 +227,7 @@ def import_group(context):
     """
     if not context or "scen" not in context:
         raise click.UsageError(
-            "give --url, or --platform, --model, and "
-            "--scenario, before command import"
+            "give --url, or --platform, --model, and --scenario, before command import"
         )
 
 
@@ -407,7 +406,7 @@ def list_scenarios(context, **kwargs):
 
     if not context:
         raise click.UsageError(
-            "give either --url, --platform or --dbprops " "before command list"
+            "give either --url, --platform or --dbprops before command list"
         )
 
     print(
diff --git a/ixmp/tests/backend/test_jdbc.py b/ixmp/tests/backend/test_jdbc.py
index efc765c27..3642ee80c 100644
--- a/ixmp/tests/backend/test_jdbc.py
+++ b/ixmp/tests/backend/test_jdbc.py
@@ -373,8 +373,7 @@ def test_verbose_exception(test_mp, exception_verbose_true):
 
     exc_msg = exc_info.value.args[0]
     assert (
-        "There exists no Scenario 'foo|bar' "
-        "(version: -1)  in the database!" in exc_msg
+        "There exists no Scenario 'foo|bar' (version: -1)  in the database!" in exc_msg
     )
     assert "at.ac.iiasa.ixmp.database.DbDAO.getRunId" in exc_msg
     assert "at.ac.iiasa.ixmp.Platform.getScenario" in exc_msg
@@ -595,7 +594,7 @@ def test_reload_cycle(
         mp = ixmp.Platform(**platform_args)
 
         # Load existing Scenario
-        s0 = ixmp.Scenario(mp, model="foo", scenario=f"bar {i-1}", version=1)
+        s0 = ixmp.Scenario(mp, model="foo", scenario=f"bar {i - 1}", version=1)
 
         memory_usage(f"pass {i} -- platform instantiated")
 
diff --git a/ixmp/tests/core/test_scenario.py b/ixmp/tests/core/test_scenario.py
index 3592280f0..f2b17b1ef 100644
--- a/ixmp/tests/core/test_scenario.py
+++ b/ixmp/tests/core/test_scenario.py
@@ -137,7 +137,7 @@ def test_init_set(self, scen):
         # Add set on a locked scenario
         with pytest.raises(
             RuntimeError,
-            match="This Scenario cannot be edited" ", do a checkout first!",
+            match="This Scenario cannot be edited, do a checkout first!",
         ):
             scen.init_set("foo")
 
@@ -399,7 +399,7 @@ def test_excel_io(self, scen, scen_empty, tmp_path, caplog):
 
         # With init_items=False, can't be read into an empty Scenario.
         # Exception raised is the first index set, alphabetically
-        with pytest.raises(ValueError, match="no set 'i'; " "try init_items=True"):
+        with pytest.raises(ValueError, match="no set 'i'; try init_items=True"):
             scen_empty.read_excel(tmp_path)
 
         # File can be read with init_items=True
@@ -441,7 +441,7 @@ def test_excel_io(self, scen, scen_empty, tmp_path, caplog):
 
         # Fails with add_units=False
         with pytest.raises(
-            ValueError, match="The unit 'pounds' does not exist" " in the database!"
+            ValueError, match="The unit 'pounds' does not exist in the database!"
         ):
             s.read_excel(tmp_path, init_items=True)
 
@@ -623,7 +623,7 @@ def test_set(scen_empty) -> None:
         scen.add_set("i", ["i9", "extra"], ["i9 comment"])
     # Missing element in the index set
     with pytest.raises(
-        ValueError, match="The index set 'i' does not have an " "element 'bar'!"
+        ValueError, match="The index set 'i' does not have an element 'bar'!"
     ):
         scen.add_set("foo", "bar")
 
diff --git a/pyproject.toml b/pyproject.toml
index ede4e147c..13989297e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -82,8 +82,9 @@ exclude_also = [
 omit = ["ixmp/util/sphinx_linkcode_github.py"]
 
 [tool.mypy]
-exclude = [
-  "build/",
+files = [
+  "doc",
+  "ixmp",
 ]
 
 [[tool.mypy.overrides]]
diff --git a/tutorial/transport/py_transport.ipynb b/tutorial/transport/py_transport.ipynb
index efac6e40d..a36cd9fa6 100644
--- a/tutorial/transport/py_transport.ipynb
+++ b/tutorial/transport/py_transport.ipynb
@@ -54,8 +54,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# load required packages \n",
+    "# Import required packages\n",
     "import pandas as pd\n",
+    "\n",
     "import ixmp"
    ]
   },
@@ -65,7 +66,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# launch the ix modeling platform using the default back end\n",
+    "# Launch the ix modeling platform using the default back end\n",
     "mp = ixmp.Platform()\n",
     "\n",
     "# The following lines have the same effect:\n",
@@ -79,14 +80,14 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# details for creating a new scenario in the ix modeling platform                                                                                                                                                     \n",
+    "# details for creating a new scenario in the ix modeling platform\n",
     "model = \"transport problem\"\n",
     "scenario = \"standard\"\n",
-    "annot = \"Dantzig's transportation problem for illustration and testing\"   \n",
+    "annot = \"Dantzig's transportation problem for illustration and testing\"\n",
     "\n",
     "# initialize a new ixmp.Scenario\n",
     "# the parameter version='new' indicates that this is a new scenario instamce\n",
-    "scen = ixmp.Scenario(mp, model, scenario, version='new', annotation=annot)"
+    "scen = ixmp.Scenario(mp, model, scenario, version=\"new\", annotation=annot)"
    ]
   },
   {
@@ -114,11 +115,11 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# define the sets of locations of canning plants and markets                                                                                                                          \n",
+    "# define the sets of locations of canning plants and markets\n",
     "scen.init_set(\"i\")\n",
     "scen.add_set(\"i\", [\"seattle\", \"san-diego\"])\n",
     "scen.init_set(\"j\")\n",
-    "scen.add_set(\"j\", [\"new-york\", \"chicago\", \"topeka\"])                                                                                                                                    "
+    "scen.add_set(\"j\", [\"new-york\", \"chicago\", \"topeka\"])"
    ]
   },
   {
@@ -128,7 +129,7 @@
    "outputs": [],
    "source": [
     "# display the set 'i'\n",
-    "scen.set('i')"
+    "scen.set(\"i\")"
    ]
   },
   {
@@ -161,19 +162,19 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# capacity of plant i in cases                                                                                                                                                           \n",
-    "# add parameter elements one-by-one (string and value)                                                                                                                                   \n",
+    "# capacity of plant i in cases\n",
+    "# add parameter elements one-by-one (string and value)\n",
     "scen.init_par(\"a\", idx_sets=\"i\")\n",
     "scen.add_par(\"a\", \"seattle\", 350, \"cases\")\n",
     "scen.add_par(\"a\", \"san-diego\", 600, \"cases\")\n",
     "\n",
-    "# demand at market j in cases                                                                                                                                                            \n",
-    "# add parameter elements as dataframe (with index names)                                                                                                                                 \n",
+    "# demand at market j in cases\n",
+    "# add parameter elements as dataframe (with index names)\n",
     "scen.init_par(\"b\", idx_sets=\"j\")\n",
     "b_data = [\n",
-    "    {'j': \"new-york\", 'value': 325, 'unit': \"cases\"},\n",
-    "    {'j': \"chicago\",  'value': 300, 'unit': \"cases\"},\n",
-    "    {'j': \"topeka\",   'value': 275, 'unit': \"cases\"}\n",
+    "    {\"j\": \"new-york\", \"value\": 325, \"unit\": \"cases\"},\n",
+    "    {\"j\": \"chicago\", \"value\": 300, \"unit\": \"cases\"},\n",
+    "    {\"j\": \"topeka\", \"value\": 275, \"unit\": \"cases\"},\n",
     "]\n",
     "b = pd.DataFrame(b_data)\n",
     "scen.add_par(\"b\", b)"
@@ -185,7 +186,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "scen.par('b')"
+    "scen.par(\"b\")"
    ]
   },
   {
@@ -204,14 +205,14 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# distance in thousands of miles                                                                                                                                                         \n",
+    "# distance in thousands of miles\n",
     "scen.init_par(\"d\", idx_sets=[\"i\", \"j\"])\n",
-    "# add more parameter elements as dataframe by index names                                                                                                                                \n",
+    "# add more parameter elements as dataframe by index names\n",
     "d_data = [\n",
-    "    {'i': \"seattle\", 'j': \"new-york\", 'value': 2.5, 'unit': \"km\"},\n",
-    "    {'i': \"seattle\", 'j': \"chicago\", 'value': 1.7, 'unit': \"km\"},\n",
-    "    {'i': \"seattle\", 'j': \"topeka\", 'value': 1.8, 'unit': \"km\"},\n",
-    "    {'i': \"san-diego\", 'j': \"new-york\", 'value': 2.5, 'unit': \"km\"},\n",
+    "    {\"i\": \"seattle\", \"j\": \"new-york\", \"value\": 2.5, \"unit\": \"km\"},\n",
+    "    {\"i\": \"seattle\", \"j\": \"chicago\", \"value\": 1.7, \"unit\": \"km\"},\n",
+    "    {\"i\": \"seattle\", \"j\": \"topeka\", \"value\": 1.8, \"unit\": \"km\"},\n",
+    "    {\"i\": \"san-diego\", \"j\": \"new-york\", \"value\": 2.5, \"unit\": \"km\"},\n",
     "]\n",
     "d = pd.DataFrame(d_data)\n",
     "scen.add_par(\"d\", d)\n",
@@ -223,9 +224,13 @@
   },
   {
    "cell_type": "raw",
-   "metadata": {},
+   "metadata": {
+    "vscode": {
+     "languageId": "raw"
+    }
+   },
    "source": [
-    "Scalar f  freight in dollars per case per thousand miles  /90/ ;   "
+    "Scalar f  freight in dollars per case per thousand miles  /90/ ;"
    ]
   },
   {
@@ -234,8 +239,8 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# cost per case per 1000 miles                                                                                                                                                           \n",
-    "# initialize scalar with a value and a unit (and optionally a comment)                                                                                                                   \n",
+    "# cost per case per 1000 miles\n",
+    "# initialize scalar with a value and a unit (and optionally a comment)\n",
     "scen.init_scalar(\"f\", 90.0, \"USD/km\")"
    ]
   },
@@ -255,8 +260,8 @@
     "# commit new scenario to the database\n",
     "# no changes can then be made to the scenario data until a check-out is performed\n",
     "comment = \"importing Dantzig's transport problem for illustration\"\n",
-    "comment += \" and testing of the Python interface using a generic datastructure\"                                                                                                                                                                            \n",
-    "scen.commit(comment)      \n",
+    "comment += \" and testing of the Python interface using a generic datastructure\"\n",
+    "scen.commit(comment)\n",
     "\n",
     "# set this new scenario as the default version for the model/scenario name\n",
     "scen.set_as_default()"
@@ -273,12 +278,16 @@
   },
   {
    "cell_type": "raw",
-   "metadata": {},
+   "metadata": {
+    "vscode": {
+     "languageId": "raw"
+    }
+   },
    "source": [
     "Variables\n",
     "     x(i,j)  shipment quantities in cases\n",
     "     z       total transportation costs in thousands of dollars ;\n",
-    "     \n",
+    "\n",
     "Equations\n",
     "     cost        define objective function\n",
     "     supply(i)   observe supply limit at plant i\n",
@@ -321,7 +330,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "scen.solve(model='dantzig')"
+    "scen.solve(model=\"dantzig\")"
    ]
   },
   {
@@ -357,7 +366,8 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# display the quantities and marginals (=shadow prices) of the demand balance constraints\n",
+    "# Display the quantities and marginals (=shadow prices) of the demand balance\n",
+    "# constraints\n",
     "scen.equ(\"demand\")"
    ]
   },
diff --git a/tutorial/transport/py_transport_scenario.ipynb b/tutorial/transport/py_transport_scenario.ipynb
index 23d2e075c..e75cd95ba 100644
--- a/tutorial/transport/py_transport_scenario.ipynb
+++ b/tutorial/transport/py_transport_scenario.ipynb
@@ -38,8 +38,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# load required packages\n",
-    "import pandas as pd\n",
+    "# Import required packages\n",
     "import ixmp"
    ]
   },
@@ -60,8 +59,8 @@
    "outputs": [],
    "source": [
     "# Model and scenario name for Dantzig's transport problem\n",
-    "model = 'canning problem'\n",
-    "scenario = 'standard'"
+    "model = \"canning problem\"\n",
+    "scenario = \"standard\""
    ]
   },
   {
@@ -106,7 +105,8 @@
    "outputs": [],
    "source": [
     "from ixmp.testing import make_dantzig\n",
-    "scen = make_dantzig(mp, solve='.')"
+    "\n",
+    "scen = make_dantzig(mp, solve=\".\")"
    ]
   },
   {
@@ -135,8 +135,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# show only the distances for connections from Seattle by filtering the pandas.DataFrame returned above\n",
-    "d[d['i'] == \"seattle\"]"
+    "# Show only the distances for connections from Seattle by filtering the pandas.DataFrame\n",
+    "# returned above\n",
+    "d[d[\"i\"] == \"seattle\"]"
    ]
   },
   {
@@ -148,8 +149,8 @@
     "# for faster access or more complex filtering,\n",
     "# it may be easier to only load specific parameter elements using a dictionary\n",
     "ele_filter = {}\n",
-    "ele_filter['i'] = ['seattle']\n",
-    "ele_filter['j'] = ['chicago', 'topeka']\n",
+    "ele_filter[\"i\"] = [\"seattle\"]\n",
+    "ele_filter[\"j\"] = [\"chicago\", \"topeka\"]\n",
     "\n",
     "d_filtered = scen.par(\"d\", ele_filter)\n",
     "d_filtered"
@@ -172,7 +173,12 @@
    "outputs": [],
    "source": [
     "# create a new scenario by cloning the scenario (without keeping the solution)\n",
-    "scen_detroit = scen.clone(model=model, scenario='detroit', annotation='extend the Transport problem by a new city', keep_solution=False)"
+    "scen_detroit = scen.clone(\n",
+    "    model=model,\n",
+    "    scenario=\"detroit\",\n",
+    "    annotation=\"extend the Transport problem by a new city\",\n",
+    "    keep_solution=False,\n",
+    ")"
    ]
   },
   {
@@ -192,13 +198,13 @@
    "outputs": [],
    "source": [
     "# reduce demand in chicago\n",
-    "scen_detroit.add_par('b', 'chicago', 200, 'cases')\n",
+    "scen_detroit.add_par(\"b\", \"chicago\", 200, \"cases\")\n",
     "\n",
     "# add a new city with demand and distances\n",
-    "scen_detroit.add_set('j', 'detroit')\n",
-    "scen_detroit.add_par('b', 'detroit', 150, 'cases')\n",
-    "scen_detroit.add_par('d', ['seattle', 'detroit'], 1.7, 'cases')\n",
-    "scen_detroit.add_par('d', ['san-diego', 'detroit'], 1.9, 'cases')"
+    "scen_detroit.add_set(\"j\", \"detroit\")\n",
+    "scen_detroit.add_par(\"b\", \"detroit\", 150, \"cases\")\n",
+    "scen_detroit.add_par(\"d\", [\"seattle\", \"detroit\"], 1.7, \"cases\")\n",
+    "scen_detroit.add_par(\"d\", [\"san-diego\", \"detroit\"], 1.9, \"cases\")"
    ]
   },
   {
@@ -226,7 +232,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "scen_detroit.solve(model='dantzig')"
+    "scen_detroit.solve(model=\"dantzig\")"
    ]
   },
   {
@@ -249,21 +255,21 @@
    "outputs": [],
    "source": [
     "# display the objective value of the solution in the baseline scenario\n",
-    "scen.var('z')"
+    "scen.var(\"z\")"
    ]
   },
   {
    "cell_type": "code",
    "execution_count": null,
    "metadata": {
-     "jupyter": {
-      "name": "scen-detroit-z"
-     }
+    "jupyter": {
+     "name": "scen-detroit-z"
+    }
    },
    "outputs": [],
    "source": [
     "# display the objective value of the solution in the \"detroit\" scenario\n",
-    "scen_detroit.var('z')"
+    "scen_detroit.var(\"z\")"
    ]
   },
   {
@@ -272,8 +278,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# display the quantities transported from canning plants to demand locations in the baseline scenario\n",
-    "scen.var('x')"
+    "# Display the quantities transported from canning plants to demand locations in the\n",
+    "# baseline scenario\n",
+    "scen.var(\"x\")"
    ]
   },
   {
@@ -282,8 +289,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# display the quantities transported from canning plants to demand locations in the \"detroit\" scenario\n",
-    "scen_detroit.var('x')"
+    "# Display the quantities transported from canning plants to demand locations in the\n",
+    "# \"detroit\" scenario\n",
+    "scen_detroit.var(\"x\")"
    ]
   },
   {
@@ -292,7 +300,8 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# display the quantities and marginals (=shadow prices) of the demand balance constraints in the baseline scenario\n",
+    "# Display the quantities and marginals (=shadow prices) of the demand balance\n",
+    "# constraints in the baseline scenario\n",
     "scen.equ(\"demand\")"
    ]
   },
@@ -302,7 +311,8 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# display the quantities and marginals (=shadow prices) of the demand balance constraints in the \"detroit\" scenario\n",
+    "# Display the quantities and marginals (=shadow prices) of the demand balance\n",
+    "# constraints in the \"detroit\" scenario\n",
     "scen_detroit.equ(\"demand\")"
    ]
   },