[pull] master from Backblaze:master

.github/workflows/cd.yml

@@ -6,6 +6,7 @@ on:
 
 env:
   PYTHON_DEFAULT_VERSION: "3.12"
+  UV_VERSION: "0.8.24"
 
 jobs:
   deploy:
@@ -26,13 +27,17 @@ jobs:
         uses: actions/setup-python@v6
         with:
           python-version: ${{ env.PYTHON_DEFAULT_VERSION }}
+      - uses: astral-sh/setup-uv@v7
+        with:
+          version: ${{ env.UV_VERSION }}
+          enable-cache: true
       - name: Display Python version
         run: python -c "import sys; print(sys.version)"
       - name: Install dependencies
-        run: python -m pip install --upgrade nox pdm==2.26.2
+        run: uv sync --only-group nox --locked
       - name: Build the distribution
         id: build
-        run: nox -vs build
+        run: uv run nox -vs build
       - name: Read the Changelog
         id: read-changelog
         uses: mindsers/changelog-reader-action@v2

.github/workflows/ci.yml

@@ -8,6 +8,7 @@ on:
 
 env:
   PYTHON_DEFAULT_VERSION: "3.12"
+  UV_VERSION: "0.8.24"
 
 jobs:
   lint:
@@ -24,17 +25,20 @@ jobs:
         uses: actions/setup-python@v6
         with:
           python-version: ${{ env.PYTHON_DEFAULT_VERSION }}
-          cache: "pip"
+      - uses: astral-sh/setup-uv@v7
+        with:
+          version: ${{ env.UV_VERSION }}
+          enable-cache: true
       - name: Install dependencies
-        run: python -m pip install --upgrade nox pdm==2.26.2
+        run: uv sync --only-group nox --locked
       - name: Run linters
-        run: nox -vs lint
+        run: uv run nox -vs lint
       - name: Validate new changelog entries
         if: (contains(github.event.pull_request.labels.*.name, '-changelog') == false) && (github.event.pull_request.base.ref != '')
         run: if [ -z "$(git diff --diff-filter=A --name-only origin/${{ github.event.pull_request.base.ref }} changelog.d)" ];
           then echo no changelog item added; exit 1; fi
       - name: Changelog validation
-        run: nox -vs towncrier_check
+        run: uv run nox -vs towncrier_check
   build:
     timeout-minutes: 30
     needs: lint
@@ -47,11 +51,14 @@ jobs:
         uses: actions/setup-python@v6
         with:
           python-version: ${{ env.PYTHON_DEFAULT_VERSION }}
-          cache: "pip"
+      - uses: astral-sh/setup-uv@v7
+        with:
+          version: ${{ env.UV_VERSION }}
+          enable-cache: true
       - name: Install dependencies
-        run: python -m pip install --upgrade nox pdm==2.26.2
+        run: uv sync --only-group nox --locked
       - name: Build the distribution
-        run: nox -vs build
+        run: uv run nox -vs build
   cleanup_buckets:
     timeout-minutes: 30
     needs: lint
@@ -69,13 +76,17 @@ jobs:
         uses: actions/setup-python@v6
         with:
           python-version: ${{ env.PYTHON_DEFAULT_VERSION }}
-          cache: "pip"
+      - uses: astral-sh/setup-uv@v7
+        if: ${{ env.B2_TEST_APPLICATION_KEY != '' && env.B2_TEST_APPLICATION_KEY_ID != '' }}  # TODO: skip this whole job instead
+        with:
+          version: ${{ env.UV_VERSION }}
+          enable-cache: true
       - name: Install dependencies
         if: ${{ env.B2_TEST_APPLICATION_KEY != '' && env.B2_TEST_APPLICATION_KEY_ID != '' }}  # TODO: skip this whole job instead
-        run: python -m pip install --upgrade nox pdm==2.26.2
+        run: uv sync --only-group nox --locked
       - name: Find and remove old buckets
         if: ${{ env.B2_TEST_APPLICATION_KEY != '' && env.B2_TEST_APPLICATION_KEY_ID != '' }}  # TODO: skip this whole job instead
-        run: nox -vs cleanup_old_buckets
+        run: uv run nox -vs cleanup_old_buckets
   test:
     timeout-minutes: 90
     needs: cleanup_buckets
@@ -107,14 +118,17 @@ jobs:
         uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
-          cache: "pip"
+      - uses: astral-sh/setup-uv@v7
+        with:
+          version: ${{ env.UV_VERSION }}
+          enable-cache: true
       - name: Install dependencies
-        run: python -m pip install --upgrade nox pdm==2.26.2
+        run: uv sync --only-group nox --locked
       - name: Run unit tests
-        run: nox -vs unit -- -v
+        run: uv run nox -vs unit -- -v
       - name: Run integration tests
         if: ${{ env.B2_TEST_APPLICATION_KEY != '' && env.B2_TEST_APPLICATION_KEY_ID != '' }}
-        run: nox -vs integration -- --dont-cleanup-old-buckets -v
+        run: uv run nox -vs integration -- --dont-cleanup-old-buckets -v
   doc:
     timeout-minutes: 30
     needs: build
@@ -127,13 +141,17 @@ jobs:
         uses: actions/setup-python@v6
         with:
           python-version: ${{ env.PYTHON_DEFAULT_VERSION }}
-          cache: "pip"
-      - name: Install dependencies
+      - uses: astral-sh/setup-uv@v7
+        with:
+          version: ${{ env.UV_VERSION }}
+          enable-cache: true
+      - name: Install system dependencies
         env:
           DEBIAN_FRONTEND: noninteractive
         run: |
           sudo apt-get update -y
           sudo apt-get install -y graphviz plantuml
-          python -m pip install --upgrade nox pdm==2.26.2
+      - name: Install dependencies
+        run: uv sync --only-group nox --locked
       - name: Build the docs
-        run: nox --non-interactive -vs doc
+        run: uv run nox --non-interactive -vs doc

.readthedocs.yml

@@ -13,8 +13,8 @@ build:
     - graphviz
   jobs:
     post_create_environment:
-      - pip install pdm
-      - pdm export --format requirements --group doc --output requirements-doc.txt
+      - python -m pip install uv==0.8.4
+      - uv export --format requirements-txt --group doc --output-file requirements-doc.txt
 
 # Build documentation in the docs/ directory with Sphinx
 sphinx:

CHANGELOG.md

@@ -9,6 +9,24 @@ upcoming release can be found in [changelog.d](changelog.d).
 
 <!-- towncrier release notes start -->
 
+## [2.10.3](https://github.com/Backblaze/b2-sdk-python/releases/tag/v2.10.3) - 2026-02-23
+
+
+### Fixed
+
+- Address backwards compatibility issue for sqlite account info caused by the migration of schema to a new multi-bucket format.
+- Avoid http-level retries during upload requests.
+- Use `stat.S_ISDIR` check for local folder children scanning instead of `Path.is_dir` to account for an api change in Python 3.14.
+
+### Infrastructure
+
+- Bump pip version.
+- Migrate from pdm to uv.
+- Move pytest_plugins to top-level conftest (fix for newer pytest).
+- Set temporary directory as account info config dir in tests.
+- Use a separate nox dependency group for reprocible installs of nox in ci / cd.
+
+
 ## [2.10.2](https://github.com/Backblaze/b2-sdk-python/releases/tag/v2.10.2) - 2025-12-16
 
 

CONTRIBUTING.md

@@ -55,9 +55,9 @@ for a given github issue).
 
 ## Developer Info
 
-You'll need to have [nox](https://github.com/theacodes/nox) and [pdm](https://pdm-project.org/) installed:
+You'll need to have [nox](https://github.com/theacodes/nox) and [uv](https://docs.astral.sh/uv/) installed:
 
-* `pip install nox pdm`
+* `pip install nox uv`
 
 With `nox`, you can run different sessions (default are `lint` and `test`):
 
@@ -99,11 +99,11 @@ Given Python interpreters should be installed in the operating system or via [py
 
 ## Managing dependencies
 
-We use [pdm](https://pdm-project.org/) for managing dependencies and developing locally.
+We use [uv](https://docs.astral.sh/uv/) for managing dependencies and developing locally.
 If you want to change any of the project requirements (or requirement bounds) in `pyproject.toml`,
-make sure that `pdm.lock` file reflects those changes by using `pdm add`, `pdm update` or other
-commands - see [documentation](https://pdm-project.org/latest/). You can verify that lock file
-is up to date by running the linter.
+make sure that `uv.lock` file reflects those changes by using `uv add`, `uv lock` or other
+commands - see [documentation](https://docs.astral.sh/uv/). You can verify that the lock file
+is up to date by running `uv lock --check`.
 
 ## Linting
 

b2sdk/_internal/b2http.py

@@ -36,7 +36,6 @@
     B2ConnectionError,
     B2Error,
     B2RequestTimeout,
-    B2RequestTimeoutDuringUpload,
     BadDateFormat,
     BrokenPipe,
     ClockSkew,
@@ -254,7 +253,7 @@ def request(
         :param url: a URL to call
         :param headers: headers to send.
         :param data: raw bytes or a file-like object to send
-        :param try_count: a number of retries
+        :param try_count: a number of attempts
         :param params: a dict that will be converted to query string for GET requests or additional metadata for POST requests
         :param stream: if True, the response will be streamed
         :param _timeout: a timeout for the request in seconds if not default
@@ -355,14 +354,9 @@ def post_content_return_json(
         :param data: a file-like object to send
         :return: a dict that is the decoded JSON
         """
-        try:
-            return self.request_content_return_json(
-                'POST', url, headers, data, try_count, post_params, _timeout=_timeout
-            )
-        except B2RequestTimeout:
-            # this forces a token refresh, which is necessary if request is still alive
-            # on the server but has terminated for some reason on the client. See #79
-            raise B2RequestTimeoutDuringUpload()
+        return self.request_content_return_json(
+            'POST', url, headers, data, try_count, post_params, _timeout=_timeout
+        )
 
     def post_json_return_json(self, url, headers, params, try_count: int = TRY_COUNT_OTHER):
         """
@@ -423,7 +417,7 @@ def get_content(self, url, headers, try_count: int = TRY_COUNT_DOWNLOAD):
 
         :param str url: a URL to call
         :param dict headers: headers to send
-        :param int try_count: a number or retries
+        :param int try_count: a number of attempts
         :return: Context manager that returns an object that supports iter_content()
         """
         response = self.request(
@@ -456,7 +450,7 @@ def head_content(
 
         :param str url: a URL to call
         :param dict headers: headers to send
-        :param int try_count: a number or retries
+        :param int try_count: a number of attempts
         :return: HTTP response
         """
         return self.request('HEAD', url, headers=headers, try_count=try_count)
@@ -586,9 +580,13 @@ def _translate_and_retry(
         the exception is a retryable B2Error.
 
         :param fcn: request function to call
-        :param try_count: a number of retries
+        :param try_count: a number of attempts
         :param post_params: request parameters
         """
+
+        if try_count < 1:
+            raise ValueError('try_count must be >= 1')
+
         # For all but the last try, catch the exception.
         wait_time = 1.0
         max_wait_time = 64

b2sdk/_internal/raw_api.py

@@ -564,7 +564,7 @@ def _get_json(self, base_url: str, endpoint: str, auth: str, **params) -> JSON:
 
     def authorize_account(self, realm_url, application_key_id, application_key):
         auth = (
-            f"Basic {base64.b64encode(f'{application_key_id}:{application_key}'.encode()).decode()}"
+            f'Basic {base64.b64encode(f"{application_key_id}:{application_key}".encode()).decode()}'
         )
         return self._post_json(realm_url, 'b2_authorize_account', auth)
 
@@ -1071,7 +1071,12 @@ def upload_file(
             legal_hold=legal_hold,
             custom_upload_timestamp=custom_upload_timestamp,
         )
-        return self.b2_http.post_content_return_json(upload_url, headers, data_stream)
+        return self.b2_http.post_content_return_json(
+            upload_url,
+            headers,
+            data_stream,
+            try_count=1,
+        )
 
     def upload_part(
         self,
@@ -1097,7 +1102,12 @@ def upload_part(
             )
             server_side_encryption.add_to_upload_headers(headers)
 
-        return self.b2_http.post_content_return_json(upload_url, headers, data_stream)
+        return self.b2_http.post_content_return_json(
+            upload_url,
+            headers,
+            data_stream,
+            try_count=1,
+        )
 
     def copy_file(
         self,