Rename version.py files to version/__init__.py (open-telemetry#4099)

* Rename version.py files to version/__init__.py

Fixes open-telemetry#4097

* Use a better variable name

Author: ocelotl

.github/workflows/prepare-release-branch.yml

@@ -41,6 +41,9 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Install toml
+        run: pip install toml
+
       - name: Create release branch
         env:
           PRERELEASE_VERSION: ${{ github.event.inputs.prerelease_version }}
@@ -105,6 +108,9 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Install toml
+        run: pip install toml
+
       - name: Set environment variables
         env:
           PRERELEASE_VERSION: ${{ github.event.inputs.prerelease_version }}

docs/examples/error_handler/error_handler_0/pyproject.toml

@@ -32,7 +32,7 @@ dependencies = [
 error_handler_0 = "error_handler_0:ErrorHandler0"
 
 [tool.hatch.version]
-path = "src/error_handler_0/version.py"
+path = "src/error_handler_0/version/__init__.py"
 
 [tool.hatch.build.targets.sdist]
 include = [

docs/examples/error_handler/error_handler_0/src/error_handler_0/version.py renamed to docs/examples/error_handler/error_handler_0/src/error_handler_0/version/__init__.py

@@ -32,7 +32,7 @@ dependencies = [
 error_handler_1 = "error_handler_1:ErrorHandler1"
 
 [tool.hatch.version]
-path = "src/error_handler_1/version.py"
+path = "src/error_handler_1/version/__init__.py"
 
 [tool.hatch.build.targets.sdist]
 include = [

docs/examples/error_handler/error_handler_1/pyproject.toml

@@ -43,7 +43,7 @@ opencensus = "opentelemetry.exporter.opencensus.trace_exporter:OpenCensusSpanExp
 Homepage = "https://github.com/open-telemetry/opentelemetry-python/tree/main/exporter/opentelemetry-exporter-opencensus"
 
 [tool.hatch.version]
-path = "src/opentelemetry/exporter/opencensus/version.py"
+path = "src/opentelemetry/exporter/opencensus/version/__init__.py"
 
 [tool.hatch.build.targets.sdist]
 include = [

docs/examples/error_handler/error_handler_1/src/error_handler_1/version.py renamed to docs/examples/error_handler/error_handler_1/src/error_handler_1/version/__init__.py

@@ -34,7 +34,7 @@ dependencies = [
 Homepage = "https://github.com/open-telemetry/opentelemetry-python/tree/main/exporter/opentelemetry-exporter-otlp-proto-common"
 
 [tool.hatch.version]
-path = "src/opentelemetry/exporter/otlp/proto/common/version.py"
+path = "src/opentelemetry/exporter/otlp/proto/common/version/__init__.py"
 
 [tool.hatch.build.targets.sdist]
 include = [

exporter/opentelemetry-exporter-opencensus/pyproject.toml

@@ -49,7 +49,7 @@ otlp_proto_grpc = "opentelemetry.exporter.otlp.proto.grpc.trace_exporter:OTLPSpa
 Homepage = "https://github.com/open-telemetry/opentelemetry-python/tree/main/exporter/opentelemetry-exporter-otlp-proto-grpc"
 
 [tool.hatch.version]
-path = "src/opentelemetry/exporter/otlp/proto/grpc/version.py"
+path = "src/opentelemetry/exporter/otlp/proto/grpc/version/__init__.py"
 
 [tool.hatch.build.targets.sdist]
 include = [