fix: Keep trailing newlines in generated files [#646, #654]. Thanks @eliask!

Co-authored-by: Elias Kunnas <[email protected]>

Author: dbanty

end_to_end_tests/golden-record/.gitignore

@@ -20,4 +20,4 @@ dmypy.json
 .idea/
 
 /coverage.xml
-/.coverage
+/.coverage

end_to_end_tests/golden-record/README.md

@@ -84,4 +84,4 @@ If you want to install this client into another project without publishing it (e
 1. If that project **is using Poetry**, you can simply do `poetry add <path-to-this-client>` from that project
 1. If that project is not using Poetry:
     1. Build a wheel with `poetry build -f wheel`
-    1. Install that wheel from the other project `pip install <path-to-wheel>`
+    1. Install that wheel from the other project `pip install <path-to-wheel>`

end_to_end_tests/golden-record/pyproject.toml

@@ -36,4 +36,4 @@ exclude = '''
 
 [tool.isort]
 line_length = 120
-profile = "black"
+profile = "black"

openapi_python_client/__init__.py

@@ -74,7 +74,11 @@ def __init__(
         else:
             loader = package_loader
         self.env: Environment = Environment(
-            loader=loader, trim_blocks=True, lstrip_blocks=True, extensions=["jinja2.ext.loopcontrols"]
+            loader=loader,
+            trim_blocks=True,
+            lstrip_blocks=True,
+            extensions=["jinja2.ext.loopcontrols"],
+            keep_trailing_newline=True,
         )
 
         self.project_name: str = config.project_name_override or f"{utils.kebab_case(openapi.title).lower()}-client"