Don't add a new line in one-line Numpy docstrings

pydocstringformatter/_formatting/formatters_numpydoc.py

@@ -100,7 +100,7 @@ def treat_sections(
         """Ensure proper spacing between sections."""
         for section_lines in sections.values():
             last_line = section_lines[-1]
-            if not (last_line == "" or last_line.isspace()):
+            if not (last_line == "" or last_line.isspace()) and len(sections) > 1:
                 section_lines.append("")
         return sections
 

tests/data/format/numpydoc/numpydoc_closing_quotes.args

@@ -0,0 +1,2 @@
+--style=numpydoc
+--no-closing-quotes

tests/data/format/numpydoc/numpydoc_closing_quotes.py

@@ -0,0 +1,11 @@
+def func():
+    """
+    A docstring"""
+
+def func():
+    """
+    A docstring
+    """
+
+def func():
+    """A docstring."""

tests/data/format/numpydoc/numpydoc_closing_quotes.py.out

@@ -0,0 +1,9 @@
+def func():
+    """A docstring."""
+
+def func():
+    """A docstring.
+    """
+
+def func():
+    """A docstring."""