@@ -363,10 +363,10 @@ def get_ref(self, pattern: str) -> str:
363363"""Return the reference of a given tag or branch."""
364364try :
365365# Maybe it's a branch
366- return self .run ("show-ref" ,"-s" ,"origin/" + pattern ).stdout .strip ()
366+ return self .run ("show-ref" ,"-s" ,f "origin/{ pattern } " stdout .strip ()
367367except subprocess .CalledProcessError :
368368# Maybe it's a tag
369- return self .run ("show-ref" ,"-s" ,"tags/" + pattern ).stdout .strip ()
369+ return self .run ("show-ref" ,"-s" ,f "tags/{ pattern } " stdout .strip ()
370370
371371def fetch (self )-> subprocess .CompletedProcess :
372372"""Try (and retry) to run git fetch."""
@@ -656,11 +656,11 @@ def build(self) -> None:
656656"make" ,
657657"-C" ,
658658self .checkout / "Doc" ,
659- "PYTHON=" + str ( python ) ,
660- "SPHINXBUILD=" + str ( sphinxbuild ) ,
661- "BLURB=" + str ( blurb ) ,
662- "VENVDIR=" + str ( self .venv ) ,
663- "SPHINXOPTS=" + " " .join (sphinxopts ),
659+ f "PYTHON={ python } "
660+ f "SPHINXBUILD={ sphinxbuild } "
661+ f "BLURB={ blurb } "
662+ f "VENVDIR={ self .venv } "
663+ f "SPHINXOPTS={ ' ' .join (sphinxopts )} "
664664"SPHINXERRORHANDLING=" ,
665665maketarget ,
666666 ])
@@ -683,7 +683,7 @@ def build_venv(self) -> None:
683683# opengraph previews
684684requirements .append ("matplotlib>=3" )
685685
686- venv_path = self .build_root / ( "venv-" + self .version .name )
686+ venv_path = self .build_root / f "venv-{ self .version .name } "
687687venv .create (venv_path ,symlinks = os .name != "nt" ,with_pip = True )
688688run (
689689 [venv_path / "bin" / "python" ,"-m" ,"pip" ,"install" ,"--upgrade" ]