Fixed noxfile: shlex split does not handle windows backslash characte…

…rs well. Wrapping in double quotes everywhere. Also using f-strings everywhere now.

noxfile.py

@@ -104,7 +104,7 @@ def tests(session: PowerSession, coverage, pkg_specs):
     # session.run2("conda list", env={"CONDA_PREFIX": str(conda_prefix), "CONDA_DEFAULT_ENV": session.get_session_id()})
 
     # Fail if the assumed python version is not the actual one
-    session.run2("python ci_tools/check_python_version.py %s" % session.python)
+    session.run2(f"python ci_tools/check_python_version.py {session.python}")
 
     # check that it can be imported even from a different folder
     # Important: do not surround the command into double quotes as in the shell !
@@ -127,20 +127,21 @@ def tests(session: PowerSession, coverage, pkg_specs):
                              versions_dct=pkg_specs)
 
         # --coverage + junit html reports
-        session.run2("coverage run --source src/{pkg_name} "
-                     "-m pytest --cache-clear --junitxml={test_xml} --html={test_html} -v tests/"
-                     "".format(pkg_name=pkg_name, test_xml=Folders.test_xml, test_html=Folders.test_html))
+        session.run2(f"coverage run --source src/{pkg_name} "
+                     f"-m pytest --cache-clear "
+                     f'--junitxml="{Folders.test_xml}" --html="{Folders.test_html}" '
+                     f"-v tests/")
         session.run2("coverage report")
-        session.run2("coverage xml -o {covxml}".format(covxml=Folders.coverage_xml))
-        session.run2("coverage html -d {dst}".format(dst=Folders.coverage_reports))
+        session.run2(f'coverage xml -o "{Folders.coverage_xml}"')
+        session.run2(f'coverage html -d "{Folders.coverage_reports}"')
         # delete this intermediate file, it is not needed anymore
         rm_file(Folders.coverage_intermediate_file)
 
         # --generates the badge for the test results and fail build if less than x% tests pass
         nox_logger.info("Generating badge for tests coverage")
         # Use our own package to generate the badge
-        session.run2("genbadge tests -i %s -o %s -t 100" % (Folders.test_xml, Folders.test_badge))
-        session.run2("genbadge coverage -i %s -o %s" % (Folders.coverage_xml, Folders.coverage_badge))
+        session.run2(f'genbadge tests -i "{Folders.test_xml}" -o "{Folders.test_badge}" -t 100')
+        session.run2(f'genbadge coverage -i "{Folders.coverage_xml}" -o "{Folders.coverage_badge}"')
 
 
 @power_session(python=PY39, logsdir=Folders.runlogs)
@@ -160,21 +161,21 @@ def flake8(session: PowerSession):
     session.run("flake8", pkg_name, "--exit-zero", "--format=html", "--htmldir", str(Folders.flake8_reports),
                 "--statistics", "--tee", "--output-file", str(Folders.flake8_intermediate_file))
     # generate our badge
-    session.run2("genbadge flake8 -i %s -o %s" % (Folders.flake8_intermediate_file, Folders.flake8_badge))
+    session.run2(f'genbadge flake8 -i "{Folders.flake8_intermediate_file}" -o "{Folders.flake8_badge}"')
     rm_file(Folders.flake8_intermediate_file)
 
 
 @power_session(python=[PY39])
 def docs(session: PowerSession):
-    """Generates the doc and serves it on a local http server. Pass '-- build' to build statically instead."""
+    """Generates the doc. Pass '-- serve' to serve it on a local http server instead."""
 
     session.install_reqs(phase="docs", phase_reqs=["mkdocs-material", "mkdocs", "pymdown-extensions", "pygments"])
 
     if session.posargs:
-        # use posargs instead of "serve"
+        # use posargs instead of "build"
         session.run2("mkdocs %s" % " ".join(session.posargs))
     else:
-        session.run2("mkdocs serve")
+        session.run2("mkdocs build")
 
 
 @power_session(python=[PY39])
@@ -251,10 +252,9 @@ def my_scheme(version_):
 
     # create the github release
     session.install_reqs(phase="release", phase_reqs=["click", "PyGithub"])
-    session.run2("python ci_tools/github_release.py -s {gh_token} "
-                 "--repo-slug {gh_org}/{gh_repo} -cf ./docs/changelog.md "
-                 "-d https://{gh_org}.github.io/{gh_repo}/changelog {tag}"
-                 "".format(gh_token=gh_token, gh_org=gh_org, gh_repo=gh_repo, tag=current_tag))
+    session.run2(f"python ci_tools/github_release.py -s {gh_token} "
+                 f"--repo-slug {gh_org}/{gh_repo} -cf ./docs/changelog.md "
+                 f"-d https://{gh_org}.github.io/{gh_repo}/changelog {current_tag}")
 
 
 @nox.session(python=False)
@@ -283,15 +283,15 @@ def gha_list(session):
         session_func.parametrize
     except AttributeError:
         if additional_args.with_version:
-            sessions_list = [{"python": py, "session": "%s-%s" % (session_func.__name__, py)} for py in session_func.python]
+            sessions_list = [{"python": py, "session": f"{session_func.__name__}-{py}"} for py in session_func.python]
         else:
-            sessions_list = ["%s-%s" % (session_func.__name__, py) for py in session_func.python]
+            sessions_list = [f"{session_func.__name__}-{py}" for py in session_func.python]
     else:
         if additional_args.with_version:
-            sessions_list = [{"python": py, "session": "%s-%s(%s)" % (session_func.__name__, py, param)}
+            sessions_list = [{"python": py, "session": f"{session_func.__name__}-{py}({param})"}
                              for py, param in product(session_func.python, session_func.parametrize)]
         else:
-            sessions_list = ["%s-%s(%s)" % (session_func.__name__, py, param)
+            sessions_list = [f"{session_func.__name__}-{py}({param})"
                              for py, param in product(session_func.python, session_func.parametrize)]
 
     # print the list so that it can be caught by GHA.