diff --git a/.github/workflows/python-code-quality.yml b/.github/workflows/python-code-quality.yml
index 31819c081aa..8c49211705f 100644
--- a/.github/workflows/python-code-quality.yml
+++ b/.github/workflows/python-code-quality.yml
@@ -38,7 +38,7 @@ jobs:
       # renovate: datasource=pypi depName=bandit
       BANDIT_VERSION: "1.8.2"
       # renovate: datasource=pypi depName=ruff
-      RUFF_VERSION: "0.9.2"
+      RUFF_VERSION: "0.9.3"
 
     runs-on: ${{ matrix.os }}
     permissions:
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 49674d971cb..9834ad4f121 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -37,7 +37,7 @@ repos:
           )
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
-    rev: v0.9.2
+    rev: v0.9.3
     hooks:
       # Run the linter.
       - id: ruff
diff --git a/gui/wxpython/animation/controller.py b/gui/wxpython/animation/controller.py
index 808e9b20ef4..6cf3269eeb1 100644
--- a/gui/wxpython/animation/controller.py
+++ b/gui/wxpython/animation/controller.py
@@ -36,7 +36,6 @@
     HashCmds,
 )
 from animation.data import AnimationData
-from itertools import starmap
 
 
 class AnimationController(wx.EvtHandler):
@@ -369,7 +368,7 @@ def _updateAnimations(self, activeIndices, mapNamesDict=None):
                 if anim.viewMode == "3d":
                     regions = [None] * len(regions)
                 self.animations[i].SetFrames(
-                    list(starmap(HashCmds, zip(anim.cmdMatrix, regions)))
+                    list(map(HashCmds, anim.cmdMatrix, regions))
                 )
                 self.animations[i].SetActive(True)
         else:
diff --git a/gui/wxpython/core/utils.py b/gui/wxpython/core/utils.py
index 9ae88cb05a4..a1722fec64b 100644
--- a/gui/wxpython/core/utils.py
+++ b/gui/wxpython/core/utils.py
@@ -871,12 +871,10 @@ def StoreEnvVariable(key, value=None, envFile=None):
         return
     expCmd = "set" if windows else "export"
 
-    for key, value in environ.items():
-        fd.write("%s %s=%s\n" % (expCmd, key, value))
+    fd.writelines("%s %s=%s\n" % (expCmd, key, value) for key, value in environ.items())
 
     # write also skipped lines
-    for line in lineSkipped:
-        fd.write(line + os.linesep)
+    fd.writelines(line + os.linesep for line in lineSkipped)
 
     fd.close()
 
diff --git a/gui/wxpython/gcp/manager.py b/gui/wxpython/gcp/manager.py
index 43bbfdc1b8e..ddeb19c7302 100644
--- a/gui/wxpython/gcp/manager.py
+++ b/gui/wxpython/gcp/manager.py
@@ -347,8 +347,9 @@ def SetSrcEnv(self, location, mapset):
 
         try:
             f = open(self.source_gisrc, mode="w")
-            for line in self.gisrc_dict.items():
-                f.write(line[0] + ": " + line[1] + "\n")
+            f.writelines(
+                line[0] + ": " + line[1] + "\n" for line in self.gisrc_dict.items()
+            )
         finally:
             f.close()
 
@@ -2769,8 +2770,7 @@ def MakeVGroup(self):
 
         f = open(self.vgrpfile, mode="w")
         try:
-            for vect in vgrouplist:
-                f.write(vect + "\n")
+            f.writelines(vect + "\n" for vect in vgrouplist)
         finally:
             f.close()
 
diff --git a/gui/wxpython/gmodeler/panels.py b/gui/wxpython/gmodeler/panels.py
index fbdc2048620..e567706cd19 100644
--- a/gui/wxpython/gmodeler/panels.py
+++ b/gui/wxpython/gmodeler/panels.py
@@ -683,8 +683,7 @@ def WriteModelFile(self, filename):
         try:
             mfile = open(filename, "w")
             tmpfile.seek(0)
-            for line in tmpfile.readlines():
-                mfile.write(line)
+            mfile.writelines(tmpfile.readlines())
         except OSError:
             wx.MessageBox(
                 parent=self,
diff --git a/gui/wxpython/image2target/ii2t_manager.py b/gui/wxpython/image2target/ii2t_manager.py
index 56adf91775b..a658897a5fb 100644
--- a/gui/wxpython/image2target/ii2t_manager.py
+++ b/gui/wxpython/image2target/ii2t_manager.py
@@ -364,8 +364,9 @@ def SetSrcEnv(self, location, mapset):
 
         try:
             f = open(self.source_gisrc, mode="w")
-            for line in self.gisrc_dict.items():
-                f.write(line[0] + ": " + line[1] + "\n")
+            f.writelines(
+                line[0] + ": " + line[1] + "\n" for line in self.gisrc_dict.items()
+            )
         finally:
             f.close()
 
@@ -2709,8 +2710,7 @@ def MakeVGroup(self):
 
         f = open(self.vgrpfile, mode="w")
         try:
-            for vect in vgrouplist:
-                f.write(vect + "\n")
+            f.writelines(vect + "\n" for vect in vgrouplist)
         finally:
             f.close()
 
diff --git a/gui/wxpython/lmgr/workspace.py b/gui/wxpython/lmgr/workspace.py
index dd83c1a6f22..6bad27d7674 100644
--- a/gui/wxpython/lmgr/workspace.py
+++ b/gui/wxpython/lmgr/workspace.py
@@ -448,8 +448,7 @@ def SaveToFile(self, filename):
         try:
             mfile = open(filename, "wb")
             tmpfile.seek(0)
-            for line in tmpfile.readlines():
-                mfile.write(line)
+            mfile.writelines(tmpfile.readlines())
         except OSError:
             GError(
                 parent=self.lmgr,
diff --git a/gui/wxpython/mapwin/buffered.py b/gui/wxpython/mapwin/buffered.py
index 7e42ebc57c9..fe2a5b0ae69 100644
--- a/gui/wxpython/mapwin/buffered.py
+++ b/gui/wxpython/mapwin/buffered.py
@@ -1542,8 +1542,6 @@ def OnLeftDown(self, event):
             if idlist != []:
                 self.dragid = idlist[0]  # drag whatever is on top
 
-        else:
-            pass
         coords = self.Pixel2Cell(self.mouse["begin"])
         self.mouseLeftDown.emit(x=coords[0], y=coords[1])
 
@@ -1592,8 +1590,6 @@ def OnLeftUp(self, event):
                     self.textdict[self.dragid]["bbox"] = self.pdc.GetIdBounds(
                         self.dragid
                     )
-                else:
-                    pass
                 self.dragid = None
 
             self.mouseLeftUpPointer.emit(x=coordinates[0], y=coordinates[1])
diff --git a/gui/wxpython/photo2image/ip2i_manager.py b/gui/wxpython/photo2image/ip2i_manager.py
index dc5713e961a..9f78d717fee 100644
--- a/gui/wxpython/photo2image/ip2i_manager.py
+++ b/gui/wxpython/photo2image/ip2i_manager.py
@@ -255,8 +255,9 @@ def SetSrcEnv(self, location, mapset):
 
         try:
             f = open(self.source_gisrc, mode="w")
-            for line in self.gisrc_dict.items():
-                f.write(line[0] + ": " + line[1] + "\n")
+            f.writelines(
+                line[0] + ": " + line[1] + "\n" for line in self.gisrc_dict.items()
+            )
         finally:
             f.close()
 
diff --git a/gui/wxpython/wxplot/dialogs.py b/gui/wxpython/wxplot/dialogs.py
index cdb74c64a9e..d1564d4fc8a 100755
--- a/gui/wxpython/wxplot/dialogs.py
+++ b/gui/wxpython/wxplot/dialogs.py
@@ -547,8 +547,6 @@ def OnHistMap(self, event):
             self.gselection.Enable()
             self.rselection.Disable()
             self.rselection.SetValue("")
-        else:
-            pass
 
     def OnRasterSelection(self, event):
         """Handler for selecting a single raster map"""
diff --git a/gui/wxpython/wxplot/profile.py b/gui/wxpython/wxplot/profile.py
index e0994f1a8a5..5b63f3cabab 100644
--- a/gui/wxpython/wxplot/profile.py
+++ b/gui/wxpython/wxplot/profile.py
@@ -446,8 +446,10 @@ def SaveProfileToFile(self, event):
                     dlg.Destroy()
                     return
 
-                for datapair in self.raster[r]["datalist"]:
-                    fd.write("%.6f,%.6f\n" % (float(datapair[0]), float(datapair[1])))
+                fd.writelines(
+                    "%.6f,%.6f\n" % (float(datapair[0]), float(datapair[1]))
+                    for datapair in self.raster[r]["datalist"]
+                )
 
                 fd.close()
 
diff --git a/lib/gis/testsuite/test_gis_lib_getl.py b/lib/gis/testsuite/test_gis_lib_getl.py
index 1ac9907f3d9..dec5c0b40a2 100644
--- a/lib/gis/testsuite/test_gis_lib_getl.py
+++ b/lib/gis/testsuite/test_gis_lib_getl.py
@@ -29,10 +29,9 @@ def read_lines_and_assert(self, get_line_function, newline):
         """Write and read lines and then assert they are as expected"""
         lines = ["Line 1", "Line 2", "Line 3"]
         with open(self.file_path, mode="w", newline=newline) as stream:
-            for line in lines:
-                # Python text newline here.
-                # The specific newline is added by the stream.
-                stream.write(f"{line}\n")
+            # Python text newline here.
+            # The specific newline is added by the stream.
+            stream.writelines(f"{line}\n" for line in lines)
 
         file_ptr = self.libc.fopen(str(self.file_path).encode("utf-8"), b"r")
         if not file_ptr:
diff --git a/lib/init/grass.py b/lib/init/grass.py
index c2ac803e6a2..befec465b3a 100755
--- a/lib/init/grass.py
+++ b/lib/init/grass.py
@@ -525,8 +525,7 @@ def write_gisrcrc(gisrcrc, gisrc, skip_variable=None):
                 del lines[number]
             number += 1
     with open(gisrcrc, "w") as f:
-        for line in lines:
-            f.write(line)
+        f.writelines(lines)
 
 
 def read_env_file(path):
@@ -543,8 +542,7 @@ def write_gisrc(kv, filename, append=False):
     # use append=True to avoid a race condition between write_gisrc() and
     # grass_prompt() on startup (PR #548)
     f = open(filename, "a" if append else "w")
-    for k, v in kv.items():
-        f.write("%s: %s\n" % (k, v))
+    f.writelines("%s: %s\n" % (k, v) for k, v in kv.items())
     f.close()
 
 
diff --git a/python/grass/gunittest/multireport.py b/python/grass/gunittest/multireport.py
index 5a0350f1786..9deb0528ada 100644
--- a/python/grass/gunittest/multireport.py
+++ b/python/grass/gunittest/multireport.py
@@ -413,13 +413,13 @@ def main_page(
                 )
             )
         page.write("</tbody></table>")
-        for image, caption in itertools.izip(images, captions):
-            page.write(
-                "<h3>{caption}<h3>"
-                '<img src="{image}" alt="{caption}" title="{caption}">'.format(
-                    image=image, caption=caption
-                )
+        page.writelines(
+            "<h3>{caption}<h3>"
+            '<img src="{image}" alt="{caption}" title="{caption}">'.format(
+                image=image, caption=caption
             )
+            for image, caption in itertools.izip(images, captions)
+        )
         page.write("</body></html>")
 
 
diff --git a/python/grass/gunittest/reporters.py b/python/grass/gunittest/reporters.py
index 6302c8e2248..d6ff1669bbc 100644
--- a/python/grass/gunittest/reporters.py
+++ b/python/grass/gunittest/reporters.py
@@ -52,8 +52,9 @@ def replace_in_file(file_path, pattern, repl):
     # using tmp file to store the replaced content
     tmp_file_path = file_path + ".tmp"
     with open(file_path) as old_file, open(tmp_file_path, "w") as new_file:
-        for line in old_file:
-            new_file.write(re.sub(pattern=pattern, string=line, repl=repl))
+        new_file.writelines(
+            re.sub(pattern=pattern, string=line, repl=repl) for line in old_file
+        )
     # remove old file since it must not exist for rename/move
     os.remove(file_path)
     # replace old file by new file
@@ -448,8 +449,7 @@ def wrap_stdstream_to_html(infile, outfile, module, stream):
     after = "</pre></body></html>"
     with open(outfile, "w") as html, open(infile) as text:
         html.write(before)
-        for line in text:
-            html.write(color_error_line(html_escape(line)))
+        html.writelines(color_error_line(html_escape(line)) for line in text)
         html.write(after)
 
 
@@ -795,8 +795,10 @@ def end_file_test(
             file_index.write(files_section)
 
             if supplementary_files:
-                for f in supplementary_files:
-                    file_index.write('<li><a href="{f}">{f}</a></li>'.format(f=f))
+                file_index.writelines(
+                    '<li><a href="{f}">{f}</a></li>'.format(f=f)
+                    for f in supplementary_files
+                )
 
             file_index.write("</ul>")
 
diff --git a/python/grass/gunittest/testsuite/test_checkers.py b/python/grass/gunittest/testsuite/test_checkers.py
index b11b25778a3..f79598aa165 100644
--- a/python/grass/gunittest/testsuite/test_checkers.py
+++ b/python/grass/gunittest/testsuite/test_checkers.py
@@ -369,17 +369,14 @@ class TestMd5Sums(TestCase):
     @classmethod
     def setUpClass(cls):
         with open(cls.correct_file_name_platform_nl, "w") as f:
-            for line in CORRECT_LINES:
-                # \n should be converted to platform newline
-                f.write(line + "\n")
+            # \n should be converted to platform newline
+            f.writelines(line + "\n" for line in CORRECT_LINES)
         with open(cls.correct_file_name_unix_nl, "w") as f:
-            for line in CORRECT_LINES:
-                # binary mode will write pure \n
-                f.write(line + "\n")
+            # binary mode will write pure \n
+            f.writelines(line + "\n" for line in CORRECT_LINES)
         with open(cls.wrong_file_name, "w") as f:
-            for line in INCORRECT_LINES:
-                # \n should be converted to platform newline
-                f.write(line + "\n")
+            # \n should be converted to platform newline
+            f.writelines(line + "\n" for line in INCORRECT_LINES)
 
     @classmethod
     def tearDownClass(cls):
diff --git a/python/grass/jupyter/timeseriesmap.py b/python/grass/jupyter/timeseriesmap.py
index 0379e19a4c0..5d32cc83e93 100644
--- a/python/grass/jupyter/timeseriesmap.py
+++ b/python/grass/jupyter/timeseriesmap.py
@@ -28,8 +28,6 @@ def fill_none_values(names):
     for i, name in enumerate(names):
         if name == "None":
             names[i] = names[i - 1]
-        else:
-            pass
     return names
 
 
diff --git a/raster/r.topidx/gridatb_to_arc.py b/raster/r.topidx/gridatb_to_arc.py
index d80f6797a65..351cb07afad 100755
--- a/raster/r.topidx/gridatb_to_arc.py
+++ b/raster/r.topidx/gridatb_to_arc.py
@@ -54,8 +54,7 @@
 NODATA_value  9999
 """
 )
-for inline in inf:
-    outf.write(inline)
+outf.writelines(inf)
 
 inf.close()
 outf.close()
diff --git a/scripts/d.polar/d.polar.py b/scripts/d.polar/d.polar.py
index d7e67486a0e..2d5f6d50a7b 100755
--- a/scripts/d.polar/d.polar.py
+++ b/scripts/d.polar/d.polar.py
@@ -283,10 +283,10 @@ def plot_eps(psout):
 
     (x, y) = outercircle[1]
     outf.write("%.2f %.2f moveto\n" % (x * scale + halfframe, y * scale + halfframe))
-    for x, y in outercircle[2:]:
-        outf.write(
-            "%.2f %.2f lineto\n" % (x * scale + halfframe, y * scale + halfframe)
-        )
+    outf.writelines(
+        "%.2f %.2f lineto\n" % (x * scale + halfframe, y * scale + halfframe)
+        for x, y in outercircle[2:]
+    )
 
     t = string.Template(
         """
@@ -338,10 +338,10 @@ def plot_eps(psout):
 
     (x, y) = sine_cosine_replic[1]
     outf.write("%.2f %.2f moveto\n" % (x * scale + halfframe, y * scale + halfframe))
-    for x, y in sine_cosine_replic[2:]:
-        outf.write(
-            "%.2f %.2f lineto\n" % (x * scale + halfframe, y * scale + halfframe)
-        )
+    outf.writelines(
+        "%.2f %.2f lineto\n" % (x * scale + halfframe, y * scale + halfframe)
+        for x, y in sine_cosine_replic[2:]
+    )
 
     t = string.Template(
         """
@@ -363,10 +363,10 @@ def plot_eps(psout):
 
     (x, y) = vector[1]
     outf.write("%.2f %.2f moveto\n" % (x * scale + halfframe, y * scale + halfframe))
-    for x, y in vector[2:]:
-        outf.write(
-            "%.2f %.2f lineto\n" % (x * scale + halfframe, y * scale + halfframe)
-        )
+    outf.writelines(
+        "%.2f %.2f lineto\n" % (x * scale + halfframe, y * scale + halfframe)
+        for x, y in vector[2:]
+    )
 
     t = string.Template(
         """
diff --git a/scripts/db.univar/db.univar.py b/scripts/db.univar/db.univar.py
index 859e0fd831c..3969d4f7caf 100755
--- a/scripts/db.univar/db.univar.py
+++ b/scripts/db.univar/db.univar.py
@@ -89,8 +89,7 @@ def sortfile(infile, outfile):
         for i in range(len(lines)):
             lines[i] = float(lines[i].rstrip("\r\n"))
         lines.sort()
-        for line in lines:
-            outf.write(str(line) + "\n")
+        outf.writelines(str(line) + "\n" for line in lines)
 
     inf.close()
     outf.close()
diff --git a/scripts/g.extension/g.extension.py b/scripts/g.extension/g.extension.py
index 01f5b0a969f..aa707912f38 100644
--- a/scripts/g.extension/g.extension.py
+++ b/scripts/g.extension/g.extension.py
@@ -1041,11 +1041,11 @@ def write_xml_modules(name, tree=None):
             if bnode is not None:
                 file_.write("%s<binary>\n" % (" " * indent))
                 indent += 4
-                for fnode in bnode.findall("file"):
-                    file_.write(
-                        "%s<file>%s</file>\n"
-                        % (" " * indent, os.path.join(options["prefix"], fnode.text))
-                    )
+                file_.writelines(
+                    "%s<file>%s</file>\n"
+                    % (" " * indent, os.path.join(options["prefix"], fnode.text))
+                    for fnode in bnode.findall("file")
+                )
                 indent -= 4
                 file_.write("%s</binary>\n" % (" " * indent))
             file_.write('%s<libgis revision="%s" />\n' % (" " * indent, libgis_revison))
@@ -1091,11 +1091,11 @@ def write_xml_extensions(name, tree=None):
             if bnode is not None:
                 file_.write("%s<binary>\n" % (" " * indent))
                 indent += 4
-                for fnode in bnode.findall("file"):
-                    file_.write(
-                        "%s<file>%s</file>\n"
-                        % (" " * indent, os.path.join(options["prefix"], fnode.text))
-                    )
+                file_.writelines(
+                    "%s<file>%s</file>\n"
+                    % (" " * indent, os.path.join(options["prefix"], fnode.text))
+                    for fnode in bnode.findall("file")
+                )
                 indent -= 4
                 file_.write("%s</binary>\n" % (" " * indent))
             # extension modules
@@ -1103,8 +1103,10 @@ def write_xml_extensions(name, tree=None):
             if mnode is not None:
                 file_.write("%s<modules>\n" % (" " * indent))
                 indent += 4
-                for fnode in mnode.findall("module"):
-                    file_.write("%s<module>%s</module>\n" % (" " * indent, fnode.text))
+                file_.writelines(
+                    "%s<module>%s</module>\n" % (" " * indent, fnode.text)
+                    for fnode in mnode.findall("module")
+                )
                 indent -= 4
                 file_.write("%s</modules>\n" % (" " * indent))
 
@@ -1136,14 +1138,14 @@ def write_xml_toolboxes(name, tree=None):
                 % (" " * indent, tnode.get("name"), tnode.get("code"))
             )
             indent += 4
-            for cnode in tnode.findall("correlate"):
-                file_.write(
-                    '%s<correlate code="%s" />\n' % (" " * indent, tnode.get("code"))
-                )
-            for mnode in tnode.findall("task"):
-                file_.write(
-                    '%s<task name="%s" />\n' % (" " * indent, mnode.get("name"))
-                )
+            file_.writelines(
+                '%s<correlate code="%s" />\n' % (" " * indent, tnode.get("code"))
+                for cnode in tnode.findall("correlate")
+            )
+            file_.writelines(
+                '%s<task name="%s" />\n' % (" " * indent, mnode.get("name"))
+                for mnode in tnode.findall("task")
+            )
             indent -= 4
             file_.write("%s</toolbox>\n" % (" " * indent))
 
diff --git a/scripts/i.oif/i.oif.py b/scripts/i.oif/i.oif.py
index cb156675927..81ef0b25f7b 100755
--- a/scripts/i.oif/i.oif.py
+++ b/scripts/i.oif/i.oif.py
@@ -146,8 +146,7 @@ def main():
             sys.stdout.write(fmt % (p + (v,)))
     else:
         outf = open(output, "w")
-        for v, p in oif:
-            outf.write(fmt % (p + (v,)))
+        outf.writelines(fmt % (p + (v,)) for v, p in oif)
         outf.close()
 
 
diff --git a/scripts/i.spectral/i.spectral.py b/scripts/i.spectral/i.spectral.py
index 07efd8af31f..62f4a3397a3 100755
--- a/scripts/i.spectral/i.spectral.py
+++ b/scripts/i.spectral/i.spectral.py
@@ -104,8 +104,7 @@ def draw_gnuplot(what, xlabels, output, img_format, coord_legend):
         outfile = os.path.join(tmp_dir, "data_%d" % i)
         outf = open(outfile, "w")
         xrange = max(xrange, len(row) - 2)
-        for j, val in enumerate(row[3:]):
-            outf.write("%d %s\n" % (j + 1, val))
+        outf.writelines("%d %s\n" % (j + 1, val) for j, val in enumerate(row[3:]))
         outf.close()
 
     # build gnuplot script
@@ -147,8 +146,7 @@ def draw_gnuplot(what, xlabels, output, img_format, coord_legend):
 
     plotfile = os.path.join(tmp_dir, "spectrum.gnuplot")
     plotf = open(plotfile, "w")
-    for line in lines:
-        plotf.write(line + "\n")
+    plotf.writelines(line + "\n" for line in lines)
     plotf.close()
 
     if output:
@@ -163,15 +161,13 @@ def draw_linegraph(what):
     xfile = os.path.join(tmp_dir, "data_x")
 
     xf = open(xfile, "w")
-    for j, val in enumerate(what[0][3:]):
-        xf.write("%d\n" % (j + 1))
+    xf.writelines("%d\n" % (j + 1) for j, val in enumerate(what[0][3:]))
     xf.close()
 
     for i, row in enumerate(what):
         yfile = os.path.join(tmp_dir, "data_y_%d" % i)
         yf = open(yfile, "w")
-        for j, val in enumerate(row[3:]):
-            yf.write("%s\n" % val)
+        yf.writelines("%s\n" % val for j, val in enumerate(row[3:]))
         yf.close()
         yfiles.append(yfile)
 
diff --git a/scripts/v.in.mapgen/v.in.mapgen.py b/scripts/v.in.mapgen/v.in.mapgen.py
index efe7af1075d..e76486b75b4 100755
--- a/scripts/v.in.mapgen/v.in.mapgen.py
+++ b/scripts/v.in.mapgen/v.in.mapgen.py
@@ -106,8 +106,10 @@ def main():
             if f[0].lower() == "nan":
                 if points != []:
                     outf.write("L %d 1\n" % len(points))
-                    for point in points:
-                        outf.write(" %.15g %.15g %.15g\n" % tuple(map(float, point)))
+                    outf.writelines(
+                        " %.15g %.15g %.15g\n" % tuple(map(float, point))
+                        for point in points
+                    )
                     outf.write(" 1 %d\n" % cat)
                     cat += 1
                 points = []
@@ -134,8 +136,9 @@ def main():
             if line[0] == "#":
                 if points != []:
                     outf.write("L %d 1\n" % len(points))
-                    for point in points:
-                        outf.write(" %.15g %.15g\n" % tuple(map(float, point)))
+                    outf.writelines(
+                        " %.15g %.15g\n" % tuple(map(float, point)) for point in points
+                    )
                     outf.write(" 1 %d\n" % cat)
                     cat += 1
                 points = []
@@ -144,8 +147,9 @@ def main():
 
         if points != []:
             outf.write("L %d 1\n" % len(points))
-            for point in points:
-                outf.write(" %.15g %.15g\n" % tuple(map(float, point)))
+            outf.writelines(
+                " %.15g %.15g\n" % tuple(map(float, point)) for point in points
+            )
             outf.write(" 1 %d\n" % cat)
             cat += 1
     outf.close()
diff --git a/utils/create_python_init_file.py b/utils/create_python_init_file.py
index 567c8b95bba..5642bbc2e75 100755
--- a/utils/create_python_init_file.py
+++ b/utils/create_python_init_file.py
@@ -34,8 +34,7 @@ def main(path):
 
     with open(os.path.join(path, "__init__.py"), "w") as fd:
         fd.write("all = [%s" % os.linesep)
-        for m in modules:
-            fd.write("    '%s',%s" % (m, os.linesep))
+        fd.writelines("    '%s',%s" % (m, os.linesep) for m in modules)
         fd.write("    ]%s" % os.linesep)
     return 0