Use yapf for formatting python scripts

tools/docker2initramfs.py

@@ -9,34 +9,42 @@
 def main():
     parser = argparse.ArgumentParser(
         description="Converts a Docker image into cpio (initramfs format).")
-    parser.add_argument("outfile",
-                        help="The output path.")
+    parser.add_argument("outfile", help="The output path.")
     parser.add_argument("image",
                         help="The docker image name (e.g. python:slim).")
     args = parser.parse_args()
 
     container_id = f"docker-initramfs-tmp"
     try:
         subprocess.run(["docker", "rm", container_id],
-                       stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, check=False)
+                       stdout=subprocess.DEVNULL,
+                       stderr=subprocess.DEVNULL,
+                       check=False)
         subprocess.run(
             ["docker", "create", "--name", container_id, "-t", args.image],
-            stdout=subprocess.PIPE, stderr=subprocess.STDOUT, check=True)
+            stdout=subprocess.PIPE,
+            stderr=subprocess.STDOUT,
+            check=True)
         with tempfile.NamedTemporaryFile() as temp_file:
             temp_file = Path(temp_file.name)
-            subprocess.run(["docker", "export", f"--output={temp_file}", container_id],
-                           stderr=subprocess.STDOUT, check=True)
+            subprocess.run(
+                ["docker", "export", f"--output={temp_file}", container_id],
+                stderr=subprocess.STDOUT,
+                check=True)
             with tempfile.TemporaryDirectory() as temp_dir:
                 temp_dir = Path(temp_dir)
                 subprocess.run(["tar", "xf", temp_file],
-                               cwd=temp_dir, check=True)
+                               cwd=temp_dir,
+                               check=True)
 
                 # XXX: This is a hack to get around the fact that the Docker overrides
                 #      the /etc/resolv.conf file.
-                (temp_dir / "etc" / "resolv.conf").write_text("nameserver 1.1.1.1")
+                (temp_dir / "etc" /
+                 "resolv.conf").write_text("nameserver 1.1.1.1")
 
                 filelist = list(
-                    map(lambda p: "./" + str(p.relative_to(temp_dir)), temp_dir.glob("**/*")))
+                    map(lambda p: "./" + str(p.relative_to(temp_dir)),
+                        temp_dir.glob("**/*")))
                 subprocess.run(
                     ["cpio", "--create", "--format=newc"],
                     input="\n".join(filelist).encode("ascii"),
@@ -46,10 +54,13 @@ def main():
                 )
     except subprocess.CalledProcessError as e:
         sys.exit(
-            f"{e.stdout.decode('utf-8', 'backslashreplace')}\n\nError: failed to export {args.image}")
+            f"{e.stdout.decode('utf-8', 'backslashreplace')}\n\nError: failed to export {args.image}"
+        )
     finally:
         subprocess.run(["docker", "rm", container_id],
-                       stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, check=False)
+                       stdout=subprocess.DEVNULL,
+                       stderr=subprocess.DEVNULL,
+                       check=False)
 
 
 if __name__ == "__main__":

tools/embed-symbol-table.py

@@ -23,8 +23,9 @@ def main():
         sys.exit("embed-symbol-table.py: failed to locate the symbol table")
     if image.find(START_MAKER, offset + 1) >= 0:
         print(hex(offset), hex(image.find(START_MAKER, offset + 1)))
-        sys.exit("embed-symbol-table.py: found multiple empty symbol tables (perhaps because " +
-                 "START_MAKER is not sufficiently long to be unique?)")
+        sys.exit(
+            "embed-symbol-table.py: found multiple empty symbol tables (perhaps because "
+            + "START_MAKER is not sufficiently long to be unique?)")
 
     # Parse the nm output and extract symbol names and theier addresses.
     symbols = {}
@@ -55,7 +56,8 @@ def main():
     max_size = offset_end - offset
     if len(symbol_table) > max_size:
         sys.exit(
-            f"embed-symbol-table.py: Too many symbols; please expand the symbol table area (max_size={max_size / 1024}KiB, created={len(symbol_table) / 1024}KiB)")
+            f"embed-symbol-table.py: Too many symbols; please expand the symbol table area (max_size={max_size / 1024}KiB, created={len(symbol_table) / 1024}KiB)"
+        )
 
     # Embed the symbol table.
     image = image[:offset] + symbol_table + image[offset + len(symbol_table):]

tools/inspect-init-in-docker-image.py

@@ -8,17 +8,22 @@
 
 def main():
     parser = argparse.ArgumentParser(
-        description="Determines the init argv specified in a Docker image (i.e. CMD).")
-    parser.add_argument("image",
-                        help="The docker image name (e.g. python:slim or docker.io/library/python:alpine).")
+        description=
+        "Determines the init argv specified in a Docker image (i.e. CMD).")
+    parser.add_argument(
+        "image",
+        help=
+        "The docker image name (e.g. python:slim or docker.io/library/python:alpine)."
+    )
     args = parser.parse_args()
 
     try:
         stdout = subprocess.check_output(
             ["docker", "image", "inspect", args.image])
     except subprocess.CalledProcessError as e:
         sys.exit(
-            f"{e.stdout.decode('utf-8', 'backslashreplace')}\n\nError: failed to inspect {args.image}")
+            f"{e.stdout.decode('utf-8', 'backslashreplace')}\n\nError: failed to inspect {args.image}"
+        )
 
     data = json.loads(stdout)[0]["Config"]
     print(shlex.join(data["Cmd"]))

tools/run-qemu.py

@@ -8,22 +8,31 @@
 import sys
 
 COMMON_ARGS = [
-    "-serial", "mon:stdio", "-no-reboot",
+    "-serial",
+    "mon:stdio",
+    "-no-reboot",
 ]
 
 ARCHS = {
-    "x64":  {
-        "bin": "qemu-system-x86_64",
-        "args": COMMON_ARGS + [
-            "-m", "512",
-            "-cpu", "Icelake-Server",
-
-            "-device", "virtio-net,netdev=net0,disable-legacy=on,disable-modern=off",
-            "-netdev", "user,id=net0,hostfwd=tcp:127.0.0.1:20022-:22,hostfwd=tcp:127.0.0.1:20080-:80",
-            "-object", "filter-dump,id=fiter0,netdev=net0,file=virtio-net.pcap",
-
-            "-device", "isa-debug-exit,iobase=0x501,iosize=2",
-            "-d", "guest_errors,unimp",
+    "x64": {
+        "bin":
+        "qemu-system-x86_64",
+        "args":
+        COMMON_ARGS + [
+            "-m",
+            "1024",
+            "-cpu",
+            "Icelake-Server",
+            "-device",
+            "virtio-net,netdev=net0,disable-legacy=on,disable-modern=off",
+            "-netdev",
+            "user,id=net0,hostfwd=tcp:127.0.0.1:20022-:22,hostfwd=tcp:127.0.0.1:20080-:80",
+            "-object",
+            "filter-dump,id=fiter0,netdev=net0,file=virtio-net.pcap",
+            "-device",
+            "isa-debug-exit,iobase=0x501,iosize=2",
+            "-d",
+            "guest_errors,unimp",
         ]
     }
 }
@@ -85,7 +94,8 @@ def main():
     p = subprocess.run(argv, preexec_fn=os.setsid)
     if p.returncode != 33:
         sys.exit(
-            f"\nrun-qemu.py: qemu exited with failure status (status={p.returncode})")
+            f"\nrun-qemu.py: qemu exited with failure status (status={p.returncode})"
+        )
 
 
 if __name__ == "__main__":