create-sys-script: apply "ruff format" and "ruff check --fix"

test/create-sys-script.py

@@ -1,28 +1,29 @@
 #!/usr/bin/env python3
 # SPDX-License-Identifier: LGPL-2.1-or-later
 
-OUTFILE_HEADER = """#!/usr/bin/env python3
+import filecmp
+import os
+import stat
+import subprocess
+import sys
+import tempfile
+
+OUTFILE_HEADER = '''#!/usr/bin/env python3
 # SPDX-License-Identifier: LGPL-2.1-or-later
 #
 # create-sys-script.py
 #
 # © 2017 Canonical Ltd.
 # Author: Dan Streetman <dan.streetman@canonical.com>
-"""
+'''
 
 # Use this only to (re-)create the test/sys-script.py script,
 # after adding or modifying anything in the test/sys/ directory
 
 
-import os, sys
-import stat
-import tempfile
-import filecmp
-import subprocess
-
 OUTFILE_MODE = 0o775
 
-OUTFILE_FUNCS = r"""
+OUTFILE_FUNCS = r'''
 import os, sys
 import shutil
 
@@ -36,9 +37,9 @@ def f(path, mode, contents):
     with open(path, "wb") as f:
         f.write(contents)
     os.chmod(path, mode)
-"""
+'''
 
-OUTFILE_MAIN = """
+OUTFILE_MAIN = '''
 if len(sys.argv) < 2:
     exit("Usage: {} <target dir>".format(sys.argv[0]))
 
@@ -49,7 +50,7 @@ os.chdir(sys.argv[1])
 
 if os.path.exists('sys'):
     shutil.rmtree('sys')
-"""
+'''
 
 
 def handle_dir(outfile, path):
@@ -67,17 +68,17 @@ def escape_single_quotes(b):
     r = repr(b)[2:-1]
     # python escapes all ' only if there are ' and " in the string
     if '"' not in r:
-        r = r.replace("'", r"\'")
+        r = r.replace("'", r'\'')
     # return line with all ' escaped
     return r
 
 
 def handle_file(outfile, path):
     m = os.lstat(path).st_mode & 0o777
-    with open(path, "rb") as f:
+    with open(path, 'rb') as f:
         b = f.read()
-    if b.count(b"\n") > 1:
-        r = "\n".join( escape_single_quotes(l) for l in b.split(b"\n") )
+    if b.count(b'\n') > 1:
+        r = '\n'.join(escape_single_quotes(line) for line in b.split(b'\n'))
         r = f"b'''{r}'''"
     else:
         r = repr(b)
@@ -85,7 +86,7 @@ def handle_file(outfile, path):
 
 
 def process_sysdir(outfile):
-    for (dirpath, dirnames, filenames) in os.walk('sys'):
+    for dirpath, dirnames, filenames in os.walk('sys'):
         handle_dir(outfile, dirpath)
         for d in dirnames:
             path = os.path.join(dirpath, d)
@@ -105,17 +106,17 @@ def verify_dir(tmpd, path_a):
     mode_a = os.lstat(path_a).st_mode
     mode_b = os.lstat(path_b).st_mode
     if not stat.S_ISDIR(mode_b):
-        raise Exception("Not directory")
+        raise Exception('Not directory')
     if (mode_a & 0o777) != (mode_b & 0o777):
-        raise Exception("Permissions mismatch")
+        raise Exception('Permissions mismatch')
 
 
 def verify_link(tmpd, path_a):
     path_b = os.path.join(tmpd, path_a)
     if not stat.S_ISLNK(os.lstat(path_b).st_mode):
-        raise Exception("Not symlink")
+        raise Exception('Not symlink')
     if os.readlink(path_a) != os.readlink(path_b):
-        raise Exception("Symlink dest mismatch")
+        raise Exception('Symlink dest mismatch')
 
 
 def verify_file(tmpd, path_a):
@@ -123,16 +124,16 @@ def verify_file(tmpd, path_a):
     mode_a = os.lstat(path_a).st_mode
     mode_b = os.lstat(path_b).st_mode
     if not stat.S_ISREG(mode_b):
-        raise Exception("Not file")
+        raise Exception('Not file')
     if (mode_a & 0o777) != (mode_b & 0o777):
-        raise Exception("Permissions mismatch")
+        raise Exception('Permissions mismatch')
     if not filecmp.cmp(path_a, path_b, shallow=False):
-        raise Exception("File contents mismatch")
+        raise Exception('File contents mismatch')
 
 
 def verify_script(tmpd):
     any = False
-    for (dirpath, dirnames, filenames) in os.walk("sys"):
+    for dirpath, dirnames, filenames in os.walk('sys'):
         any = True
         try:
             path = dirpath
@@ -154,7 +155,8 @@ def verify_script(tmpd):
     if not any:
         exit('Nothing found!')
 
-if __name__ == "__main__":
+
+if __name__ == '__main__':
     if len(sys.argv) < 2:
         exit('Usage: create-sys-script.py /path/to/test/')
 
@@ -163,10 +165,9 @@ if __name__ == "__main__":
 
     os.chdir(sys.argv[1])
 
-    with open(outfile, "w") as f:
+    with open(outfile, 'w') as f:
         os.chmod(outfile, OUTFILE_MODE)
-        f.write(OUTFILE_HEADER.replace(os.path.basename(sys.argv[0]),
-                                       os.path.basename(outfile)))
+        f.write(OUTFILE_HEADER.replace(os.path.basename(sys.argv[0]), os.path.basename(outfile)))
         f.write(OUTFILE_FUNCS)
         f.write(OUTFILE_MAIN)
         process_sysdir(f)