tests: Format all Python code with black, except tests in basics subdir.

This adds the Python files in the tests/ directory to be formatted with
./tools/codeformat.py.  The basics/ subdirectory is excluded for now so we
aren't changing too much at once.

In a few places `# fmt: off`/`# fmt: on` was used where the code had
special formatting for readability or where the test was actually testing
the specific formatting.

1 files changed, 19 insertions, 10 deletions

diff --git a/tests/extmod/vfs_userfs.py b/tests/extmod/vfs_userfs.py
index 7f6e48cb1..06e546b08 100644
--- a/tests/extmod/vfs_userfs.py
+++ b/tests/extmod/vfs_userfs.py
@@ -5,8 +5,10 @@ import sys
 
 try:
     import uio
+
     uio.IOBase
     import uos
+
     uos.mount
 except (ImportError, AttributeError):
     print("SKIP")
@@ -17,8 +19,10 @@ class UserFile(uio.IOBase):
     def __init__(self, data):
         self.data = data
         self.pos = 0
+
     def read(self):
         return self.data
+
     def readinto(self, buf):
         n = 0
         while n < len(buf) and self.pos < len(self.data):
@@ -26,44 +30,49 @@ class UserFile(uio.IOBase):
             n += 1
             self.pos += 1
         return n
+
     def ioctl(self, req, arg):
-        print('ioctl', req, arg)
+        print("ioctl", req, arg)
         return 0
 
 
 class UserFS:
     def __init__(self, files):
         self.files = files
+
     def mount(self, readonly, mksfs):
         pass
+
     def umount(self):
         pass
+
     def stat(self, path):
-        print('stat', path)
+        print("stat", path)
         if path in self.files:
             return (32768, 0, 0, 0, 0, 0, 0, 0, 0, 0)
         raise OSError
+
     def open(self, path, mode):
-        print('open', path, mode)
+        print("open", path, mode)
         return UserFile(self.files[path])
 
 
 # create and mount a user filesystem
 user_files = {
-    '/data.txt': b"some data in a text file\n",
-    '/usermod1.py': b"print('in usermod1')\nimport usermod2",
-    '/usermod2.py': b"print('in usermod2')",
+    "/data.txt": b"some data in a text file\n",
+    "/usermod1.py": b"print('in usermod1')\nimport usermod2",
+    "/usermod2.py": b"print('in usermod2')",
 }
-uos.mount(UserFS(user_files), '/userfs')
+uos.mount(UserFS(user_files), "/userfs")
 
 # open and read a file
-f = open('/userfs/data.txt')
+f = open("/userfs/data.txt")
 print(f.read())
 
 # import files from the user filesystem
-sys.path.append('/userfs')
+sys.path.append("/userfs")
 import usermod1
 
 # unmount and undo path addition
-uos.umount('/userfs')
+uos.umount("/userfs")
 sys.path.pop()