1 files changed, 28 insertions, 24 deletions
diff --git a/tests/extmod/vfs_lfs_file.py b/tests/extmod/vfs_lfs_file.py
index 477a62e2f..774cca296 100644
--- a/tests/extmod/vfs_lfs_file.py
+++ b/tests/extmod/vfs_lfs_file.py
@@ -2,12 +2,14 @@
 
 try:
     import uos
+
     uos.VfsLfs1
     uos.VfsLfs2
 except (ImportError, AttributeError):
     print("SKIP")
     raise SystemExit
 
+
 class RAMBlockDevice:
     ERASE_BLOCK_SIZE = 1024
 
@@ -25,15 +27,16 @@ class RAMBlockDevice:
             self.data[addr + i] = buf[i]
 
     def ioctl(self, op, arg):
-        if op == 4: # block count
+        if op == 4:  # block count
             return len(self.data) // self.ERASE_BLOCK_SIZE
-        if op == 5: # block size
+        if op == 5:  # block size
             return self.ERASE_BLOCK_SIZE
-        if op == 6: # erase block
+        if op == 6:  # erase block
             return 0
 
+
 def test(bdev, vfs_class):
-    print('test', vfs_class)
+    print("test", vfs_class)
 
     # mkfs
     vfs_class.mkfs(bdev)
@@ -42,57 +45,57 @@ def test(bdev, vfs_class):
     vfs = vfs_class(bdev)
 
     # create text, print, write, close
-    f = vfs.open('test.txt', 'wt')
+    f = vfs.open("test.txt", "wt")
     print(f)
-    f.write('littlefs')
+    f.write("littlefs")
     f.close()
 
     # close already-closed file
     f.close()
 
     # create binary, print, write, flush, close
-    f = vfs.open('test.bin', 'wb')
+    f = vfs.open("test.bin", "wb")
     print(f)
-    f.write('littlefs')
+    f.write("littlefs")
     f.flush()
     f.close()
 
     # create for append
-    f = vfs.open('test.bin', 'ab')
-    f.write('more')
+    f = vfs.open("test.bin", "ab")
+    f.write("more")
     f.close()
 
     # create exclusive
-    f = vfs.open('test2.bin', 'xb')
+    f = vfs.open("test2.bin", "xb")
     f.close()
 
     # create exclusive with error
     try:
-        vfs.open('test2.bin', 'x')
+        vfs.open("test2.bin", "x")
     except OSError:
-        print('open OSError')
+        print("open OSError")
 
     # read default
-    with vfs.open('test.txt', '') as f:
+    with vfs.open("test.txt", "") as f:
         print(f.read())
 
     # read text
-    with vfs.open('test.txt', 'rt') as f:
+    with vfs.open("test.txt", "rt") as f:
         print(f.read())
 
     # read binary
-    with vfs.open('test.bin', 'rb') as f:
+    with vfs.open("test.bin", "rb") as f:
         print(f.read())
 
     # create read and write
-    with vfs.open('test.bin', 'r+b') as f:
+    with vfs.open("test.bin", "r+b") as f:
         print(f.read(8))
-        f.write('MORE')
-    with vfs.open('test.bin', 'rb') as f:
+        f.write("MORE")
+    with vfs.open("test.bin", "rb") as f:
         print(f.read())
 
     # seek and tell
-    f = vfs.open('test.txt', 'r')
+    f = vfs.open("test.txt", "r")
     print(f.tell())
     f.seek(3, 0)
     print(f.tell())
@@ -100,18 +103,19 @@ def test(bdev, vfs_class):
 
     # open nonexistent
     try:
-        vfs.open('noexist', 'r')
+        vfs.open("noexist", "r")
     except OSError:
-        print('open OSError')
+        print("open OSError")
 
     # open multiple files at the same time
-    f1 = vfs.open('test.txt', '')
-    f2 = vfs.open('test.bin', 'b')
+    f1 = vfs.open("test.txt", "")
+    f2 = vfs.open("test.bin", "b")
     print(f1.read())
     print(f2.read())
     f1.close()
     f2.close()
 
+
 bdev = RAMBlockDevice(30)
 test(bdev, uos.VfsLfs1)
 test(bdev, uos.VfsLfs2)