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.

tests/unicode/file2.py

@@ -1,11 +1,12 @@
 # test reading a given number of characters
 
+
 def do(mode):
-    if mode == 'rb':
+    if mode == "rb":
         enc = None
     else:
-        enc = 'utf-8'
-    f = open('unicode/data/utf-8_2.txt', mode=mode, encoding=enc)
+        enc = "utf-8"
+    f = open("unicode/data/utf-8_2.txt", mode=mode, encoding=enc)
     print(f.read(1))
     print(f.read(1))
     print(f.read(2))
@@ -15,12 +16,13 @@ def do(mode):
     f.readline()
 
     # check 3-byte utf-8 char
-    print(f.read(1 if mode == 'rt' else 3))
+    print(f.read(1 if mode == "rt" else 3))
 
     # check 4-byte utf-8 char
-    print(f.read(1 if mode == 'rt' else 4))
+    print(f.read(1 if mode == "rt" else 4))
 
     f.close()
 
-do('rb')
-do('rt')
+
+do("rb")
+do("rt")

tests/unicode/unicode.py

@@ -1,17 +1,17 @@
 # Test a UTF-8 encoded literal
 s = "asdf©qwer"
 for i in range(len(s)):
-    print("s[%d]: %s   %X"%(i, s[i], ord(s[i])))
+    print("s[%d]: %s   %X" % (i, s[i], ord(s[i])))
 
 # Test all three forms of Unicode escape, and
 # all blocks of UTF-8 byte patterns
 s = "a\xA9\xFF\u0123\u0800\uFFEE\U0001F44C"
 for i in range(-len(s), len(s)):
-    print("s[%d]: %s   %X"%(i, s[i], ord(s[i])))
-    print("s[:%d]: %d chars, '%s'"%(i, len(s[:i]), s[:i]))
+    print("s[%d]: %s   %X" % (i, s[i], ord(s[i])))
+    print("s[:%d]: %d chars, '%s'" % (i, len(s[:i]), s[:i]))
     for j in range(i, len(s)):
-        print("s[%d:%d]: %d chars, '%s'"%(i, j, len(s[i:j]), s[i:j]))
-    print("s[%d:]: %d chars, '%s'"%(i, len(s[i:]), s[i:]))
+        print("s[%d:%d]: %d chars, '%s'" % (i, j, len(s[i:j]), s[i:j]))
+    print("s[%d:]: %d chars, '%s'" % (i, len(s[i:]), s[i:]))
 
 # Test UTF-8 encode and decode
 enc = s.encode()
@@ -19,35 +19,35 @@ print(enc, enc.decode() == s)
 
 # printing of unicode chars using repr
 # NOTE: for some characters (eg \u10ff) we differ to CPython
-print(repr('a\uffff'))
-print(repr('a\U0001ffff'))
+print(repr("a\uffff"))
+print(repr("a\U0001ffff"))
 
 # test invalid escape code
 try:
     eval('"\\U00110000"')
 except SyntaxError:
-    print('SyntaxError')
+    print("SyntaxError")
 
 # test unicode string given to int
 try:
-    int('\u0200')
+    int("\u0200")
 except ValueError:
-    print('ValueError')
+    print("ValueError")
 
 # test invalid UTF-8 string
 try:
-    str(b'ab\xa1', 'utf8')
+    str(b"ab\xa1", "utf8")
 except UnicodeError:
-    print('UnicodeError')
+    print("UnicodeError")
 try:
-    str(b'ab\xf8', 'utf8')
+    str(b"ab\xf8", "utf8")
 except UnicodeError:
-    print('UnicodeError')
+    print("UnicodeError")
 try:
-    str(bytearray(b'ab\xc0a'), 'utf8')
+    str(bytearray(b"ab\xc0a"), "utf8")
 except UnicodeError:
-    print('UnicodeError')
+    print("UnicodeError")
 try:
-    str(b'\xf0\xe0\xed\xe8', 'utf8')
+    str(b"\xf0\xe0\xed\xe8", "utf8")
 except UnicodeError:
-    print('UnicodeError')
+    print("UnicodeError")

tests/unicode/unicode_id.py

@@ -14,14 +14,19 @@ print(α, αβγ, bβ, βb)
 def α(β, γ):
     δ = β + γ
     print(β, γ, δ)
+
+
 α(1, 2)
 
 # class, method identifiers
 class φ:
     def __init__(self):
         pass
+
     def δ(self, ϵ):
         print(ϵ)
+
+
 zζzζz = φ()
 if hasattr(zζzζz, "δ"):
     zζzζz.δ(ϵ=123)

tests/unicode/unicode_ord.py

@@ -1,3 +1,3 @@
 # test builtin ord with unicode characters
 
-print(ord('α'))
+print(ord("α"))

tests/unicode/unicode_str_format.py

@@ -1,4 +1,4 @@
 # test handling of unicode chars in format strings
 
-print('α'.format())
-print('{α}'.format(α=1))
+print("α".format())
+print("{α}".format(α=1))

tests/unicode/unicode_str_modulo.py

@@ -1,3 +1,3 @@
 # test handling of unicode chars in string % formatting
 
-print('α' % ())
+print("α" % ())

tests/unicode/unicode_subscr.py

@@ -1,4 +1,4 @@
-a = '¢пр'
+a = "¢пр"
 
 print(a[0], a[0:1])
 print(a[1], a[1:2])