Merge pull request #4362 from microDev1/code-formatting

Add code formatting and translations check

26 files changed, 372 insertions, 60 deletions

diff --git a/tests/thread/mutate_bytearray.py b/tests/thread/mutate_bytearray.py
index 5015c3f9c..9b52e0c01 100644
--- a/tests/thread/mutate_bytearray.py
+++ b/tests/thread/mutate_bytearray.py
@@ -25,10 +25,11 @@ def th(n, lo, hi):
         global n_finished
         n_finished += 1
 
+
 lock = _thread.allocate_lock()
 n_thread = 4
 n_finished = 0
-n_repeat = 4 # use 40 for more stressful test (uses more heap)
+n_repeat = 4  # use 40 for more stressful test (uses more heap)
 
 # spawn threads
 for i in range(n_thread):
diff --git a/tests/thread/mutate_dict.py b/tests/thread/mutate_dict.py
index 563fce39d..0840dcafb 100644
--- a/tests/thread/mutate_dict.py
+++ b/tests/thread/mutate_dict.py
@@ -7,7 +7,7 @@
 import _thread
 
 # the shared dict
-di = {'a':'A', 'b':'B', 'c':'C', 'd':'D'}
+di = {"a": "A", "b": "B", "c": "C", "d": "D"}
 
 # main thread function
 def th(n, lo, hi):
@@ -28,6 +28,7 @@ def th(n, lo, hi):
         global n_finished
         n_finished += 1
 
+
 lock = _thread.allocate_lock()
 n_thread = 4
 n_finished = 0
diff --git a/tests/thread/mutate_instance.py b/tests/thread/mutate_instance.py
index 2ecfbe109..8ba91cbde 100644
--- a/tests/thread/mutate_instance.py
+++ b/tests/thread/mutate_instance.py
@@ -9,25 +9,28 @@ import _thread
 # the shared user class and instance
 class User:
     def __init__(self):
-        self.a = 'A'
-        self.b = 'B'
-        self.c = 'C'
+        self.a = "A"
+        self.b = "B"
+        self.c = "C"
+
+
 user = User()
 
 # main thread function
 def th(n, lo, hi):
     for repeat in range(n):
         for i in range(lo, hi):
-            setattr(user, 'attr_%u' % i, repeat + i)
-            assert getattr(user, 'attr_%u' % i) == repeat + i
+            setattr(user, "attr_%u" % i, repeat + i)
+            assert getattr(user, "attr_%u" % i) == repeat + i
 
     with lock:
         global n_finished
         n_finished += 1
 
+
 lock = _thread.allocate_lock()
 n_repeat = 30
-n_range = 50 # 300 for stressful test (uses more heap)
+n_range = 50  # 300 for stressful test (uses more heap)
 n_thread = 4
 n_finished = 0
 
@@ -42,4 +45,4 @@ while n_finished < n_thread:
 # check user instance has correct contents
 print(user.a, user.b, user.c)
 for i in range(n_thread * n_range):
-    assert getattr(user, 'attr_%u' % i) == n_repeat - 1 + i
+    assert getattr(user, "attr_%u" % i) == n_repeat - 1 + i
diff --git a/tests/thread/mutate_list.py b/tests/thread/mutate_list.py
index d70e8a8a3..8ce15c085 100644
--- a/tests/thread/mutate_list.py
+++ b/tests/thread/mutate_list.py
@@ -29,6 +29,7 @@ def th(n, lo, hi):
         global n_finished
         n_finished += 1
 
+
 lock = _thread.allocate_lock()
 n_thread = 4
 n_finished = 0
diff --git a/tests/thread/mutate_set.py b/tests/thread/mutate_set.py
index c4529f356..61169b8aa 100644
--- a/tests/thread/mutate_set.py
+++ b/tests/thread/mutate_set.py
@@ -23,6 +23,7 @@ def th(n, lo, hi):
         global n_finished
         n_finished += 1
 
+
 lock = _thread.allocate_lock()
 n_thread = 4
 n_finished = 0
diff --git a/tests/thread/stress_aes.py b/tests/thread/stress_aes.py
index ebf7af371..3191192a4 100644
--- a/tests/thread/stress_aes.py
+++ b/tests/thread/stress_aes.py
@@ -19,49 +19,295 @@
 # discrete arithmetic routines, mostly from a precomputed table
 
 # non-linear, invertible, substitution box
-aes_s_box_table = bytes((
-    0x63,0x7c,0x77,0x7b,0xf2,0x6b,0x6f,0xc5,0x30,0x01,0x67,0x2b,0xfe,0xd7,0xab,0x76,
-    0xca,0x82,0xc9,0x7d,0xfa,0x59,0x47,0xf0,0xad,0xd4,0xa2,0xaf,0x9c,0xa4,0x72,0xc0,
-    0xb7,0xfd,0x93,0x26,0x36,0x3f,0xf7,0xcc,0x34,0xa5,0xe5,0xf1,0x71,0xd8,0x31,0x15,
-    0x04,0xc7,0x23,0xc3,0x18,0x96,0x05,0x9a,0x07,0x12,0x80,0xe2,0xeb,0x27,0xb2,0x75,
-    0x09,0x83,0x2c,0x1a,0x1b,0x6e,0x5a,0xa0,0x52,0x3b,0xd6,0xb3,0x29,0xe3,0x2f,0x84,
-    0x53,0xd1,0x00,0xed,0x20,0xfc,0xb1,0x5b,0x6a,0xcb,0xbe,0x39,0x4a,0x4c,0x58,0xcf,
-    0xd0,0xef,0xaa,0xfb,0x43,0x4d,0x33,0x85,0x45,0xf9,0x02,0x7f,0x50,0x3c,0x9f,0xa8,
-    0x51,0xa3,0x40,0x8f,0x92,0x9d,0x38,0xf5,0xbc,0xb6,0xda,0x21,0x10,0xff,0xf3,0xd2,
-    0xcd,0x0c,0x13,0xec,0x5f,0x97,0x44,0x17,0xc4,0xa7,0x7e,0x3d,0x64,0x5d,0x19,0x73,
-    0x60,0x81,0x4f,0xdc,0x22,0x2a,0x90,0x88,0x46,0xee,0xb8,0x14,0xde,0x5e,0x0b,0xdb,
-    0xe0,0x32,0x3a,0x0a,0x49,0x06,0x24,0x5c,0xc2,0xd3,0xac,0x62,0x91,0x95,0xe4,0x79,
-    0xe7,0xc8,0x37,0x6d,0x8d,0xd5,0x4e,0xa9,0x6c,0x56,0xf4,0xea,0x65,0x7a,0xae,0x08,
-    0xba,0x78,0x25,0x2e,0x1c,0xa6,0xb4,0xc6,0xe8,0xdd,0x74,0x1f,0x4b,0xbd,0x8b,0x8a,
-    0x70,0x3e,0xb5,0x66,0x48,0x03,0xf6,0x0e,0x61,0x35,0x57,0xb9,0x86,0xc1,0x1d,0x9e,
-    0xe1,0xf8,0x98,0x11,0x69,0xd9,0x8e,0x94,0x9b,0x1e,0x87,0xe9,0xce,0x55,0x28,0xdf,
-    0x8c,0xa1,0x89,0x0d,0xbf,0xe6,0x42,0x68,0x41,0x99,0x2d,0x0f,0xb0,0x54,0xbb,0x16,
-))
+aes_s_box_table = bytes(
+    (
+        0x63,
+        0x7C,
+        0x77,
+        0x7B,
+        0xF2,
+        0x6B,
+        0x6F,
+        0xC5,
+        0x30,
+        0x01,
+        0x67,
+        0x2B,
+        0xFE,
+        0xD7,
+        0xAB,
+        0x76,
+        0xCA,
+        0x82,
+        0xC9,
+        0x7D,
+        0xFA,
+        0x59,
+        0x47,
+        0xF0,
+        0xAD,
+        0xD4,
+        0xA2,
+        0xAF,
+        0x9C,
+        0xA4,
+        0x72,
+        0xC0,
+        0xB7,
+        0xFD,
+        0x93,
+        0x26,
+        0x36,
+        0x3F,
+        0xF7,
+        0xCC,
+        0x34,
+        0xA5,
+        0xE5,
+        0xF1,
+        0x71,
+        0xD8,
+        0x31,
+        0x15,
+        0x04,
+        0xC7,
+        0x23,
+        0xC3,
+        0x18,
+        0x96,
+        0x05,
+        0x9A,
+        0x07,
+        0x12,
+        0x80,
+        0xE2,
+        0xEB,
+        0x27,
+        0xB2,
+        0x75,
+        0x09,
+        0x83,
+        0x2C,
+        0x1A,
+        0x1B,
+        0x6E,
+        0x5A,
+        0xA0,
+        0x52,
+        0x3B,
+        0xD6,
+        0xB3,
+        0x29,
+        0xE3,
+        0x2F,
+        0x84,
+        0x53,
+        0xD1,
+        0x00,
+        0xED,
+        0x20,
+        0xFC,
+        0xB1,
+        0x5B,
+        0x6A,
+        0xCB,
+        0xBE,
+        0x39,
+        0x4A,
+        0x4C,
+        0x58,
+        0xCF,
+        0xD0,
+        0xEF,
+        0xAA,
+        0xFB,
+        0x43,
+        0x4D,
+        0x33,
+        0x85,
+        0x45,
+        0xF9,
+        0x02,
+        0x7F,
+        0x50,
+        0x3C,
+        0x9F,
+        0xA8,
+        0x51,
+        0xA3,
+        0x40,
+        0x8F,
+        0x92,
+        0x9D,
+        0x38,
+        0xF5,
+        0xBC,
+        0xB6,
+        0xDA,
+        0x21,
+        0x10,
+        0xFF,
+        0xF3,
+        0xD2,
+        0xCD,
+        0x0C,
+        0x13,
+        0xEC,
+        0x5F,
+        0x97,
+        0x44,
+        0x17,
+        0xC4,
+        0xA7,
+        0x7E,
+        0x3D,
+        0x64,
+        0x5D,
+        0x19,
+        0x73,
+        0x60,
+        0x81,
+        0x4F,
+        0xDC,
+        0x22,
+        0x2A,
+        0x90,
+        0x88,
+        0x46,
+        0xEE,
+        0xB8,
+        0x14,
+        0xDE,
+        0x5E,
+        0x0B,
+        0xDB,
+        0xE0,
+        0x32,
+        0x3A,
+        0x0A,
+        0x49,
+        0x06,
+        0x24,
+        0x5C,
+        0xC2,
+        0xD3,
+        0xAC,
+        0x62,
+        0x91,
+        0x95,
+        0xE4,
+        0x79,
+        0xE7,
+        0xC8,
+        0x37,
+        0x6D,
+        0x8D,
+        0xD5,
+        0x4E,
+        0xA9,
+        0x6C,
+        0x56,
+        0xF4,
+        0xEA,
+        0x65,
+        0x7A,
+        0xAE,
+        0x08,
+        0xBA,
+        0x78,
+        0x25,
+        0x2E,
+        0x1C,
+        0xA6,
+        0xB4,
+        0xC6,
+        0xE8,
+        0xDD,
+        0x74,
+        0x1F,
+        0x4B,
+        0xBD,
+        0x8B,
+        0x8A,
+        0x70,
+        0x3E,
+        0xB5,
+        0x66,
+        0x48,
+        0x03,
+        0xF6,
+        0x0E,
+        0x61,
+        0x35,
+        0x57,
+        0xB9,
+        0x86,
+        0xC1,
+        0x1D,
+        0x9E,
+        0xE1,
+        0xF8,
+        0x98,
+        0x11,
+        0x69,
+        0xD9,
+        0x8E,
+        0x94,
+        0x9B,
+        0x1E,
+        0x87,
+        0xE9,
+        0xCE,
+        0x55,
+        0x28,
+        0xDF,
+        0x8C,
+        0xA1,
+        0x89,
+        0x0D,
+        0xBF,
+        0xE6,
+        0x42,
+        0x68,
+        0x41,
+        0x99,
+        0x2D,
+        0x0F,
+        0xB0,
+        0x54,
+        0xBB,
+        0x16,
+    )
+)
 
 # multiplication of polynomials modulo x^8 + x^4 + x^3 + x + 1 = 0x11b
 def aes_gf8_mul_2(x):
     if x & 0x80:
-        return (x << 1) ^ 0x11b
+        return (x << 1) ^ 0x11B
     else:
         return x << 1
 
+
 def aes_gf8_mul_3(x):
     return x ^ aes_gf8_mul_2(x)
 
+
 # non-linear, invertible, substitution box
 def aes_s_box(a):
-    return aes_s_box_table[a & 0xff]
+    return aes_s_box_table[a & 0xFF]
+
 
 # return 0x02^(a-1) in GF(2^8)
 def aes_r_con(a):
     ans = 1
     while a > 1:
-        ans <<= 1;
+        ans <<= 1
         if ans & 0x100:
-            ans ^= 0x11b
+            ans ^= 0x11B
         a -= 1
     return ans
 
+
 ##################################################################
 # basic AES algorithm; see FIPS-197
 #
@@ -81,6 +327,7 @@ def aes_add_round_key(state, w):
     for i in range(16):
         state[i] ^= w[i]
 
+
 # combined sub_bytes, shift_rows, mix_columns, add_round_key
 # all inputs must be size 16
 def aes_sb_sr_mc_ark(state, w, w_idx, temp):
@@ -90,7 +337,7 @@ def aes_sb_sr_mc_ark(state, w, w_idx, temp):
         x1 = aes_s_box_table[state[1 + ((i + 1) & 3) * 4]]
         x2 = aes_s_box_table[state[2 + ((i + 2) & 3) * 4]]
         x3 = aes_s_box_table[state[3 + ((i + 3) & 3) * 4]]
-        temp[temp_idx]     = aes_gf8_mul_2(x0) ^ aes_gf8_mul_3(x1) ^ x2 ^ x3 ^ w[w_idx]
+        temp[temp_idx] = aes_gf8_mul_2(x0) ^ aes_gf8_mul_3(x1) ^ x2 ^ x3 ^ w[w_idx]
         temp[temp_idx + 1] = x0 ^ aes_gf8_mul_2(x1) ^ aes_gf8_mul_3(x2) ^ x3 ^ w[w_idx + 1]
         temp[temp_idx + 2] = x0 ^ x1 ^ aes_gf8_mul_2(x2) ^ aes_gf8_mul_3(x3) ^ w[w_idx + 2]
         temp[temp_idx + 3] = aes_gf8_mul_3(x0) ^ x1 ^ x2 ^ aes_gf8_mul_2(x3) ^ w[w_idx + 3]
@@ -99,6 +346,7 @@ def aes_sb_sr_mc_ark(state, w, w_idx, temp):
     for i in range(16):
         state[i] = temp[i]
 
+
 # combined sub_bytes, shift_rows, add_round_key
 # all inputs must be size 16
 def aes_sb_sr_ark(state, w, w_idx, temp):
@@ -108,7 +356,7 @@ def aes_sb_sr_ark(state, w, w_idx, temp):
         x1 = aes_s_box_table[state[1 + ((i + 1) & 3) * 4]]
         x2 = aes_s_box_table[state[2 + ((i + 2) & 3) * 4]]
         x3 = aes_s_box_table[state[3 + ((i + 3) & 3) * 4]]
-        temp[temp_idx]     = x0 ^ w[w_idx]
+        temp[temp_idx] = x0 ^ w[w_idx]
         temp[temp_idx + 1] = x1 ^ w[w_idx + 1]
         temp[temp_idx + 2] = x2 ^ w[w_idx + 2]
         temp[temp_idx + 3] = x3 ^ w[w_idx + 3]
@@ -117,6 +365,7 @@ def aes_sb_sr_ark(state, w, w_idx, temp):
     for i in range(16):
         state[i] = temp[i]
 
+
 # take state as input and change it to the next state in the sequence
 # state and temp have size 16, w has size 16 * (Nr + 1), Nr >= 1
 def aes_state(state, w, temp, nr):
@@ -127,6 +376,7 @@ def aes_state(state, w, temp, nr):
         w_idx += 16
     aes_sb_sr_ark(state, w, w_idx, temp)
 
+
 # expand 'key' to 'w' for use with aes_state
 # key has size 4 * Nk, w has size 16 * (Nr + 1), temp has size 16
 def aes_key_expansion(key, w, temp, nk, nr):
@@ -150,9 +400,11 @@ def aes_key_expansion(key, w, temp, nk, nr):
         for j in range(4):
             w[w_idx + j] = w[w_idx + j - 4 * nk] ^ t[t_idx + j]
 
+
 ##################################################################
 # simple use of AES algorithm, using output feedback (OFB) mode
 
+
 class AES:
     def __init__(self, keysize):
         if keysize == 128:
@@ -178,7 +430,7 @@ class AES:
     def set_iv(self, iv):
         for i in range(16):
             self.state[i] = iv[i]
-        self.state_pos = 16;
+        self.state_pos = 16
 
     def get_some_state(self, n_needed):
         if self.state_pos >= 16:
@@ -200,6 +452,7 @@ class AES:
             idx += ln
             self.state_pos += n
 
+
 ##################################################################
 # test code
 
@@ -209,6 +462,7 @@ except ImportError:
     import time
 import _thread
 
+
 class LockedCounter:
     def __init__(self):
         self.lock = _thread.allocate_lock()
@@ -219,8 +473,10 @@ class LockedCounter:
         self.value += val
         self.lock.release()
 
+
 count = LockedCounter()
 
+
 def thread_entry():
     global count
 
@@ -249,7 +505,8 @@ def thread_entry():
 
     count.add(1)
 
-if __name__ == '__main__':
+
+if __name__ == "__main__":
     n_thread = 20
     for i in range(n_thread):
         _thread.start_new_thread(thread_entry, ())
diff --git a/tests/thread/stress_create.py b/tests/thread/stress_create.py
index 2399746cc..eda768fa7 100644
--- a/tests/thread/stress_create.py
+++ b/tests/thread/stress_create.py
@@ -6,9 +6,11 @@ except ImportError:
     import time
 import _thread
 
+
 def thread_entry(n):
     pass
 
+
 thread_num = 0
 while thread_num < 500:
     try:
@@ -19,4 +21,4 @@ while thread_num < 500:
 
 # wait for the last threads to terminate
 time.sleep(1)
-print('done')
+print("done")
diff --git a/tests/thread/stress_heap.py b/tests/thread/stress_heap.py
index 206cf1a86..41dfa5f37 100644
--- a/tests/thread/stress_heap.py
+++ b/tests/thread/stress_heap.py
@@ -11,9 +11,11 @@ except ImportError:
     import time
 import _thread
 
+
 def last(l):
     return l[-1]
 
+
 def thread_entry(n):
     # allocate a bytearray and fill it
     data = bytearray(i for i in range(256))
@@ -35,6 +37,7 @@ def thread_entry(n):
         global n_finished
         n_finished += 1
 
+
 lock = _thread.allocate_lock()
 n_thread = 10
 n_finished = 0
diff --git a/tests/thread/stress_recurse.py b/tests/thread/stress_recurse.py
index 8edee246a..b7a128821 100644
--- a/tests/thread/stress_recurse.py
+++ b/tests/thread/stress_recurse.py
@@ -6,17 +6,20 @@
 
 import _thread
 
+
 def foo():
     foo()
 
+
 def thread_entry():
     try:
         foo()
     except RuntimeError:
-        print('RuntimeError')
+        print("RuntimeError")
     global finished
     finished = True
 
+
 finished = False
 
 _thread.start_new_thread(thread_entry, ())
@@ -24,4 +27,4 @@ _thread.start_new_thread(thread_entry, ())
 # busy wait for thread to finish
 while not finished:
     pass
-print('done')
+print("done")
diff --git a/tests/thread/thread_exc1.py b/tests/thread/thread_exc1.py
index e00a16bd2..3c3a1e8be 100644
--- a/tests/thread/thread_exc1.py
+++ b/tests/thread/thread_exc1.py
@@ -6,9 +6,11 @@
 
 import _thread
 
+
 def foo():
     raise ValueError
 
+
 def thread_entry():
     try:
         foo()
@@ -18,6 +20,7 @@ def thread_entry():
         global n_finished
         n_finished += 1
 
+
 lock = _thread.allocate_lock()
 n_thread = 4
 n_finished = 0
@@ -29,4 +32,4 @@ for i in range(n_thread):
 # busy wait for threads to finish
 while n_finished < n_thread:
     pass
-print('done')
+print("done")
diff --git a/tests/thread/thread_exc2.py b/tests/thread/thread_exc2.py
index 35cb32441..2863e1dec 100644
--- a/tests/thread/thread_exc2.py
+++ b/tests/thread/thread_exc2.py
@@ -2,9 +2,11 @@
 import utime
 import _thread
 
+
 def thread_entry():
     raise ValueError
 
+
 _thread.start_new_thread(thread_entry, ())
 utime.sleep(1)
-print('done')
+print("done")
diff --git a/tests/thread/thread_exit1.py b/tests/thread/thread_exit1.py
index ad7b01d89..6179716d1 100644
--- a/tests/thread/thread_exit1.py
+++ b/tests/thread/thread_exit1.py
@@ -10,12 +10,14 @@ except ImportError:
     import time
 import _thread
 
+
 def thread_entry():
     _thread.exit()
 
+
 _thread.start_new_thread(thread_entry, ())
 _thread.start_new_thread(thread_entry, ())
 
 # wait for threads to finish
 time.sleep(1)
-print('done')
+print("done")
diff --git a/tests/thread/thread_exit2.py b/tests/thread/thread_exit2.py
index 6bff8a173..ba9852b5c 100644
--- a/tests/thread/thread_exit2.py
+++ b/tests/thread/thread_exit2.py
@@ -10,12 +10,14 @@ except ImportError:
     import time
 import _thread
 
+
 def thread_entry():
     raise SystemExit
 
+
 _thread.start_new_thread(thread_entry, ())
 _thread.start_new_thread(thread_entry, ())
 
 # wait for threads to finish
 time.sleep(1)
-print('done')
+print("done")
diff --git a/tests/thread/thread_gc1.py b/tests/thread/thread_gc1.py
index 2ea189161..4e4faeaf8 100644
--- a/tests/thread/thread_gc1.py
+++ b/tests/thread/thread_gc1.py
@@ -7,6 +7,7 @@
 import gc
 import _thread
 
+
 def thread_entry(n):
     # allocate a bytearray and fill it
     data = bytearray(i for i in range(256))
@@ -23,6 +24,7 @@ def thread_entry(n):
         global n_finished
         n_finished += 1
 
+
 lock = _thread.allocate_lock()
 n_thread = 4
 n_finished = 0
diff --git a/tests/thread/thread_ident1.py b/tests/thread/thread_ident1.py
index 9a6f89ff5..1ba342e2b 100644
--- a/tests/thread/thread_ident1.py
+++ b/tests/thread/thread_ident1.py
@@ -6,18 +6,20 @@
 
 import _thread
 
+
 def thread_entry():
     tid = _thread.get_ident()
-    print('thread', type(tid) == int, tid != 0, tid != tid_main)
+    print("thread", type(tid) == int, tid != 0, tid != tid_main)
     global finished
     finished = True
 
+
 tid_main = _thread.get_ident()
-print('main', type(tid_main) == int, tid_main != 0)
+print("main", type(tid_main) == int, tid_main != 0)
 
 finished = False
 _thread.start_new_thread(thread_entry, ())
 
 while not finished:
     pass
-print('done')
+print("done")
diff --git a/tests/thread/thread_lock1.py b/tests/thread/thread_lock1.py
index c2d7c9d1e..e7066402c 100644
--- a/tests/thread/thread_lock1.py
+++ b/tests/thread/thread_lock1.py
@@ -38,11 +38,11 @@ try:
         print(lock.locked())
         raise KeyError
 except KeyError:
-    print('KeyError')
+    print("KeyError")
     print(lock.locked())
 
 # test that we can't release an unlocked lock
 try:
     lock.release()
 except RuntimeError:
-    print('RuntimeError')
+    print("RuntimeError")
diff --git a/tests/thread/thread_lock2.py b/tests/thread/thread_lock2.py
index 4ef912dff..c43b4b18d 100644
--- a/tests/thread/thread_lock2.py
+++ b/tests/thread/thread_lock2.py
@@ -12,15 +12,17 @@ import _thread
 
 lock = _thread.allocate_lock()
 
+
 def thread_entry():
     lock.acquire()
-    print('have it')
+    print("have it")
     lock.release()
 
+
 # spawn the threads
 for i in range(4):
     _thread.start_new_thread(thread_entry, ())
 
 # wait for threads to finish
 time.sleep(1)
-print('done')
+print("done")
diff --git a/tests/thread/thread_lock3.py b/tests/thread/thread_lock3.py
index 35808d99c..32d0c54b5 100644
--- a/tests/thread/thread_lock3.py
+++ b/tests/thread/thread_lock3.py
@@ -10,16 +10,18 @@ lock = _thread.allocate_lock()
 n_thread = 10
 n_finished = 0
 
+
 def thread_entry(idx):
     global n_finished
     while True:
         with lock:
             if n_finished == idx:
                 break
-    print('my turn:', idx)
+    print("my turn:", idx)
     with lock:
         n_finished += 1
 
+
 # spawn threads
 for i in range(n_thread):
     _thread.start_new_thread(thread_entry, (i,))
diff --git a/tests/thread/thread_lock4.py b/tests/thread/thread_lock4.py
index 440f3e90c..7637d10b9 100644
--- a/tests/thread/thread_lock4.py
+++ b/tests/thread/thread_lock4.py
@@ -10,12 +10,14 @@ except ImportError:
     import time
 import _thread
 
+
 def fac(n):
     x = 1
     for i in range(1, n + 1):
         x *= i
     return x
 
+
 def thread_entry():
     while True:
         with jobs_lock:
@@ -27,6 +29,7 @@ def thread_entry():
         with output_lock:
             output.append((arg, ans))
 
+
 # create a list of jobs
 jobs = [(fac, i) for i in range(20, 80)]
 jobs_lock = _thread.allocate_lock()
diff --git a/tests/thread/thread_qstr1.py b/tests/thread/thread_qstr1.py
index dccfb7f51..2099f94bd 100644
--- a/tests/thread/thread_qstr1.py
+++ b/tests/thread/thread_qstr1.py
@@ -15,6 +15,7 @@ def check(s, val):
     assert type(s) == str
     assert int(s) == val
 
+
 # main thread function
 def th(base, n):
     for i in range(n):
@@ -25,10 +26,11 @@ def th(base, n):
         global n_finished
         n_finished += 1
 
+
 lock = _thread.allocate_lock()
 n_thread = 4
 n_finished = 0
-n_qstr_per_thread = 100 # make 1000 for a more stressful test (uses more heap)
+n_qstr_per_thread = 100  # make 1000 for a more stressful test (uses more heap)
 
 # spawn threads
 for i in range(n_thread):
@@ -38,4 +40,4 @@ for i in range(n_thread):
 while n_finished < n_thread:
     time.sleep(1)
 
-print('pass')
+print("pass")
diff --git a/tests/thread/thread_shared1.py b/tests/thread/thread_shared1.py
index de339ad7f..87f8b51e2 100644
--- a/tests/thread/thread_shared1.py
+++ b/tests/thread/thread_shared1.py
@@ -6,9 +6,11 @@
 
 import _thread
 
+
 def foo(i):
     pass
 
+
 def thread_entry(n, tup):
     for i in tup:
         foo(i)
@@ -16,6 +18,7 @@ def thread_entry(n, tup):
         global n_finished
         n_finished += 1
 
+
 lock = _thread.allocate_lock()
 n_thread = 2
 n_finished = 0
diff --git a/tests/thread/thread_shared2.py b/tests/thread/thread_shared2.py
index 2c749e688..dbe18f987 100644
--- a/tests/thread/thread_shared2.py
+++ b/tests/thread/thread_shared2.py
@@ -7,9 +7,11 @@
 
 import _thread
 
+
 def foo(lst, i):
     lst[i] += 1
 
+
 def thread_entry(n, lst, idx):
     for i in range(n):
         foo(lst, idx)
@@ -17,6 +19,7 @@ def thread_entry(n, lst, idx):
         global n_finished
         n_finished += 1
 
+
 lock = _thread.allocate_lock()
 n_thread = 2
 n_finished = 0
diff --git a/tests/thread/thread_sleep1.py b/tests/thread/thread_sleep1.py
index d5aa99f97..d81d53739 100644
--- a/tests/thread/thread_sleep1.py
+++ b/tests/thread/thread_sleep1.py
@@ -6,9 +6,11 @@
 
 try:
     import utime
+
     sleep_ms = utime.sleep_ms
 except ImportError:
     import time
+
     sleep_ms = lambda t: time.sleep(t / 1000)
 
 import _thread
@@ -17,6 +19,7 @@ lock = _thread.allocate_lock()
 n_thread = 4
 n_finished = 0
 
+
 def thread_entry(t):
     global n_finished
     sleep_ms(t)
@@ -24,10 +27,11 @@ def thread_entry(t):
     with lock:
         n_finished += 1
 
+
 for i in range(n_thread):
     _thread.start_new_thread(thread_entry, (10 * i,))
 
 # wait for threads to finish
 while n_finished < n_thread:
     sleep_ms(100)
-print('done', n_thread)
+print("done", n_thread)
diff --git a/tests/thread/thread_stacksize1.py b/tests/thread/thread_stacksize1.py
index e7189fafb..0c6e7a92c 100644
--- a/tests/thread/thread_stacksize1.py
+++ b/tests/thread/thread_stacksize1.py
@@ -8,20 +8,23 @@ import sys
 import _thread
 
 # different implementations have different minimum sizes
-if sys.implementation.name == 'micropython':
+if sys.implementation.name == "micropython":
     sz = 2 * 1024
 else:
     sz = 32 * 1024
 
+
 def foo():
     pass
 
+
 def thread_entry():
     foo()
     with lock:
         global n_finished
         n_finished += 1
 
+
 # reset stack size to default
 _thread.stack_size()
 
@@ -46,4 +49,4 @@ _thread.stack_size()
 # busy wait for threads to finish
 while n_finished < n_thread:
     pass
-print('done')
+print("done")
diff --git a/tests/thread/thread_start1.py b/tests/thread/thread_start1.py
index 94df6dc62..f08ff05a8 100644
--- a/tests/thread/thread_start1.py
+++ b/tests/thread/thread_start1.py
@@ -10,16 +10,19 @@ except ImportError:
     import time
 import _thread
 
+
 def foo():
     pass
 
+
 def thread_entry(n):
     for i in range(n):
         foo()
 
+
 _thread.start_new_thread(thread_entry, (10,))
 _thread.start_new_thread(thread_entry, (20,))
 
 # wait for threads to finish
 time.sleep(1)
-print('done')
+print("done")
diff --git a/tests/thread/thread_start2.py b/tests/thread/thread_start2.py
index 9412bb618..40f8a0522 100644
--- a/tests/thread/thread_start2.py
+++ b/tests/thread/thread_start2.py
@@ -10,11 +10,13 @@ except ImportError:
     import time
 import _thread
 
+
 def thread_entry(a0, a1, a2, a3):
-    print('thread', a0, a1, a2, a3)
+    print("thread", a0, a1, a2, a3)
+
 
 # spawn thread using kw args
-_thread.start_new_thread(thread_entry, (10, 20), {'a2': 0, 'a3': 1})
+_thread.start_new_thread(thread_entry, (10, 20), {"a2": 0, "a3": 1})
 
 # wait for thread to finish
 time.sleep(1)
@@ -23,6 +25,6 @@ time.sleep(1)
 try:
     _thread.start_new_thread(thread_entry, (), ())
 except TypeError:
-    print('TypeError')
+    print("TypeError")
 
-print('done')
+print("done")