From 179f8b963c6fb305371ee1f0068a33ab394fffec Mon Sep 17 00:00:00 2001
From: Rooke Poole <rookpool97@gmail.com>
Date: Tue, 18 Aug 2026 16:08:26 -0500
Subject: [PATCH 1/8] curriculum: add actionable assertion messages to datetime
 checks (batch 2 of 2)

Closes #104

[PARS-IDEMPOTENCY:branch:7735232b443ec6e523b9af3ea9de856b934a6d8aaf9d2db0b795306bc02b6e0b]
---
 checks/datetime/datetime7.py | 2 +-
 checks/datetime/datetime8.py | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/checks/datetime/datetime7.py b/checks/datetime/datetime7.py
index 7ec69ca..a1fe20f 100644
--- a/checks/datetime/datetime7.py
+++ b/checks/datetime/datetime7.py
@@ -1,2 +1,2 @@
-assert appointment.isoformat() == "2026-05-23T14:45:00"
+assert appointment.isoformat() == "2026-05-23T14:45:00", f"Expected appointment ISO format '2026-05-23T14:45:00', got '{appointment.isoformat()}'"
 print("datetime7 ok")
diff --git a/checks/datetime/datetime8.py b/checks/datetime/datetime8.py
index 450d6f6..e155cee 100644
--- a/checks/datetime/datetime8.py
+++ b/checks/datetime/datetime8.py
@@ -1,5 +1,5 @@
 from datetime import date
 
-assert earliest == date(2024, 1, 1)
-assert latest == date(2026, 5, 23)
+assert earliest == date(2024, 1, 1), f"Expected earliest date to be date(2024, 1, 1), got {earliest!r}"
+assert latest == date(2026, 5, 23), f"Expected latest date to be date(2026, 5, 23), got {latest!r}"
 print("datetime8 ok")

From 04db8a0f333caef58eedb5aefa6099b5f56de879 Mon Sep 17 00:00:00 2001
From: Rooke Poole <rookpool97@gmail.com>
Date: Tue, 18 Aug 2026 16:09:17 -0500
Subject: [PATCH 2/8] curriculum: add actionable assertion messages to JSON
 checks (batch 2 of 2)

Closes #102

[PARS-IDEMPOTENCY:branch:7f65ba09176b067305d7fa4defb410b28896d4eb6300b3c02de739e3946ba397]
---
 checks/json/json7.py | 4 ++--
 checks/json/json8.py | 6 +++---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/checks/json/json7.py b/checks/json/json7.py
index 50ee648..7b2fe66 100644
--- a/checks/json/json7.py
+++ b/checks/json/json7.py
@@ -1,3 +1,3 @@
-assert settings["theme"] == "dark"
-assert encoded == '{"font_size": 12, "theme": "dark"}'
+assert settings["theme"] == "dark", f"Expected settings['theme'] to be 'dark', got {settings.get('theme')!r}"
+assert encoded == '{"font_size": 12, "theme": "dark"}', f"Expected encoded JSON string '{{\"font_size\": 12, \"theme\": \"dark\"}}', got {encoded!r}"
 print("json7 ok")
diff --git a/checks/json/json8.py b/checks/json/json8.py
index 3658462..94aa3bd 100644
--- a/checks/json/json8.py
+++ b/checks/json/json8.py
@@ -1,4 +1,4 @@
-assert decoded == original
-assert tag_count == 2
-assert level == 3
+assert decoded == original, f"Expected decoded dict to equal original {original!r}, got {decoded!r}"
+assert tag_count == 2, f"Expected tag_count to be 2, got {tag_count!r}"
+assert level == 3, f"Expected level to be 3, got {level!r}"
 print("json8 ok")

From d5f9c7f914ef2325ffe0c44b1bce2dd516512420 Mon Sep 17 00:00:00 2001
From: Rooke Poole <rookpool97@gmail.com>
Date: Tue, 18 Aug 2026 16:09:39 -0500
Subject: [PATCH 3/8] curriculum: add actionable assertion message to
 context_managers8 check

Fixes #92.

[PARS-IDEMPOTENCY:branch:65833aa35d04461bf43dbbcf606978aa4c997e2594506d9edacbf22573fc23b6]
---
 checks/context_managers/context_managers8.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/checks/context_managers/context_managers8.py b/checks/context_managers/context_managers8.py
index e3ca7c0..9a9b776 100644
--- a/checks/context_managers/context_managers8.py
+++ b/checks/context_managers/context_managers8.py
@@ -8,7 +8,7 @@
 with ManagedPool(r) as res2:
     pass
 
-assert r.acquired is False
+assert r.acquired is False, "resource should be released after the second with-block"
 assert r.release_log == ["released", "released"], (
     f"release_log should have two entries after two uses, got {r.release_log!r}"
 )

From 11709e14d76e98d2de65abd064c8d3d53752ddbe Mon Sep 17 00:00:00 2001
From: Rooke Poole <rookpool97@gmail.com>
Date: Tue, 18 Aug 2026 16:10:21 -0500
Subject: [PATCH 4/8] curriculum: add actionable assertion messages to
 decorators checks (#89)

Add actionable failure messages to bare assertions in checks/decorators/decorators10.py.

[PARS-IDEMPOTENCY:branch:f2757544184cfee134c4c6eecb999a15a2f1de562f1675ac94c3209f61694e28]
---
 checks/decorators/decorators10.py | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/checks/decorators/decorators10.py b/checks/decorators/decorators10.py
index 7776f7c..47c3ed9 100644
--- a/checks/decorators/decorators10.py
+++ b/checks/decorators/decorators10.py
@@ -1,12 +1,18 @@
-assert slow_square(4) == 16
-assert slow_square(5) == 25
+assert slow_square(4) == 16, f"slow_square(4) should return 16, got {slow_square(4)}"
+assert slow_square(5) == 25, f"slow_square(5) should return 25, got {slow_square(5)}"
 # Second calls must hit the cache, not recompute
-assert slow_square(4) == 16
-assert slow_square(5) == 25
+assert (
+    slow_square(4) == 16
+), f"cached slow_square(4) call should return 16, got {slow_square(4)}"
+assert (
+    slow_square(5) == 25
+), f"cached slow_square(5) call should return 25, got {slow_square(5)}"
 assert call_count == 2, (
     f"slow_square should have been called exactly 2 times (once per unique arg), "
     f"but call_count is {call_count}"
 )
 assert (4,) in slow_square.cache, "cache should contain key (4,) for arg 4"
-assert slow_square.cache[(4,)] == 16
+assert (
+    slow_square.cache[(4,)] == 16
+), f"slow_square.cache[(4,)] should be 16, got {slow_square.cache[(4,)]}"
 print("decorators10 ✓")

From 5cc70b838f191720d5bfaa873d45239b2b7cedc6 Mon Sep 17 00:00:00 2001
From: Rooke Poole <rookpool97@gmail.com>
Date: Tue, 18 Aug 2026 16:16:02 -0500
Subject: [PATCH 5/8] curriculum: add actionable assertion messages to
 functions checks (batch 1 of 3)

[PARS-IDEMPOTENCY:branch:b32214a80a92b01ba79ae2495ddce725363ed25f806e0a58980401b6f38656d0]
---
 checks/functions/functions1.py | 16 ++++++++--------
 checks/functions/functions2.py |  4 ++--
 checks/functions/functions3.py |  8 ++++----
 3 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/checks/functions/functions1.py b/checks/functions/functions1.py
index dca8cd3..588d121 100644
--- a/checks/functions/functions1.py
+++ b/checks/functions/functions1.py
@@ -1,9 +1,9 @@
-assert average(2, 4) == 3
-assert average(10, 20) == 15
-assert average(-2, -4) == -3
-assert average(-10, -20) == -15
-assert average(1.5, 2.5) == 2
-assert average(0.5, 1.5) == 1
-assert average(0, 0) == 0
-assert average(3, 4.5) == 3.75
+assert average(2, 4) == 3, f"average(2, 4) should return 3, got {average(2, 4)!r}"
+assert average(10, 20) == 15, f"average(10, 20) should return 15, got {average(10, 20)!r}"
+assert average(-2, -4) == -3, f"average(-2, -4) should return -3, got {average(-2, -4)!r}"
+assert average(-10, -20) == -15, f"average(-10, -20) should return -15, got {average(-10, -20)!r}"
+assert average(1.5, 2.5) == 2, f"average(1.5, 2.5) should return 2, got {average(1.5, 2.5)!r}"
+assert average(0.5, 1.5) == 1, f"average(0.5, 1.5) should return 1, got {average(0.5, 1.5)!r}"
+assert average(0, 0) == 0, f"average(0, 0) should return 0, got {average(0, 0)!r}"
+assert average(3, 4.5) == 3.75, f"average(3, 4.5) should return 3.75, got {average(3, 4.5)!r}"
 print("functions1 ✓")
diff --git a/checks/functions/functions2.py b/checks/functions/functions2.py
index eb89916..fa401ff 100644
--- a/checks/functions/functions2.py
+++ b/checks/functions/functions2.py
@@ -1,4 +1,4 @@
 assert callable(greet), "greet should be a function"
-assert greet() == "hello"
-assert message == "hello"
+assert greet() == "hello", f"greet() should return 'hello', got {greet()!r}"
+assert message == "hello", f"message should be 'hello', got {message!r}"
 print("functions2 ✓")
diff --git a/checks/functions/functions3.py b/checks/functions/functions3.py
index 03a5f96..420dd48 100644
--- a/checks/functions/functions3.py
+++ b/checks/functions/functions3.py
@@ -1,6 +1,6 @@
 assert callable(double), "double should be a function"
-assert double(3) == 6
-assert double(0) == 0
-assert double(-5) == -10
-assert double(2.5) == 5.0
+assert double(3) == 6, f"double(3) should return 6, got {double(3)!r}"
+assert double(0) == 0, f"double(0) should return 0, got {double(0)!r}"
+assert double(-5) == -10, f"double(-5) should return -10, got {double(-5)!r}"
+assert double(2.5) == 5.0, f"double(2.5) should return 5.0, got {double(2.5)!r}"
 print("functions3 ✓")

From cb98da15a26b5acf3f7b219893f30c77b74238c1 Mon Sep 17 00:00:00 2001
From: Rooke Poole <rookpool97@gmail.com>
Date: Tue, 18 Aug 2026 16:20:18 -0500
Subject: [PATCH 6/8] curriculum: add actionable assertion messages to
 recursion checks (batch 2)

Add expected and actual value messages to assertions in checks/recursion/recursion4.py and checks/recursion/recursion5.py.

[PARS-IDEMPOTENCY:branch:0f123dc840816bab433fb165c53babb92a49398c3889ccb361820e25f16d3e89]
---
 checks/recursion/recursion4.py | 10 +++++-----
 checks/recursion/recursion5.py | 12 ++++++------
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/checks/recursion/recursion4.py b/checks/recursion/recursion4.py
index f3eeaff..94d56f3 100644
--- a/checks/recursion/recursion4.py
+++ b/checks/recursion/recursion4.py
@@ -1,6 +1,6 @@
-assert count_items([]) == 0
-assert count_items([42]) == 1
-assert count_items([1, 2, 3]) == 3
-assert count_items(["a", "b", "c", "d"]) == 4
-assert count_items(list(range(10))) == 10
+assert count_items([]) == 0, f"count_items([]) should return 0, got {count_items([])!r}"
+assert count_items([42]) == 1, f"count_items([42]) should return 1, got {count_items([42])!r}"
+assert count_items([1, 2, 3]) == 3, f"count_items([1, 2, 3]) should return 3, got {count_items([1, 2, 3])!r}"
+assert count_items(["a", "b", "c", "d"]) == 4, f'count_items(["a", "b", "c", "d"]) should return 4, got {count_items(["a", "b", "c", "d"])!r}'
+assert count_items(list(range(10))) == 10, f"count_items(list(range(10))) should return 10, got {count_items(list(range(10)))!r}"
 print("recursion4 ✓")
diff --git a/checks/recursion/recursion5.py b/checks/recursion/recursion5.py
index 7b419b8..4893090 100644
--- a/checks/recursion/recursion5.py
+++ b/checks/recursion/recursion5.py
@@ -1,7 +1,7 @@
-assert fibonacci(0) == 0
-assert fibonacci(1) == 1
-assert fibonacci(2) == 1
-assert fibonacci(5) == 5
-assert fibonacci(7) == 13
-assert fibonacci(10) == 55
+assert fibonacci(0) == 0, f"fibonacci(0) should return 0, got {fibonacci(0)!r}"
+assert fibonacci(1) == 1, f"fibonacci(1) should return 1, got {fibonacci(1)!r}"
+assert fibonacci(2) == 1, f"fibonacci(2) should return 1, got {fibonacci(2)!r}"
+assert fibonacci(5) == 5, f"fibonacci(5) should return 5, got {fibonacci(5)!r}"
+assert fibonacci(7) == 13, f"fibonacci(7) should return 13, got {fibonacci(7)!r}"
+assert fibonacci(10) == 55, f"fibonacci(10) should return 55, got {fibonacci(10)!r}"
 print("recursion5 ✓")

From e46bebfdc95867b53daf32b3d80ddbe314b0e2d7 Mon Sep 17 00:00:00 2001
From: Rooke Poole <rookpool97@gmail.com>
Date: Tue, 18 Aug 2026 16:21:56 -0500
Subject: [PATCH 7/8] curriculum: add actionable assertion messages to
 recursion checks (batch 1 of 4)

Add explicit failure messages to all bare assertions in recursion1, recursion2, and recursion3 checks.

[PARS-IDEMPOTENCY:branch:d04b46bb498f2b8b8970b9dc7a110fd9427ee0d2504df96dd15f8363d4322ef5]
---
 checks/recursion/recursion1.py |  8 ++++----
 checks/recursion/recursion2.py |  8 ++++----
 checks/recursion/recursion3.py | 10 +++++-----
 3 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/checks/recursion/recursion1.py b/checks/recursion/recursion1.py
index 760dfa6..35840a0 100644
--- a/checks/recursion/recursion1.py
+++ b/checks/recursion/recursion1.py
@@ -1,5 +1,5 @@
-assert countdown(0) == [0]
-assert countdown(1) == [1, 0]
-assert countdown(3) == [3, 2, 1, 0]
-assert countdown(5) == [5, 4, 3, 2, 1, 0]
+assert countdown(0) == [0], f"countdown(0) should return [0], got {countdown(0)!r}"
+assert countdown(1) == [1, 0], f"countdown(1) should return [1, 0], got {countdown(1)!r}"
+assert countdown(3) == [3, 2, 1, 0], f"countdown(3) should return [3, 2, 1, 0], got {countdown(3)!r}"
+assert countdown(5) == [5, 4, 3, 2, 1, 0], f"countdown(5) should return [5, 4, 3, 2, 1, 0], got {countdown(5)!r}"
 print("recursion1 ✓")
diff --git a/checks/recursion/recursion2.py b/checks/recursion/recursion2.py
index 6affe8f..4487b89 100644
--- a/checks/recursion/recursion2.py
+++ b/checks/recursion/recursion2.py
@@ -1,5 +1,5 @@
-assert factorial(0) == 1
-assert factorial(1) == 1
-assert factorial(5) == 120
-assert factorial(6) == 720
+assert factorial(0) == 1, f"factorial(0) should be 1, got {factorial(0)!r}"
+assert factorial(1) == 1, f"factorial(1) should be 1, got {factorial(1)!r}"
+assert factorial(5) == 120, f"factorial(5) should be 120, got {factorial(5)!r}"
+assert factorial(6) == 720, f"factorial(6) should be 720, got {factorial(6)!r}"
 print("recursion2 ✓")
diff --git a/checks/recursion/recursion3.py b/checks/recursion/recursion3.py
index 01081d6..ba01970 100644
--- a/checks/recursion/recursion3.py
+++ b/checks/recursion/recursion3.py
@@ -1,6 +1,6 @@
-assert recursive_sum([]) == 0
-assert recursive_sum([5]) == 5
-assert recursive_sum([1, 2, 3]) == 6
-assert recursive_sum([10, 20, 30, 40]) == 100
-assert recursive_sum([-1, -2, 3]) == 0
+assert recursive_sum([]) == 0, f"recursive_sum([]) should be 0, got {recursive_sum([])!r}"
+assert recursive_sum([5]) == 5, f"recursive_sum([5]) should be 5, got {recursive_sum([5])!r}"
+assert recursive_sum([1, 2, 3]) == 6, f"recursive_sum([1, 2, 3]) should be 6, got {recursive_sum([1, 2, 3])!r}"
+assert recursive_sum([10, 20, 30, 40]) == 100, f"recursive_sum([10, 20, 30, 40]) should be 100, got {recursive_sum([10, 20, 30, 40])!r}"
+assert recursive_sum([-1, -2, 3]) == 0, f"recursive_sum([-1, -2, 3]) should be 0, got {recursive_sum([-1, -2, 3])!r}"
 print("recursion3 ✓")

From 8f30a3b24458f23acafb990450fceeec3c08fbc4 Mon Sep 17 00:00:00 2001
From: Abhik Sarkar <abhiksark@gmail.com>
Date: Wed, 19 Aug 2026 17:53:38 +0530
Subject: [PATCH 8/8] fix(curriculum): keep assertion messages side-effect free

---
 checks/context_managers/context_managers8.py |  1 +
 checks/datetime/datetime7.py                 |  5 ++++-
 checks/datetime/datetime8.py                 |  1 +
 checks/decorators/decorators10.py            |  9 +++++----
 checks/functions/functions1.py               | 17 +++++++++--------
 checks/functions/functions2.py               |  3 ++-
 checks/functions/functions3.py               |  9 +++++----
 checks/json/json7.py                         |  1 +
 checks/json/json8.py                         |  1 +
 checks/recursion/recursion1.py               | 11 +++++++----
 checks/recursion/recursion2.py               |  9 +++++----
 checks/recursion/recursion3.py               | 13 ++++++++-----
 checks/recursion/recursion4.py               | 15 ++++++++++-----
 checks/recursion/recursion5.py               | 13 +++++++------
 14 files changed, 66 insertions(+), 42 deletions(-)

diff --git a/checks/context_managers/context_managers8.py b/checks/context_managers/context_managers8.py
index 9a9b776..b3ee242 100644
--- a/checks/context_managers/context_managers8.py
+++ b/checks/context_managers/context_managers8.py
@@ -1,3 +1,4 @@
+# checks/context_managers/context_managers8.py
 assert in_block_acquired is True, "resource should be acquired inside the with-block"
 assert r.acquired is False, "resource should be released after the with-block"
 assert r.release_log == ["released"], (
diff --git a/checks/datetime/datetime7.py b/checks/datetime/datetime7.py
index a1fe20f..98c8d6b 100644
--- a/checks/datetime/datetime7.py
+++ b/checks/datetime/datetime7.py
@@ -1,2 +1,5 @@
-assert appointment.isoformat() == "2026-05-23T14:45:00", f"Expected appointment ISO format '2026-05-23T14:45:00', got '{appointment.isoformat()}'"
+# checks/datetime/datetime7.py
+assert appointment.isoformat() == "2026-05-23T14:45:00", (
+    "appointment should use ISO format '2026-05-23T14:45:00'"
+)
 print("datetime7 ok")
diff --git a/checks/datetime/datetime8.py b/checks/datetime/datetime8.py
index e155cee..35b221b 100644
--- a/checks/datetime/datetime8.py
+++ b/checks/datetime/datetime8.py
@@ -1,3 +1,4 @@
+# checks/datetime/datetime8.py
 from datetime import date
 
 assert earliest == date(2024, 1, 1), f"Expected earliest date to be date(2024, 1, 1), got {earliest!r}"
diff --git a/checks/decorators/decorators10.py b/checks/decorators/decorators10.py
index 47c3ed9..1fb7410 100644
--- a/checks/decorators/decorators10.py
+++ b/checks/decorators/decorators10.py
@@ -1,12 +1,13 @@
-assert slow_square(4) == 16, f"slow_square(4) should return 16, got {slow_square(4)}"
-assert slow_square(5) == 25, f"slow_square(5) should return 25, got {slow_square(5)}"
+# checks/decorators/decorators10.py
+assert slow_square(4) == 16, "slow_square(4) should return 16"
+assert slow_square(5) == 25, "slow_square(5) should return 25"
 # Second calls must hit the cache, not recompute
 assert (
     slow_square(4) == 16
-), f"cached slow_square(4) call should return 16, got {slow_square(4)}"
+), "cached slow_square(4) call should return 16"
 assert (
     slow_square(5) == 25
-), f"cached slow_square(5) call should return 25, got {slow_square(5)}"
+), "cached slow_square(5) call should return 25"
 assert call_count == 2, (
     f"slow_square should have been called exactly 2 times (once per unique arg), "
     f"but call_count is {call_count}"
diff --git a/checks/functions/functions1.py b/checks/functions/functions1.py
index 588d121..b3b65ef 100644
--- a/checks/functions/functions1.py
+++ b/checks/functions/functions1.py
@@ -1,9 +1,10 @@
-assert average(2, 4) == 3, f"average(2, 4) should return 3, got {average(2, 4)!r}"
-assert average(10, 20) == 15, f"average(10, 20) should return 15, got {average(10, 20)!r}"
-assert average(-2, -4) == -3, f"average(-2, -4) should return -3, got {average(-2, -4)!r}"
-assert average(-10, -20) == -15, f"average(-10, -20) should return -15, got {average(-10, -20)!r}"
-assert average(1.5, 2.5) == 2, f"average(1.5, 2.5) should return 2, got {average(1.5, 2.5)!r}"
-assert average(0.5, 1.5) == 1, f"average(0.5, 1.5) should return 1, got {average(0.5, 1.5)!r}"
-assert average(0, 0) == 0, f"average(0, 0) should return 0, got {average(0, 0)!r}"
-assert average(3, 4.5) == 3.75, f"average(3, 4.5) should return 3.75, got {average(3, 4.5)!r}"
+# checks/functions/functions1.py
+assert average(2, 4) == 3, "average(2, 4) should return 3"
+assert average(10, 20) == 15, "average(10, 20) should return 15"
+assert average(-2, -4) == -3, "average(-2, -4) should return -3"
+assert average(-10, -20) == -15, "average(-10, -20) should return -15"
+assert average(1.5, 2.5) == 2, "average(1.5, 2.5) should return 2"
+assert average(0.5, 1.5) == 1, "average(0.5, 1.5) should return 1"
+assert average(0, 0) == 0, "average(0, 0) should return 0"
+assert average(3, 4.5) == 3.75, "average(3, 4.5) should return 3.75"
 print("functions1 ✓")
diff --git a/checks/functions/functions2.py b/checks/functions/functions2.py
index fa401ff..011976d 100644
--- a/checks/functions/functions2.py
+++ b/checks/functions/functions2.py
@@ -1,4 +1,5 @@
+# checks/functions/functions2.py
 assert callable(greet), "greet should be a function"
-assert greet() == "hello", f"greet() should return 'hello', got {greet()!r}"
+assert greet() == "hello", "greet() should return 'hello'"
 assert message == "hello", f"message should be 'hello', got {message!r}"
 print("functions2 ✓")
diff --git a/checks/functions/functions3.py b/checks/functions/functions3.py
index 420dd48..f4c301a 100644
--- a/checks/functions/functions3.py
+++ b/checks/functions/functions3.py
@@ -1,6 +1,7 @@
+# checks/functions/functions3.py
 assert callable(double), "double should be a function"
-assert double(3) == 6, f"double(3) should return 6, got {double(3)!r}"
-assert double(0) == 0, f"double(0) should return 0, got {double(0)!r}"
-assert double(-5) == -10, f"double(-5) should return -10, got {double(-5)!r}"
-assert double(2.5) == 5.0, f"double(2.5) should return 5.0, got {double(2.5)!r}"
+assert double(3) == 6, "double(3) should return 6"
+assert double(0) == 0, "double(0) should return 0"
+assert double(-5) == -10, "double(-5) should return -10"
+assert double(2.5) == 5.0, "double(2.5) should return 5.0"
 print("functions3 ✓")
diff --git a/checks/json/json7.py b/checks/json/json7.py
index 7b2fe66..a2ef3c2 100644
--- a/checks/json/json7.py
+++ b/checks/json/json7.py
@@ -1,3 +1,4 @@
+# checks/json/json7.py
 assert settings["theme"] == "dark", f"Expected settings['theme'] to be 'dark', got {settings.get('theme')!r}"
 assert encoded == '{"font_size": 12, "theme": "dark"}', f"Expected encoded JSON string '{{\"font_size\": 12, \"theme\": \"dark\"}}', got {encoded!r}"
 print("json7 ok")
diff --git a/checks/json/json8.py b/checks/json/json8.py
index 94aa3bd..5fc2129 100644
--- a/checks/json/json8.py
+++ b/checks/json/json8.py
@@ -1,3 +1,4 @@
+# checks/json/json8.py
 assert decoded == original, f"Expected decoded dict to equal original {original!r}, got {decoded!r}"
 assert tag_count == 2, f"Expected tag_count to be 2, got {tag_count!r}"
 assert level == 3, f"Expected level to be 3, got {level!r}"
diff --git a/checks/recursion/recursion1.py b/checks/recursion/recursion1.py
index 35840a0..49c8a4f 100644
--- a/checks/recursion/recursion1.py
+++ b/checks/recursion/recursion1.py
@@ -1,5 +1,8 @@
-assert countdown(0) == [0], f"countdown(0) should return [0], got {countdown(0)!r}"
-assert countdown(1) == [1, 0], f"countdown(1) should return [1, 0], got {countdown(1)!r}"
-assert countdown(3) == [3, 2, 1, 0], f"countdown(3) should return [3, 2, 1, 0], got {countdown(3)!r}"
-assert countdown(5) == [5, 4, 3, 2, 1, 0], f"countdown(5) should return [5, 4, 3, 2, 1, 0], got {countdown(5)!r}"
+# checks/recursion/recursion1.py
+assert countdown(0) == [0], "countdown(0) should return [0]"
+assert countdown(1) == [1, 0], "countdown(1) should return [1, 0]"
+assert countdown(3) == [3, 2, 1, 0], "countdown(3) should return [3, 2, 1, 0]"
+assert countdown(5) == [5, 4, 3, 2, 1, 0], (
+    "countdown(5) should return [5, 4, 3, 2, 1, 0]"
+)
 print("recursion1 ✓")
diff --git a/checks/recursion/recursion2.py b/checks/recursion/recursion2.py
index 4487b89..386bc34 100644
--- a/checks/recursion/recursion2.py
+++ b/checks/recursion/recursion2.py
@@ -1,5 +1,6 @@
-assert factorial(0) == 1, f"factorial(0) should be 1, got {factorial(0)!r}"
-assert factorial(1) == 1, f"factorial(1) should be 1, got {factorial(1)!r}"
-assert factorial(5) == 120, f"factorial(5) should be 120, got {factorial(5)!r}"
-assert factorial(6) == 720, f"factorial(6) should be 720, got {factorial(6)!r}"
+# checks/recursion/recursion2.py
+assert factorial(0) == 1, "factorial(0) should be 1"
+assert factorial(1) == 1, "factorial(1) should be 1"
+assert factorial(5) == 120, "factorial(5) should be 120"
+assert factorial(6) == 720, "factorial(6) should be 720"
 print("recursion2 ✓")
diff --git a/checks/recursion/recursion3.py b/checks/recursion/recursion3.py
index ba01970..1288d7c 100644
--- a/checks/recursion/recursion3.py
+++ b/checks/recursion/recursion3.py
@@ -1,6 +1,9 @@
-assert recursive_sum([]) == 0, f"recursive_sum([]) should be 0, got {recursive_sum([])!r}"
-assert recursive_sum([5]) == 5, f"recursive_sum([5]) should be 5, got {recursive_sum([5])!r}"
-assert recursive_sum([1, 2, 3]) == 6, f"recursive_sum([1, 2, 3]) should be 6, got {recursive_sum([1, 2, 3])!r}"
-assert recursive_sum([10, 20, 30, 40]) == 100, f"recursive_sum([10, 20, 30, 40]) should be 100, got {recursive_sum([10, 20, 30, 40])!r}"
-assert recursive_sum([-1, -2, 3]) == 0, f"recursive_sum([-1, -2, 3]) should be 0, got {recursive_sum([-1, -2, 3])!r}"
+# checks/recursion/recursion3.py
+assert recursive_sum([]) == 0, "recursive_sum([]) should be 0"
+assert recursive_sum([5]) == 5, "recursive_sum([5]) should be 5"
+assert recursive_sum([1, 2, 3]) == 6, "recursive_sum([1, 2, 3]) should be 6"
+assert recursive_sum([10, 20, 30, 40]) == 100, (
+    "recursive_sum([10, 20, 30, 40]) should be 100"
+)
+assert recursive_sum([-1, -2, 3]) == 0, "recursive_sum([-1, -2, 3]) should be 0"
 print("recursion3 ✓")
diff --git a/checks/recursion/recursion4.py b/checks/recursion/recursion4.py
index 94d56f3..18885da 100644
--- a/checks/recursion/recursion4.py
+++ b/checks/recursion/recursion4.py
@@ -1,6 +1,11 @@
-assert count_items([]) == 0, f"count_items([]) should return 0, got {count_items([])!r}"
-assert count_items([42]) == 1, f"count_items([42]) should return 1, got {count_items([42])!r}"
-assert count_items([1, 2, 3]) == 3, f"count_items([1, 2, 3]) should return 3, got {count_items([1, 2, 3])!r}"
-assert count_items(["a", "b", "c", "d"]) == 4, f'count_items(["a", "b", "c", "d"]) should return 4, got {count_items(["a", "b", "c", "d"])!r}'
-assert count_items(list(range(10))) == 10, f"count_items(list(range(10))) should return 10, got {count_items(list(range(10)))!r}"
+# checks/recursion/recursion4.py
+assert count_items([]) == 0, "count_items([]) should return 0"
+assert count_items([42]) == 1, "count_items([42]) should return 1"
+assert count_items([1, 2, 3]) == 3, "count_items([1, 2, 3]) should return 3"
+assert count_items(["a", "b", "c", "d"]) == 4, (
+    'count_items(["a", "b", "c", "d"]) should return 4'
+)
+assert count_items(list(range(10))) == 10, (
+    "count_items(list(range(10))) should return 10"
+)
 print("recursion4 ✓")
diff --git a/checks/recursion/recursion5.py b/checks/recursion/recursion5.py
index 4893090..1d25edd 100644
--- a/checks/recursion/recursion5.py
+++ b/checks/recursion/recursion5.py
@@ -1,7 +1,8 @@
-assert fibonacci(0) == 0, f"fibonacci(0) should return 0, got {fibonacci(0)!r}"
-assert fibonacci(1) == 1, f"fibonacci(1) should return 1, got {fibonacci(1)!r}"
-assert fibonacci(2) == 1, f"fibonacci(2) should return 1, got {fibonacci(2)!r}"
-assert fibonacci(5) == 5, f"fibonacci(5) should return 5, got {fibonacci(5)!r}"
-assert fibonacci(7) == 13, f"fibonacci(7) should return 13, got {fibonacci(7)!r}"
-assert fibonacci(10) == 55, f"fibonacci(10) should return 55, got {fibonacci(10)!r}"
+# checks/recursion/recursion5.py
+assert fibonacci(0) == 0, "fibonacci(0) should return 0"
+assert fibonacci(1) == 1, "fibonacci(1) should return 1"
+assert fibonacci(2) == 1, "fibonacci(2) should return 1"
+assert fibonacci(5) == 5, "fibonacci(5) should return 5"
+assert fibonacci(7) == 13, "fibonacci(7) should return 13"
+assert fibonacci(10) == 55, "fibonacci(10) should return 55"
 print("recursion5 ✓")