Merge bitcoin/bitcoin#34154: test: Enable ruff E713 lint

fab300b378 test: Enable ruff E713 lint (MarcoFalke)

Pull request description:

  Membership tests of the form `not item in stuff` may be confusing, because they could be read as `(not item) in stuff`, which is different.

  So enable the ruff E713 lint, which should also help to avoid having to go through review cycles for this.

ACKs for top commit:
  bensig:
    ACK fab300b378
  l0rinc:
    ACK fab300b378
  rkrux:
    lgtm crACK fab300b378

Tree-SHA512: c3eaf0fbe0dd22d8e04b896e98adaf28162fb748e6f7f5ebfd73b2020da66046bf8f0c1a27db5da05250366b98ded8c4a55d53edd8fa050e80521aee42ba3c5a

test/functional/test_framework/descriptors.py

@@ -25,7 +25,7 @@ def descsum_expand(s):
     groups = []
     symbols = []
     for c in s:
-        if not c in INPUT_CHARSET:
+        if c not in INPUT_CHARSET:
             return None
         v = INPUT_CHARSET.find(c)
         symbols.append(v & 31)
@@ -47,7 +47,7 @@ def descsum_create(s):
 
 def descsum_check(s, require=True):
     """Verify that the checksum is correct in a descriptor"""
-    if not '#' in s:
+    if '#' not in s:
         return not require
     if s[-9] != '#':
         return False