fix

layercake/layercake/strutils.py

@@ -1,4 +1,6 @@
 import hashlib
+import random
+import string
 
 
 def first_word(s: str) -> str:
@@ -13,6 +15,11 @@ def truncate_str(s: str, maxlen: int = 30) -> str:
     return s[: maxlen - 3] + '...'
 
 
+def random_str(maxlen: int = 10) -> str:
+    """Returns a random string of letters."""
+    return ''.join(random.choice(string.ascii_letters) for _ in range(maxlen))
+
+
 def md5_hash(s: str) -> str:
     """Computes the MD5 hash of a string."""
     return hashlib.md5(s.encode()).hexdigest()