Adds a __repr__ to graph.

[pyutils.git] / src / pyutils / id_generator.py

diff --git a/src/pyutils/id_generator.py b/src/pyutils/id_generator.py
index 4b61a93081d6dd17ab341330e7d4f08991ad4aab..7d2e151addc17399efbea6bc6196d598c7bb6543 100644 (file)
--- a/src/pyutils/id_generator.py
+++ b/src/pyutils/id_generator.py
@@ -1,10 +1,15 @@
 #!/usr/bin/env python3
 
-# © Copyright 2021-2022, Scott Gasch
+# © Copyright 2021-2023, Scott Gasch
 
-"""A helper class for generating thread safe monotonically increasing
+"""
+A helper class for generating thread safe monotonically increasing
 id numbers.
 
+.. note::
+
+    This code is thread safe but not process safe; for use only
+    within one python process.
 """
 
 import itertools
@@ -17,11 +22,19 @@ logger = logging.getLogger(__name__)
 generators = {}
 
 
-def get(name: str, *, start=0) -> int:
+def get(name: str, *, start: int = 0) -> int:
     """
     Returns a thread-safe, monotonically increasing id suitable for use
     as a globally unique identifier.
 
+    Args:
+        name: the sequence identifier name.
+        start: the starting id (i.e. the first id that should be returned)
+
+    Returns:
+        An integer id such that within one sequence identifier name the
+        id returned is unique and is the maximum id ever returned.
+
     >>> import id_generator
     >>> id_generator.get('student_id')
     0
@@ -35,11 +48,11 @@ def get(name: str, *, start=0) -> int:
     if name not in generators:
         generators[name] = itertools.count(start, 1)
     x = next(generators[name])
-    logger.debug("Generated next id %d", x)
+    logger.debug("Generated next id %d in sequence %s", x, name)
     return x
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     import doctest
 
     doctest.testmod()