Remove python 3.8 from pyproject and README (#450)

Signed-off-by: Rob Ambalu <robert.ambalu@point72.com>

Author: robambalu

README.md

@@ -10,7 +10,7 @@
 [![PyPI](https://img.shields.io/pypi/v/csp.svg?style=flat)](https://pypi.python.org/pypi/csp)
 [![License](https://img.shields.io/badge/license-Apache--2.0-green)](https://github.com/Point72/csp/LICENSE)
 [![Build Status](https://github.com/Point72/csp/actions/workflows/build.yml/badge.svg)](https://github.com/Point72/csp/actions/workflows/build.yml)
-[![Python Versions](https://img.shields.io/badge/python-3.8_%7C_3.9_%7C_3.10_%7C_3.11_%7C_3.12-blue)](https://github.com/Point72/csp/blob/main/pyproject.toml)
+[![Python Versions](https://img.shields.io/badge/python-3.9_%7C_3.10_%7C_3.11_%7C_3.12-blue)](https://github.com/Point72/csp/blob/main/pyproject.toml)
 
 <br/>
 

csp/impl/wiring/runtime.py

@@ -38,9 +38,11 @@ def build_graph(f, *args, starttime=None, endtime=None, realtime=False, **kwargs
     ), "Start time and end time should either both be specified or none of them should be specified when building a graph"
     if starttime:
         starttime, endtime = _normalize_run_times(starttime, endtime, realtime)
-    with ExceptionContext(), GraphRunInfo(starttime=starttime, endtime=endtime, realtime=realtime), Context(
-        start_time=starttime, end_time=endtime
-    ) as c:
+    with (
+        ExceptionContext(),
+        GraphRunInfo(starttime=starttime, endtime=endtime, realtime=realtime),
+        Context(start_time=starttime, end_time=endtime) as c,
+    ):
         # Setup the profiler if within a profiling context
         if Profiler.instance() is not None and not Profiler.instance().initialized:
             Profiler.instance().init_profiler()

csp/tests/test_baselib.py

@@ -1128,9 +1128,11 @@ def graph():
             csp.log(logging.CRITICAL, "z", z, logging.getLogger("logger3"))
             csp.add_graph_output("x", x)
 
-        with self.assertLogs("logger1", level="CRITICAL") as cm1, self.assertLogs(
-            "logger2", level="CRITICAL"
-        ) as cm2, self.assertLogs("logger3", level="CRITICAL") as cm3:
+        with (
+            self.assertLogs("logger1", level="CRITICAL") as cm1,
+            self.assertLogs("logger2", level="CRITICAL") as cm2,
+            self.assertLogs("logger3", level="CRITICAL") as cm3,
+        ):
             csp.run(graph, starttime=st, endtime=timedelta(seconds=60))
 
         exp_out_log1 = [

pyproject.toml

@@ -17,10 +17,9 @@ authors = [{name = "the csp authors", email = "CSPOpenSource@point72.com"}]
 description="csp is a high performance reactive stream processing library, written in C++ and Python"
 readme = "README.md"
 version = "0.0.8"
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 
 dependencies = [
-    "backports.zoneinfo; python_version<'3.9'",
     "deprecated",
     "numpy<2",
     "packaging",
@@ -38,7 +37,6 @@ classifiers = [
     "Programming Language :: Python :: Implementation :: CPython",
     "Programming Language :: Python :: Implementation :: PyPy",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
@@ -149,7 +147,7 @@ replace = 'project(csp VERSION "{new_version}")'
 ignore = []
 
 [tool.cibuildwheel]
-build = "cp38-* cp39-* cp310-* cp311-* cp312-*"
+build = "cp39-* cp310-* cp311-* cp312-*"
 test-command = "echo 'TODO'"
 test-requires = [
     "pytest",