drop python 3.6, 3.7

.github/workflows/main.yml

@@ -10,10 +10,7 @@ jobs:
     strategy:
       matrix:
         os: ["ubuntu-20.04", "ubuntu-22.04"]
-        python-version: ["3.6", "3.12"]
-        exclude:
-          - os: "ubuntu-22.04"
-            python-version: "3.6"
+        python-version: ["3.8", "3.12"]
       fail-fast: false
 
     steps:

README.md

@@ -29,11 +29,10 @@ DSQSS implements the path-integral Monte Carlo method with the directed loop alg
 
 - C++ Compiler
 - CMake >=2.8.12
-- Python >=3.6
+- Python >=3.8
   - numpy
   - scipy
   - toml
-  - typing_extensions (if Python < 3.8)
 
 ### Simple build
 

doc/en/dsqss/install.rst

@@ -8,12 +8,11 @@ Requirements
 ********************
 
 - (Optional) MPI (essential for PMWA)
-- python 3.6+
+- python 3.8+
 
    - numpy
    - scipy
    - toml
-   - typing_extensions (if python 3.6 or 3.7 is used)
 
 Download
 ********************

doc/jp/dsqss/install.rst

@@ -9,12 +9,11 @@
 DSQSSの使用には以下のプログラム・ライブラリが必要です. 
 
 - (Optional) MPI (PMWAを使用する場合には必須)
-- python 3.6+
+- python 3.8+
 
    - numpy
    - scipy
    - toml
-   - typing_extensions (Python 3.6, 3.7 の場合)
 
 
 ダウンロード

tool/dsqss/prob_kernel.py

@@ -14,13 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from typing import Sequence
-
-import sys
-if sys.version_info >= (3, 8):
-    from typing import Protocol
-else:
-    from typing_extensions import Protocol
+from typing import Sequence, Protocol
 
 import numpy as np
 

tool/pyproject.toml

@@ -12,12 +12,11 @@ packages = [
   ]
 
 [tool.poetry.dependencies]
-python = "^3.6"
+python = "^3.8"
 # Users should install dependencies by themselves
 # numpy = "^1.17"
 # toml = ">= 0.10.0"
 # scipy = "^1"
-# typing_extension for python<3.8
 
 [tool.poetry.dev-dependencies]