modify python version

Author: ztqakita

extensions/setup.py

@@ -36,7 +36,7 @@
   include_package_data=True,
   install_requires=["jax", "jaxlib", "pybind11>=2.6, <2.8"],
   extras_require={"test": "pytest"},
-  python_requires='>=3.6',
+  python_requires='>=3.7',
   url='https://github.com/PKU-NIP-Lab/BrainPy',
   ext_modules=ext_modules,
   cmdclass={"build_ext": build_ext},

extensions/setup_cuda.py

@@ -92,7 +92,7 @@ def build_extension(self, ext):
   include_package_data=True,
   install_requires=["jax", "jaxlib"],
   extras_require={"test": "pytest"},
-  python_requires='>=3.6',
+  python_requires='>=3.7',
   url='https://github.com/PKU-NIP-Lab/BrainPy',
   ext_modules=[
     Extension("gpu_ops", ['lib/gpu_ops.cc'] + glob.glob("lib/*.cu")),

extensions/setup_mac.py

@@ -37,7 +37,7 @@
   include_package_data=True,
   install_requires=["jax", "jaxlib", "pybind11>=2.6, <2.8"],
   extras_require={"test": "pytest"},
-  python_requires='>=3.6',
+  python_requires='>=3.7',
   url='https://github.com/PKU-NIP-Lab/BrainPy',
   ext_modules=ext_modules,
   cmdclass={"build_ext": build_ext},