fix!: drop support for Python 2.7

Release-As: 2.0.0b1

Closes #102

google/cloud/version.py

@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "1.7.0"
+__version__ = "2.0.0b1"

noxfile.py

@@ -80,7 +80,7 @@ def default(session):
     )
 
 
-@nox.session(python=["2.7", "3.6", "3.7", "3.8", "3.9"])
+@nox.session(python=["3.6", "3.7", "3.8", "3.9"])
 def unit(session):
     """Default unit test session."""
     default(session)

setup.py

@@ -28,7 +28,7 @@
 # 'Development Status :: 5 - Production/Stable'
 release_status = "Development Status :: 5 - Production/Stable"
 dependencies = [
-    "google-api-core >= 1.21.0, < 2.0.0dev",
+    "google-api-core >= 1.21.0, < 3.0.0dev",
     "google-auth >= 1.24.0, < 2.0dev",
     # Support six==1.12.0 due to App Engine standard runtime.
     # https://github.com/googleapis/python-cloud-core/issues/45
@@ -76,8 +76,6 @@
         "Intended Audience :: Developers",
         "License :: OSI Approved :: Apache Software License",
         "Programming Language :: Python",
-        "Programming Language :: Python :: 2",
-        "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
@@ -91,7 +89,7 @@
     namespace_packages=namespaces,
     install_requires=dependencies,
     extras_require=extras,
-    python_requires=">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*",
+    python_requires=">=3.6",
     include_package_data=True,
     zip_safe=False,
 )