chore: drop py3.7 (#4770)

.github/workflows/test.yml

@@ -25,7 +25,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-latest, macOS-latest, windows-latest ]
-        python-version: [ "3.7", "3.8", "3.9","3.10" ]
+        python-version: [ "3.8", "3.9","3.10" ]
     name: Test Python ${{ matrix.python-version }} ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v2

news/refactor-drop-py37.rst

@@ -0,0 +1,23 @@
+**Added:**
+
+* <news item>
+
+**Changed:**
+
+* <news item>
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* Removed Python 3.7 support following `NEP0029 <https://numpy.org/neps/nep-0029-deprecation_policy.html>`_
+
+**Fixed:**
+
+* <news item>
+
+**Security:**
+
+* <news item>

setup.py

@@ -383,7 +383,7 @@ def main():
             "gnureadline; platform_system=='Darwin'",
         ],
     }
-    skw["python_requires"] = ">=3.7"
+    skw["python_requires"] = ">=3.8"
     setup(**skw)
 
 

xonsh/lexer.py

@@ -108,11 +108,6 @@ def token_map():
     tm[NEWLINE] = "NEWLINE"
     tm[INDENT] = "INDENT"
     tm[DEDENT] = "DEDENT"
-    if PYTHON_VERSION_INFO < (3, 7, 0):
-        from xonsh.tokenize import ASYNC, AWAIT
-
-        tm[ASYNC] = "ASYNC"
-        tm[AWAIT] = "AWAIT"
     if HAS_WALRUS:
         tm[(OP, ":=")] = "COLONEQUAL"
     # python 3.10 (backwards and name token compatible) tokens