Add a comment about _typeshed to VERSIONS (#5447)

.github/workflows/mypy_primer.yml

@@ -44,7 +44,7 @@ jobs:
           # fail action if exit code isn't zero or one
           (
             mypy_primer \
-            --new 551eea3697 --old 551eea3697 \
+            --new c605579af8 --old c605579af8 \
             --custom-typeshed-repo typeshed_to_test \
             --new-typeshed $GITHUB_SHA --old-typeshed upstream_master \
             --num-shards 2 --shard-index ${{ matrix.shard-index }} \

stdlib/VERSIONS

@@ -1,5 +1,5 @@
 # The structure of this file is as follows:
-# - Blank lines and lines starting with `#` are ignored.
+# - Blank lines and comments starting with `#` are ignored.
 # - Lines contain the name of a module, followed by a colon,
 #   a space, and a version range (for example: `symbol: 2.7-3.9`).
 #
@@ -48,7 +48,7 @@ _thread: 2.7-
 _threading_local: 3.6-
 _tkinter: 2.7-
 _tracemalloc: 3.6-
-_typeshed: 2.7-
+_typeshed: 2.7-  # not present at runtime, only for type checking
 _warnings: 2.7-
 _weakref: 2.7-
 _weakrefset: 2.7-

tests/check_consistent.py

@@ -107,7 +107,8 @@ def check_versions():
     with open("stdlib/VERSIONS") as f:
         data = f.read().splitlines()
     for line in data:
-        if not line or line.lstrip().startswith("#"):
+        line = line.split("#")[0].strip()
+        if line == "":
             continue
         m = _VERSIONS_RE.match(line)
         if not m:

tests/mypy_test.py

@@ -75,19 +75,19 @@ _VERSION_LINE_RE = re.compile(r"^([a-zA-Z_][a-zA-Z0-9_.]*): ([23]\.\d{1,2})-([23
 
 
 def parse_versions(fname):
-    with open(fname) as f:
-        data = f.read().splitlines()
     result = {}
-    for line in data:
-        # Allow having some comments or empty lines.
-        if not line.strip() or line.startswith("#"):
-            continue
-        m = _VERSION_LINE_RE.match(line)
-        assert m, "invalid VERSIONS line :" + line
-        mod = m.group(1)
-        min_version = parse_version(m.group(2))
-        max_version = parse_version(m.group(3)) if m.group(3) else (99, 99)
-        result[mod] = min_version, max_version
+    with open(fname) as f:
+        for line in f:
+            # Allow having some comments or empty lines.
+            line = line.split("#")[0].strip()
+            if line == "":
+                continue
+            m = _VERSION_LINE_RE.match(line)
+            assert m, "invalid VERSIONS line: " + line
+            mod = m.group(1)
+            min_version = parse_version(m.group(2))
+            max_version = parse_version(m.group(3)) if m.group(3) else (99, 99)
+            result[mod] = min_version, max_version
     return result
 
 
@@ -96,7 +96,7 @@ _VERSION_RE = re.compile(r"^([23])\.(\d+)$")
 
 def parse_version(v_str):
     m = _VERSION_RE.match(v_str)
-    assert m, "invalid version :" + v_str
+    assert m, "invalid version: " + v_str
     return int(m.group(1)), int(m.group(2))