Fix tests for Python 3.10.1 (2) (#11756)

Followup to #11752. The syntax error changed between 3.10.0 and 3.10.1.
https://bugs.python.org/issue46004

I missed a few the first time around unfortunately.
https://bugs.python.org/issue46004

Instead of duplicating the original output, I chose to extend the test syntax 
introduced with #10404 and added support for == version checks.

mypy/test/data.py

@@ -114,9 +114,11 @@ def parse_test_case(case: 'DataDrivenTestCase') -> None:
                 if arg == 'skip-path-normalization':
                     normalize_output = False
                 if arg.startswith("version"):
-                    if arg[7:9] != ">=":
+                    compare_op = arg[7:9]
+                    if compare_op not in {">=", "=="}:
                         raise ValueError(
-                            "{}, line {}: Only >= version checks are currently supported".format(
+                            "{}, line {}: Only >= and == version checks are currently supported"
+                            .format(
                                 case.file, item.line
                             )
                         )
@@ -127,9 +129,17 @@ def parse_test_case(case: 'DataDrivenTestCase') -> None:
                         raise ValueError(
                             '{}, line {}: "{}" is not a valid python version'.format(
                                 case.file, item.line, version_str))
-                    if not sys.version_info >= version:
-                        version_check = False
-
+                    if compare_op == ">=":
+                        version_check = sys.version_info >= version
+                    elif compare_op == "==":
+                        if not 1 < len(version) < 4:
+                            raise ValueError(
+                                '{}, line {}: Only minor or patch version checks '
+                                'are currently supported with "==": "{}"'.format(
+                                    case.file, item.line, version_str
+                                )
+                            )
+                        version_check = sys.version_info[:len(version)] == version
             if version_check:
                 tmp_output = [expand_variables(line) for line in item.data]
                 if os.path.sep == '\\' and normalize_output:

test-data/unit/check-errorcodes.test

@@ -34,10 +34,8 @@ reveal_type(1) # N: Revealed type is "Literal[1]?"
 1 ''
 [out]
 main:1: error: invalid syntax  [syntax]
-[out version>=3.10]
+[out version==3.10.0]
 main:1: error: invalid syntax. Perhaps you forgot a comma?  [syntax]
-[out version>=3.10.1]
-main:1: error: invalid syntax  [syntax]
 
 [case testErrorCodeSyntaxError2]
 def f(): # E: Type signature has too many arguments  [syntax]

test-data/unit/fine-grained-blockers.test

@@ -156,7 +156,7 @@ class C:
 a.py:1: error: invalid syntax
 ==
 main:5: error: Missing positional argument "x" in call to "f" of "C"
-[out version>=3.10]
+[out version==3.10.0]
 ==
 a.py:1: error: invalid syntax. Perhaps you forgot a comma?
 ==
@@ -176,7 +176,7 @@ main:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missin
 a.py:1: error: invalid syntax
 ==
 main:2: error: Too many arguments for "f"
-[out version>=3.10]
+[out version==3.10.0]
 main:1: error: Cannot find implementation or library stub for module named "a"
 main:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
 ==
@@ -259,7 +259,7 @@ a.py:1: error: invalid syntax
 a.py:1: error: invalid syntax
 ==
 a.py:2: error: Missing positional argument "x" in call to "f"
-[out version>=3.10]
+[out version==3.10.0]
 ==
 a.py:1: error: invalid syntax. Perhaps you forgot a comma?
 ==
@@ -330,7 +330,7 @@ a.py:1: error: invalid syntax
 main:1: error: Cannot find implementation or library stub for module named "a"
 main:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
 b.py:1: error: Cannot find implementation or library stub for module named "a"
-[out version>=3.10]
+[out version==3.10.0]
 ==
 a.py:1: error: invalid syntax. Perhaps you forgot a comma?
 ==
@@ -358,7 +358,7 @@ a.py:1: error: invalid syntax
 b.py:1: error: Cannot find implementation or library stub for module named "a"
 b.py:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
 main:1: error: Cannot find implementation or library stub for module named "a"
-[out version>=3.10]
+[out version==3.10.0]
 ==
 a.py:1: error: invalid syntax. Perhaps you forgot a comma?
 ==
@@ -388,7 +388,7 @@ a.py:1: error: invalid syntax
 ==
 b.py:2: error: Module has no attribute "f"
 b.py:3: error: "int" not callable
-[out version>=3.10]
+[out version==3.10.0]
 ==
 a.py:1: error: invalid syntax. Perhaps you forgot a comma?
 ==
@@ -411,7 +411,7 @@ def f() -> None: pass
 <ROOT>/test-data/unit/lib-stub/blocker.pyi:2: error: invalid syntax
 ==
 a.py:1: error: "int" not callable
-[out version>=3.10]
+[out version==3.10.0]
 ==
 <ROOT>/test-data/unit/lib-stub/blocker.pyi:2: error: invalid syntax. Perhaps you forgot a comma?
 ==
@@ -490,7 +490,7 @@ a.py:1: error: invalid syntax
 <ROOT>/test-data/unit/lib-stub/blocker.pyi:2: error: invalid syntax
 ==
 a.py:2: error: "int" not callable
-[out version>=3.10]
+[out version==3.10.0]
 ==
 a.py:1: error: invalid syntax. Perhaps you forgot a comma?
 ==
@@ -515,7 +515,7 @@ a.py:1: error: invalid syntax
 ==
 b.py:2: error: Incompatible return value type (got "str", expected "int")
 ==
-[out version>=3.10]
+[out version==3.10.0]
 a.py:1: error: invalid syntax. Perhaps you forgot a comma?
 ==
 b.py:2: error: Incompatible return value type (got "str", expected "int")

test-data/unit/parse.test

@@ -935,7 +935,7 @@ MypyFile:1(
 x not y
 [out]
 main:1: error: invalid syntax
-[out version>=3.10]
+[out version==3.10.0]
 main:1: error: invalid syntax. Perhaps you forgot a comma?
 
 [case testNotIs]
@@ -946,7 +946,7 @@ x not is y # E: invalid syntax
 1 ~ 2
 [out]
 main:1: error: invalid syntax
-[out version>=3.10]
+[out version==3.10.0]
 main:1: error: invalid syntax. Perhaps you forgot a comma?
 
 [case testSliceInList39]