Revert "Add colour to the output of mypy_test" (#7874)

Revert "Add colour to the output of `mypy_test` (#7872)"

This reverts commit 753eb053ac.

tests/mypy_test.py

@@ -19,8 +19,6 @@ import subprocess
 import sys
 import tempfile
 from collections.abc import Iterable
-from contextlib import redirect_stdout
-from io import StringIO
 from pathlib import Path
 from typing import TYPE_CHECKING, NamedTuple
 
@@ -30,7 +28,6 @@ if TYPE_CHECKING:
 from typing_extensions import TypeAlias
 
 import tomli
-from colors import colored, print_error, print_success_msg
 
 parser = argparse.ArgumentParser(description="Test runner for typeshed. Patterns are unanchored regexps on the full path.")
 parser.add_argument("-v", "--verbose", action="count", default=0, help="More output")
@@ -168,7 +165,7 @@ def run_mypy(
     try:
         from mypy.api import run as mypy_run
     except ImportError:
-        print_error("Cannot import mypy. Did you install it?")
+        print("Cannot import mypy. Did you install it?")
         sys.exit(1)
 
     with tempfile.NamedTemporaryFile("w+") as temp:
@@ -186,14 +183,9 @@ def run_mypy(
         if args.dry_run:
             exit_code = 0
         else:
-            stdout_file = StringIO()
-            with redirect_stdout(stdout_file):
-                stdout, stderr, exit_code = mypy_run(mypy_args)
-            if exit_code:
-                if stderr:
-                    print_error(stderr)
-                if stdout:
-                    print_error(stdout_file.getvalue(), end="")
+            stdout, stderr, exit_code = mypy_run(mypy_args)
+            print(stdout, end="")
+            print(stderr, end="")
         return exit_code
 
 
@@ -202,11 +194,8 @@ ReturnCode: TypeAlias = int
 
 def run_mypy_as_subprocess(directory: StrPath, flags: Iterable[str]) -> ReturnCode:
     result = subprocess.run([sys.executable, "-m", "mypy", directory, *flags], capture_output=True)
-    stdout, stderr = result.stdout, result.stderr
-    if stderr:
-        print_error(stderr.decode())
-    if stdout:
-        print_error(stdout.decode())
+    print(result.stdout.decode())
+    print(result.stderr.decode())
     return result.returncode
 
 
@@ -245,7 +234,6 @@ def get_mypy_flags(
     if strict:
         flags.append("--strict")
     if test_suite_run:
-        flags.append("--namespace-packages")
         if sys.platform == "win32" or args.platform == "win32":
             flags.extend(["--exclude", "tests/pytype_test.py"])
     else:
@@ -303,17 +291,13 @@ def test_third_party_distribution(distribution: str, major: int, minor: int, arg
     seen_dists: set[str] = set()
     add_third_party_files(distribution, major, files, args, configurations, seen_dists)
 
-    print(f"testing {distribution} ({len(files)} files)... ", end="")
+    print(f"testing {distribution} ({len(files)} files)...")
 
     if not files:
-        print_error("no files found")
+        print("--- no files found ---")
         sys.exit(1)
 
     code = run_mypy(args, configurations, major, minor, files)
-
-    if not code:
-        print_success_msg()
-
     return code, len(files)
 
 
@@ -354,9 +338,6 @@ def test_stdlib(code: int, major: int, minor: int, args: argparse.Namespace) ->
         this_code = run_mypy(args, [], major, minor, files, custom_typeshed=True)
         code = max(code, this_code)
 
-        if not code:
-            print_success_msg()
-
     return TestResults(code, len(files))
 
 
@@ -394,8 +375,6 @@ def test_the_test_scripts(code: int, major: int, minor: int, args: argparse.Name
     else:
         this_code = run_mypy_as_subprocess("tests", flags)
     code = max(code, this_code)
-    if not code:
-        print_success_msg()
     return TestResults(code, num_test_files_to_test)
 
 
@@ -414,8 +393,6 @@ def test_the_test_cases(code: int, major: int, minor: int, args: argparse.Namesp
             shutil.copytree(Path("test_cases"), Path(td) / "test_cases")
             this_code = run_mypy_as_subprocess(td, flags)
     code = max(code, this_code)
-    if not code:
-        print_success_msg()
     return TestResults(code, num_test_case_files)
 
 
@@ -456,7 +433,7 @@ def main() -> None:
     if args.python_version:
         versions = [v for v in versions if any(("%d.%d" % v).startswith(av) for av in args.python_version)]
         if not versions:
-            print_error("--- no versions selected ---")
+            print("--- no versions selected ---")
             sys.exit(1)
 
     code = 0
@@ -465,17 +442,13 @@ def main() -> None:
         code, files_checked_this_version = test_typeshed(code, major, minor, args)
         total_files_checked += files_checked_this_version
     if code:
-        print_error(f"--- exit status {code}, {total_files_checked} files checked ---")
+        print(f"--- exit status {code}, {total_files_checked} files checked ---")
         sys.exit(code)
     if not total_files_checked:
-        print_error("--- nothing to do; exit 1 ---")
+        print("--- nothing to do; exit 1 ---")
         sys.exit(1)
-    print(colored(f"--- success, {total_files_checked} files checked ---", "green"))
+    print(f"--- success, {total_files_checked} files checked ---")
 
 
 if __name__ == "__main__":
-    try:
-        main()
-    except KeyboardInterrupt:
-        print_error("\n\n!!!\nTest aborted due to KeyboardInterrupt\n!!!")
-        sys.exit(1)
+    main()