Use new NamedTuples in mypy (#13130)

Author: hauntsaninja

mypy/fswatcher.py

@@ -4,9 +4,10 @@
 from typing import AbstractSet, Dict, Iterable, List, NamedTuple, Optional, Set, Tuple
 
 
-FileData = NamedTuple('FileData', [('st_mtime', float),
-                                   ('st_size', int),
-                                   ('hash', str)])
+class FileData(NamedTuple):
+    st_mtime: float
+    st_size: int
+    hash: str
 
 
 class FileSystemWatcher:

mypy/modulefinder.py

@@ -30,15 +30,11 @@
 
 
 # Paths to be searched in find_module().
-SearchPaths = NamedTuple(
-    'SearchPaths',
-    [
-        ('python_path', Tuple[str, ...]),  # where user code is found
-        ('mypy_path', Tuple[str, ...]),  # from $MYPYPATH or config variable
-        ('package_path', Tuple[str, ...]),  # from get_site_packages_dirs()
-        ('typeshed_path', Tuple[str, ...]),  # paths in typeshed
-    ]
-)
+class SearchPaths(NamedTuple):
+    python_path: Tuple[str, ...]  # where user code is found
+    mypy_path: Tuple[str, ...]  # from $MYPYPATH or config variable
+    package_path: Tuple[str, ...]  # from get_site_packages_dirs()
+    typeshed_path: Tuple[str, ...]  # paths in typeshed
 
 
 # Package dirs are a two-tuple of path to search and whether to verify the module