[Python-checkins] Clean up unused imports for the peg generator module (GH-19891)

[Anthony Shaw]

https://github.com/python/cpython/commit/c95e691c904bb5ebd91825efa81b93cb9e354a85
commit: c95e691c904bb5ebd91825efa81b93cb9e354a85
branch: master
author: Anthony Shaw <anthony.p.shaw at gmail.com>
committer: GitHub <noreply at github.com>
date: 2020-05-04T03:03:05+01:00
summary:

Clean up unused imports for the peg generator module (GH-19891)

files:
M Tools/peg_generator/pegen/build.py
M Tools/peg_generator/pegen/c_generator.py
M Tools/peg_generator/pegen/first_sets.py
M Tools/peg_generator/pegen/grammar.py
M Tools/peg_generator/pegen/grammar_visualizer.py
M Tools/peg_generator/scripts/ast_timings.py
M Tools/peg_generator/scripts/benchmark.py
M Tools/peg_generator/scripts/find_max_nesting.py
M Tools/peg_generator/scripts/test_parse_directory.py

diff --git a/Tools/peg_generator/pegen/build.py b/Tools/peg_generator/pegen/build.py
index 8f9348ddf24ac..931ffc787523b 100644
--- a/Tools/peg_generator/pegen/build.py
+++ b/Tools/peg_generator/pegen/build.py
@@ -1,12 +1,11 @@
 import pathlib
 import shutil
 import tokenize
-import sys
 import sysconfig
 import tempfile
 import itertools
 
-from typing import Optional, Tuple, List, IO, Iterator, Set, Dict
+from typing import Optional, Tuple, List, IO, Set, Dict
 
 from pegen.c_generator import CParserGenerator
 from pegen.grammar import Grammar
diff --git a/Tools/peg_generator/pegen/c_generator.py b/Tools/peg_generator/pegen/c_generator.py
index c9c67067d4677..40004e7875278 100644
--- a/Tools/peg_generator/pegen/c_generator.py
+++ b/Tools/peg_generator/pegen/c_generator.py
@@ -1,7 +1,7 @@
 import ast
 from dataclasses import dataclass, field
 import re
-from typing import IO, Any, Dict, List, Optional, Set, Text, Tuple
+from typing import Any, Dict, IO, Optional, List, Text, Tuple, Set
 from enum import Enum
 
 from pegen import grammar
diff --git a/Tools/peg_generator/pegen/first_sets.py b/Tools/peg_generator/pegen/first_sets.py
index da30eba99ce5a..71be5a2e7cbf4 100755
--- a/Tools/peg_generator/pegen/first_sets.py
+++ b/Tools/peg_generator/pegen/first_sets.py
@@ -1,10 +1,9 @@
 #!/usr/bin/env python3.8
 
 import argparse
-import collections
 import pprint
 import sys
-from typing import Optional, Set, Dict
+from typing import Set, Dict
 
 from pegen.build import build_parser
 from pegen.grammar import (
diff --git a/Tools/peg_generator/pegen/grammar.py b/Tools/peg_generator/pegen/grammar.py
index 67039d5a032ab..78edf412ea6e4 100644
--- a/Tools/peg_generator/pegen/grammar.py
+++ b/Tools/peg_generator/pegen/grammar.py
@@ -4,7 +4,6 @@
 from typing import (
     AbstractSet,
     Any,
-    Callable,
     Dict,
     Iterable,
     Iterator,
@@ -13,11 +12,9 @@
     Set,
     Tuple,
     TYPE_CHECKING,
-    TypeVar,
     Union,
 )
 
-from pegen.parser import memoize, Parser
 
 if TYPE_CHECKING:
     from pegen.parser_generator import ParserGenerator
diff --git a/Tools/peg_generator/pegen/grammar_visualizer.py b/Tools/peg_generator/pegen/grammar_visualizer.py
index b1d51d2cdb250..7362ec5fa0f4d 100644
--- a/Tools/peg_generator/pegen/grammar_visualizer.py
+++ b/Tools/peg_generator/pegen/grammar_visualizer.py
@@ -1,7 +1,7 @@
 import argparse
 import sys
 
-from typing import Any, Iterator, Iterable, Callable
+from typing import Any, Iterator, Callable
 
 from pegen.build import build_parser
 from pegen.grammar import Grammar, Rule
diff --git a/Tools/peg_generator/scripts/ast_timings.py b/Tools/peg_generator/scripts/ast_timings.py
index 7ebd46fdac685..ca252208f283e 100644
--- a/Tools/peg_generator/scripts/ast_timings.py
+++ b/Tools/peg_generator/scripts/ast_timings.py
@@ -1,8 +1,6 @@
 import ast
 import sys
 import time
-import token
-import tokenize
 
 from pegen.testutil import print_memstats
 
diff --git a/Tools/peg_generator/scripts/benchmark.py b/Tools/peg_generator/scripts/benchmark.py
index 0e9d5bd104813..d39ac3dca79e7 100644
--- a/Tools/peg_generator/scripts/benchmark.py
+++ b/Tools/peg_generator/scripts/benchmark.py
@@ -4,7 +4,6 @@
 import ast
 import sys
 import os
-import resource
 from time import time
 
 import memory_profiler
diff --git a/Tools/peg_generator/scripts/find_max_nesting.py b/Tools/peg_generator/scripts/find_max_nesting.py
index a2c41a821342a..f2fdd00bfb7cd 100755
--- a/Tools/peg_generator/scripts/find_max_nesting.py
+++ b/Tools/peg_generator/scripts/find_max_nesting.py
@@ -13,11 +13,7 @@
 
 Usage: python -m scripts.find_max_nesting
 """
-import os
 import sys
-from tempfile import TemporaryDirectory
-from pathlib import Path
-from typing import Any
 
 from _peg_parser import parse_string
 
diff --git a/Tools/peg_generator/scripts/test_parse_directory.py b/Tools/peg_generator/scripts/test_parse_directory.py
index a6078ef564061..aef9c74b52881 100755
--- a/Tools/peg_generator/scripts/test_parse_directory.py
+++ b/Tools/peg_generator/scripts/test_parse_directory.py
@@ -4,7 +4,6 @@
 import ast
 import os
 import sys
-import tempfile
 import time
 import traceback
 from glob import glob