apply black and isort (#4287)

* apply black and isort

* move some type ignores

stdlib/2and3/zlib.pyi

@@ -1,7 +1,7 @@
 # Stubs for zlib
 import sys
 from array import array
-from typing import Union, Any
+from typing import Any, Union
 
 DEFLATED: int
 DEF_MEM_LEVEL: int
@@ -23,13 +23,11 @@ if sys.version_info >= (3,):
 
 class error(Exception): ...
 
-
 class _Compress:
     def compress(self, data: bytes) -> bytes: ...
     def flush(self, mode: int = ...) -> bytes: ...
     def copy(self) -> _Compress: ...
 
-
 class _Decompress:
     unused_data: bytes
     unconsumed_tail: bytes
@@ -39,19 +37,24 @@ class _Decompress:
     def flush(self, length: int = ...) -> bytes: ...
     def copy(self) -> _Decompress: ...
 
-
 def adler32(__data: bytes, __value: int = ...) -> int: ...
 def compress(__data: bytes, level: int = ...) -> bytes: ...
+
 if sys.version_info >= (3,):
-    def compressobj(level: int = ..., method: int = ..., wbits: int = ...,
-                    memLevel: int = ..., strategy: int = ...,
-                    zdict: bytes = ...) -> _Compress: ...
+    def compressobj(
+        level: int = ..., method: int = ..., wbits: int = ..., memLevel: int = ..., strategy: int = ..., zdict: bytes = ...
+    ) -> _Compress: ...
+
 else:
-    def compressobj(level: int = ..., method: int = ..., wbits: int = ...,
-                    memlevel: int = ..., strategy: int = ...) -> _Compress: ...
+    def compressobj(
+        level: int = ..., method: int = ..., wbits: int = ..., memlevel: int = ..., strategy: int = ...
+    ) -> _Compress: ...
+
 def crc32(__data: Union[array[Any], bytes], __value: int = ...) -> int: ...
 def decompress(__data: bytes, wbits: int = ..., bufsize: int = ...) -> bytes: ...
+
 if sys.version_info >= (3,):
     def decompressobj(wbits: int = ..., zdict: bytes = ...) -> _Decompress: ...
+
 else:
     def decompressobj(wbits: int = ...) -> _Decompress: ...