apply formatting with black (#1038)

* applying black (with the default 88-column limit)

* add flake8

* add isort

* fix isort

setup.py

@@ -2,7 +2,7 @@ import os
 import sys
 
 import pkg_resources
-from setuptools import setup, find_packages
+from setuptools import find_packages, setup
 
 
 def read_version(fname="whisper/version.py"):
@@ -16,7 +16,10 @@ if sys.platform.startswith("linux"):
     try:
         import re
         import subprocess
-        version_line = subprocess.check_output(["nvcc", "--version"]).strip().split(b"\n")[-1]
+
+        version_line = (
+            subprocess.check_output(["nvcc", "--version"]).strip().split(b"\n")[-1]
+        )
         major, minor = re.findall(rb"([\d]+)\.([\d]+)", version_line)[0]
         if (int(major), int(minor)) < (11, 4):
             # the last version supporting CUDA < 11.4
@@ -38,7 +41,8 @@ setup(
     url="https://github.com/openai/whisper",
     license="MIT",
     packages=find_packages(exclude=["tests*"]),
-    install_requires=requirements + [
+    install_requires=requirements
+    + [
         str(r)
         for r in pkg_resources.parse_requirements(
             open(os.path.join(os.path.dirname(__file__), "requirements.txt"))
@@ -48,5 +52,5 @@ setup(
         "console_scripts": ["whisper=whisper.transcribe:cli"],
     },
     include_package_data=True,
-    extras_require={"dev": ["pytest", "scipy"]},
+    extras_require={"dev": ["pytest", "scipy", "black", "flake8", "isort"]},
 )