diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..cdd59ea
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+*.mp4
+*.orig
+*.pyc
+__pycache__/
+*.srt
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..940d98c
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,30 @@
+VBIN=${VIRTUAL_ENV}/bin
+
+help: # Print help on Makefile
+	@grep '^[^.#]\+:\s\+.*#' Makefile | \
+	sed "s/\(.\+\):\s*\(.*\) #\s*\(.*\)/`printf "\e[1;33;4;40m"`\1`printf "\033[0m"`	\3/" | \
+	expand -t20
+
+clean: # Remove files not tracked in source control
+	find . -type f -name "*.orig" -delete
+	find . -type f -name "*.pyc" -delete
+	find . -type d -name "__pycache__" -delete
+	find . -type d -empty -delete
+
+format: # Format the code and lint it
+	${VBIN}/black *.py
+	.git/hooks/pre-commit
+
+init-pre_commit: # Set up git pre-commit hook
+	echo "make --no-print-directory --quiet lint" > .git/hooks/pre-commit && chmod u+x .git/hooks/pre-commit
+
+lint: # Lint code
+	${VBIN}/black --quiet --check *.py && echo "✅ black" || echo "🚨 black"
+
+open_all: # Open all projects files
+	${EDITOR} ${VBIN}/activate
+	${EDITOR} .gitignore delarte.py Makefile README.md requirements-dev.txt requirements.txt
+	${EDITOR} .git/hooks/p*-commit
+
+pre_commit: # Run the pre-commit hook
+	bash .git/hooks/pre-commit
diff --git a/README.md b/README.md
index 2c3f356..cb1ce54 100644
--- a/README.md
+++ b/README.md
@@ -46,10 +46,17 @@ Rajouter le code sous-titre en paramètre:
 ### 🚀 Chauffe Marcel!
 
 - `Python 3.10` à été utilisé
+- Code formaté avec [`black`](https://pypi.org/project/black)
+- Installation des outils de développement:
+    * `pip install -r requirements-dev.txt`
+- Un `Makefile` équipé: executer `make help` pour le détail
+- Un  _git hook_ de `pre-commit`
+    * `make init-pre_commit`
+
 
 ### 📌 Dépendances
 
-Voir [`requirements.txt`](requirements.txt)
+Voir [`requirements.txt`](requirements.txt) & [`requirements-dev.txt`](requirements-dev.txt)
 
 
 ### 🤝 Filer un coup de main
diff --git a/delarte.py b/delarte.py
index 07edf39..e0b0cb8 100755
--- a/delarte.py
+++ b/delarte.py
@@ -15,6 +15,7 @@ import webvtt
 
 FFMPEG = environ.get("PATH_FFMPEG", "ffmpeg path not found")
 
+
 def call_api(api_url):
     http_response = urlopen(api_url)
 
@@ -32,15 +33,20 @@ def call_api(api_url):
 
     return (title, versions)
 
+
 def write_subtitles(m3u8_url, base_name):
     main = m3u8.load(m3u8_url)
 
-    sub_m3u8_urls = [(m.base_uri + '/' + m.uri, m.language) for m in main.media if m.type == "SUBTITLES"]
+    sub_m3u8_urls = [
+        (m.base_uri + "/" + m.uri, m.language)
+        for m in main.media
+        if m.type == "SUBTITLES"
+    ]
 
     for sub_m3u8_url, sub_lang in sub_m3u8_urls:
 
         sub_m3u8 = m3u8.load(sub_m3u8_url)
-        sub_urls = [cast(str, sub_m3u8.base_uri) + '/' + f for f in sub_m3u8.files]
+        sub_urls = [cast(str, sub_m3u8.base_uri) + "/" + f for f in sub_m3u8.files]
 
         if not sub_urls:
             raise ValueError("No subtitle files")
@@ -52,9 +58,9 @@ def write_subtitles(m3u8_url, base_name):
         if http_response.status != HTTPStatus.OK:
             raise RuntimeError("Subtitle request failed")
 
-        buffer = io.StringIO(http_response.read().decode('utf8'))
+        buffer = io.StringIO(http_response.read().decode("utf8"))
 
-        with open(f"{base_name}.{sub_lang}.srt", "w", encoding='utf8') as f:
+        with open(f"{base_name}.{sub_lang}.srt", "w", encoding="utf8") as f:
             for i, caption in enumerate(webvtt.read_buffer(buffer), 1):
                 print(i, file=f)
                 print(
@@ -66,14 +72,17 @@ def write_subtitles(m3u8_url, base_name):
                 print(caption.text + "\n", file=f)
             return f.name
 
+
 # command line arguments
-(UI_LANG, _, STREAM_ID, SLUG) = urlparse(sys.argv[1]).path[1:-1].split('/')
+(UI_LANG, _, STREAM_ID, SLUG) = urlparse(sys.argv[1]).path[1:-1].split("/")
 VERSION = " ".join(sys.argv[2:])
 
-if UI_LANG not in ('fr', 'de', 'en', 'es', 'pl', 'it') or _ != "videos":
+if UI_LANG not in ("fr", "de", "en", "es", "pl", "it") or _ != "videos":
     raise ValueError("Invalid URL")
 
-TITLE, VERSIONS = call_api(f"https://api.arte.tv/api/player/v2/config/{UI_LANG}/{STREAM_ID}")
+TITLE, VERSIONS = call_api(
+    f"https://api.arte.tv/api/player/v2/config/{UI_LANG}/{STREAM_ID}"
+)
 
 FILENAME = TITLE.replace("/", "-")
 
@@ -87,11 +96,6 @@ M3U8_URL, VERSION_NAME = VERSIONS[VERSION]
 
 write_subtitles(M3U8_URL, FILENAME)
 
-subprocess.run([
-    FFMPEG,
-    '-i', M3U8_URL,
-    '-c', 'copy',
-    '-bsf:a', 'aac_adtstoasc',
-    f"{FILENAME}.mp4"
-    ]
+subprocess.run(
+    [FFMPEG, "-i", M3U8_URL, "-c", "copy", "-bsf:a", "aac_adtstoasc", f"{FILENAME}.mp4"]
 )
diff --git a/requirements-dev.txt b/requirements-dev.txt
new file mode 100644
index 0000000..7e66a17
--- /dev/null
+++ b/requirements-dev.txt
@@ -0,0 +1 @@
+black