25
How to properly document code?
(lemmy.world)
submitted
11 months ago* (last edited 11 months ago)
by
Asudox@lemmy.world
to
c/programming@programming.dev
I just recently started documenting my code as it helped me. Though I feel like my documentations are a bit too verbose and probably unneeded on obvious parts of my code.
So I started commenting above a few lines of code and explain it in a short sentence what I do or why I do that, then leave a space under it for the next line so it is easier to read.
What do you think about this?
Edit: real code example from one of my projects:
async def discord_login_callback(request: HttpRequest) -> HttpResponseRedirect:
async def exchange_oauth2_code(code: str) -> str | None:
data = {
'grant_type': 'authorization_code',
'code': code,
'redirect_uri': OAUTH2_REDIRECT_URI
}
headers = {
'Content-Type': 'application/x-www-form-urlencoded'
}
async with httpx.AsyncClient() as client:
# get user's access and refresh tokens
response = await client.post(f"{BASE_API_URI}/oauth2/token", data=data, headers=headers, auth=(CLIENT_ID, CLIENT_SECRET))
if response.status_code == 200:
access_token, refresh_token = response.json()["access_token"], response.json()["refresh_token"]
# get user data via discord's api
user_data = await client.get(f"{BASE_API_URI}/users/@me", headers={"Authorization": f"Bearer {access_token}"})
user_data = user_data.json()
user_data.update({"access_token": access_token, "refresh_token": refresh_token}) # add tokens to user_data
return user_data, None
else:
# if any error occurs, return error context
context = generate_error_dictionary("An error occurred while trying to get user's access and refresh tokens", f"Response Status: {response.status_code}\nError: {response.content}")
return None, context
code = request.GET.get("code")
user, context = await exchange_oauth2_code(code)
# login if user's discord user data is returned
if user:
discord_user = await aauthenticate(request, user=user)
await alogin(request, user=discord_user, backend="index.auth.DiscordAuthenticationBackend")
return redirect("index")
else:
return render(request, "index/errorPage.html", context)
I find too verbose comments less annoying than no comments.
Try to describe the bigger picture. Good comments allow understanding the current portion of the code without reading other code.
Also add comments later if you find yourself having to read other code to understand the code you're currently looking at.
Comments are also a good place to write out abrevations/acronyms.
Never optimize for sourcecode size.