checklist.md

Сheck Your Code Against the Following Points

1. One function - one purpose.

Remember the principle that one function is one purpose. So if it is needed - put some code into a separate method, feel free about it.

2. Don't use redundant statements.

Don't use a redundant return statement if it doesn't do anything.

Good example:

def change_item(self) -> None:
    self.length += 2

Bad example:

def change_item(self) -> None:
    self.length += 2
    return

Also, don't use an empty return if you have multiple conditions and an elif statement can be used.

Good example:

if a == b:
    # do something
elif a == c:
    # do something
elif a == d:
    # do something

Bad example:

if a == b:
    # do something
    return
if a == c:
    # do something
    return
if a == d:
    # do something
    return

3. Don't use redundant elif.

Don't use redundant else if a non-empty return is used:

Good example:

if a == b:
    if a == c:
        return "Yes"
    return "Maybe"
return "No"

Bad example:

if a == b:
    if a == c:
        return "Yes"
    else:
        return "Maybe"
else:
    return "No"

4. Remove unused attributes.

Check that all the attributes you define in the __init__ method are used.