How Can I Split Long Strings Across Multiple Lines in Python?

Splitting Long Strings in Python

In Python, there are multiple ways to split a long string over multiple lines. Unlike in JavaScript, where the ' ' operator can be used to concatenate strings, Python requires a different approach.

Multi-line Strings:

The most straightforward method is to use triple quotes to create a multi-line string. This allows you to create a string that can span multiple lines without the need for special characters like ''. Example:

query = """
SELECT action.descr as "action",
    role.id as role_id,
    role.descr as role
FROM
    public.role_action_def,
    public.role,
    public.record_def,
    public.action
WHERE role.id = role_action_def.role_id AND
    record_def.id = role_action_def.def_id AND
    action.id = role_action_def.action_id AND
    role_action_def.account_id = ' + account_id + ' AND
    record_def.account_id=' + account_id + ' AND
    def_id=' + def_id

Multi-line strings can contain both single and double quotes, as well as any other characters within the triple quotes.

String Concatenation:

Another option is to concatenate multiple strings together. This can be done using the ' ' operator, but it requires that each string is enclosed in parentheses. Example:

query = ("SELECT action.descr as \"action\","
         "    role.id as role_id,"
         "    role.descr as role"
         "FROM"
         "    public.role_action_def,"
         "    public.role,"
         "    public.record_def,"
         "    public.action"
         "WHERE role.id = role_action_def.role_id AND"
         "    record_def.id = role_action_def.def_id AND"
         "    action.id = role_action_def.action_id AND"
         "    role_action_def.account_id = ' + account_id + ' AND"
         "    record_def.account_id=' + account_id + ' AND"
         "    def_id=' + def_id)

When concatenating strings, it's important to ensure that any necessary spaces and punctuation are included in the individual strings.

Both multi-line strings and string concatenation offer different levels of readability and flexibility when splitting long strings in Python.

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