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

Barbara Streisand
Release: 2024-12-13 03:49:10
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How Do I Split Long Strings Across Multiple Lines in Python?

Splitting Long Strings Over Multiple Lines in Python

When working with lengthy queries or other long strings, it can be challenging to keep code readable. In JavaScript, you can concatenate multiple sentences using the operator to split the string across lines. However, this approach may not yield the desired results in Python.

Instead, Python offers two alternatives for splitting long strings:

Multi-Line Strings (Triple Quotes)

This is the preferred and most Pythonic method. To create a multi-line string, use three single or double quotes at the beginning and end of the string. Anything between the quotes will become part of the string, including blanks and newlines.

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
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Parenthesis (Line Continuation)

Another option is to use parenthesis, similar to the operator in JavaScript. However, no commas are necessary. Simply place the strings to be joined into a pair of parenthesis.

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
         )
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Note that this approach will not include any extra blanks or newlines. Be sure to account for any necessary spacing and line breaks manually.

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