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explicit-string-concatenation (ISC003)

Added in v0.0.201 · Related issues · View source

Derived from the flake8-implicit-str-concat linter.

Fix is sometimes available.

What it does

Checks for string literals that are explicitly concatenated (using the + operator).

Why is this bad?

For string literals that wrap across multiple lines, implicit string concatenation within parentheses is preferred over explicit concatenation using the + operator, as the former is more readable.

Example

z = (
    "The quick brown fox jumps over the lazy "
    + "dog"
)

Use instead:

z = (
    "The quick brown fox jumps over the lazy "
    "dog"
)

Options

Setting lint.flake8-implicit-str-concat.allow-multiline = false will disable this rule because it would leave no allowed way to write a multi-line string.