SCR114: pointless-statement

Expression statement with no effect

Code	SCR114
Name	pointless-statement
Category	Scripts (SCR)
Default severity	warning
Enabled by default	yes
Fix available	no
ign-lint equivalent	none

What it does

Reports expression statements that do nothing: a name, an attribute access (self.refreshBinding without parentheses), a comparison (x == 1 meant as x = 1), arithmetic, a literal. Expressions that call something (also with backticks, which call repr), yield or contain a list comprehension (its variables stay bound after it in Python 2) anywhere are not reported.

Inside a try body, a lone name, attribute or subscript is not reported: payload["key"] there checks that the key exists.

Docstrings (the first statement of a module, class or function, including the body of a Perspective script) and string statements right after an assignment (attribute docstrings) are not reported. Other string statements are reported unless allow-strings is set: they are often used to comment out code, which is better done with #.

Why is this bad?

The statement has no effect. Most often a call is missing its parentheses (system.perspective.closePopup) or an assignment was written as a comparison.

Example

def runAction(self, event):
    self.view.custom.dirty == False
    self.getSibling("Table").refreshBinding

Use instead:

def runAction(self, event):
    self.view.custom.dirty = False
    self.getSibling("Table").refreshBinding("props.data")

Options

• allow-strings (default false): do not report string statements.

pylint

Corresponds to W0104 pointless-statement, W0105 pointless-string-statement and W0106 expression-not-assigned. pylint also reports the existence checks in try bodies that iglint allows.

Option reference

Set in [rules.SCR114] of iglint.toml (or [tool.iglint.rules.SCR114] in pyproject.toml).

Option	Type	Default	Description
allow-strings	boolean	false	Do not report string statements.

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Generated from the rule metadata by iglint generate-docs; iglint rule SCR114 prints the same page in the terminal. Source: docs/rules/SCR114.md.