SCR203: unknown-system-keyword

Keyword argument a system.* function does not accept

Code	SCR203
Name	unknown-system-keyword
Category	Scripts (SCR)
Default severity	error
Enabled by default	yes
Fix available	no
ign-lint equivalent	none

What it does

Reports keyword arguments to system.* functions that the function does not accept in the scope the script runs in: any keyword passed to a function implemented as a plain Java method (those take positional arguments only), and a keyword that is not a parameter name of a function implemented in Python.

Unknown keywords of Java functions that accept keywords (@KeywordArgs, most of the 8.x API) are not reported: some of them parse their arguments with PyArgParser, which rejects unknown keywords, but others read them into a map (PyArgumentMap) that silently ignores them, and the stubs do not record which one a function uses.

The same exclusions as SCR202 apply: calls that unpack arguments, functions whose parameters the stubs do not know, and, in library modules, calls that are valid in at least one scope where the function exists.

Why is this bad?

Jython raises TypeError when the call runs ("takes no keyword arguments" or "unexpected keyword argument").

Example

def runAction(self, event):
    later = system.date.addDays(date=system.date.now(), value=1)

Use instead:

def runAction(self, event):
    later = system.date.addDays(system.date.now(), 1)

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Generated from the rule metadata by iglint generate-docs; iglint rule SCR203 prints the same page in the terminal. Source: docs/rules/SCR203.md.