The South Australian Government has rushed a bill before State Parliament to keep notorious paedophile Colin Humphrys behind bars, a day after declaring an Opposition push to do the same was "just a publicity stunt".

When Parliament resumed this morning, Attorney-General Vickie Chapman moved for regular business to be set aside to debate changes to the law — designed to block the release of paedophiles who are unwilling or unable to control their sexual instincts.

The move comes ahead of a decision by the full court of the Supreme Court on whether Humphrys should be released from prison to live under license in the Bowden-Brompton area in Adelaide's inner north-west.

In March, a Supreme Court judge approved an application from Humphrys for his release, against the recommendation of the parole board.

Humphrys has an extensive history of abuse against children dating back to the 1990s, and was jailed indefinitely in 2009 over a case where he assaulted a boy in a toilet block in Port Adelaide.

The Government's decision to press ahead with a change to the laws was supported by the Opposition, which had intended to introduce its own changes to the law.

Ms Chapman spoke out yesterday morning against Labor's proposed bill, arguing any change to the law should wait for the court's decision.

"In the absence of actually having the determination and making sure that what we do do is effective, then that's really just a publicity stunt," she told ABC Radio Adelaide.

But today, the Attorney-General agreed to expedite the Government's own bill, which seeks to reverse the onus of proof to require dangerous paedophiles to prove they were willing and able to control their sexual instincts.

"We will ensure that the community is protected," Ms Chapman told Parliament.

"We will ensure that convicted offenders who are unable or unwilling to control their sexual instincts do not pose a risk to the community."

'Largely the same bill', Opposition Leader says

Opposition Leader Peter Malinauskas welcomed the Government's change of heart.

"The fact that the Government is now introducing a bill today is a good thing, and if they do introduce the bill today, we'll work with them cooperatively on their version," he said.

Opposition Leader Peter Malinauskas urged the Government to prioritise debate on the bill. ( ABC News: Michael Clements )

"It is largely the same bill but at the same time, we reserve our rights to make sure it does everything that we expect, including references to the parole board."

Mr Malinauskas urged the Government to prioritise debate on the bill so it could pass through Parliament this week.

"There is no higher priority than keeping our children safe," he said.

"And I hope the Government treats this legislation with the urgency it deserves."

But Ms Chapman lashed out at the Opposition Leader, describing his conduct over the Humphrys matter as "unconscionable".

She said the Opposition had only advised the Government of its own proposed bill on Sunday night, via an email to the chief executive of her department.