The Constitution of the Federal Republic of Brazil said

The Constitution of the Federal Republic of Brazil said at Art. 5, XLVII "There will be no penalties of: a) death, except in cases of declared war as defined in Art. 84, XIX". Art. 5 is included under Title II, "Fundamental Rights and Guarantees."
Brazil has been abolitionist for ordinary crimes since 1979. It had first abolished the death penalty in 1882, but it was reintroduced in 1969 for political crimes only for the next decade. There were no executions during this period, the last execution dates way back to 1855.
Only the Supreme Court has the competence to grant extradition. It does not do so when the defendant risks the death penalty or a penalty more severe than the one s/he would have, for the same crime, under Brazilian law.