相关规则
Portugal
Practice Relating to Rule 161. International Cooperation in Criminal Proceedings
Section B. Extradition
Portugal’s Law on International Judicial Cooperation in Criminal Matters (1999), as amended in 2001, provides:
1. Extradition may be granted only for the purpose either of instituting criminal proceedings or of executing a sanction or measure involving deprivation of liberty, for an offence that the courts of the requesting State have jurisdiction to try.
2. For any such purpose, surrender of a person shall be possible only in respect of offences, including attempted offences, that are punishable under both the Portuguese law and the law of the requesting State by a sanction or measure involving deprivation of liberty for a maximum period of at least one year … 
Portugal, Law on International Judicial Cooperation in Criminal Matters, 1999, as amended in 2001, Article 31.