California Code, Penal Code - PEN § 664

(a) If the crime attempted is punishable by imprisonment in the state prison, or by imprisonment pursuant to subdivision (h) of Section 1170, the person guilty of the attempt shall be punished by imprisonment in the state prison or in a county jail, respectively, for one-half the term of imprisonment prescribed upon a conviction of the offense attempted. However, if the crime attempted is willful, deliberate, and premeditated murder, as defined in Section 189, the person guilty of that attempt shall be punished by imprisonment in the state prison for life with the possibility of parole. If the crime attempted is any other one in which the maximum sentence is life imprisonment or death, the person guilty of the attempt shall be punished by imprisonment in the state prison for five, seven, or nine years. The additional term provided in this section for attempted willful, deliberate, and premeditated murder shall not be imposed unless the fact that the attempted murder was willful, deliberate, and premeditated is charged in the accusatory pleading and admitted or found to be true by the trier of fact.

(b) If the crime attempted is punishable by imprisonment in a county jail, the person guilty of the attempt shall be punished by imprisonment in a county jail for a term not exceeding one-half the term of imprisonment prescribed upon a conviction of the offense attempted.

(c) If the offense so attempted is punishable by a fine, the offender convicted of that attempt shall be punished by a fine not exceeding one-half the largest fine which may be imposed upon a conviction of the offense attempted.

(d) If a crime is divided into degrees, an attempt to commit the crime may be of any of those degrees, and the punishment for the attempt shall be determined as provided by this section.

(e) Notwithstanding subdivision (a), if attempted murder is committed upon a peace officer or firefighter, as those terms are defined in paragraphs (7) and (9) of subdivision (a) of Section 190.2, a custodial officer, as that term is defined in subdivision (a) of Section 831 or subdivision (a) of Section 831.5, a custody assistant, as that term is defined in subdivision (a) of Section 831.7, or a nonsworn uniformed employee of a sheriff's department whose job entails the care or control of inmates in a detention facility, as defined in subdivision (c) of Section 289.6, and the person who commits the offense knows or reasonably should know that the victim is a peace officer, firefighter, custodial officer, custody assistant, or nonsworn uniformed employee of a sheriff's department engaged in the performance of his or her duties, the person guilty of the attempt shall be punished by imprisonment in the state prison for life with the possibility of parole.

This subdivision shall apply if it is proven that a direct but ineffectual act was committed by one person toward killing another human being and the person committing the act harbored express malice aforethought, namely, a specific intent to unlawfully kill another human being. The Legislature finds and declares that this paragraph is declaratory of existing law.

(f) Notwithstanding subdivision (a), if the elements of subdivision (e) are proven in an attempted murder and it is also charged and admitted or found to be true by the trier of fact that the attempted murder was willful, deliberate, and premeditated, the person guilty of the attempt shall be punished by imprisonment in the state prison for 15 years to life. Article 2.5 (commencing with Section 2930) of Chapter 7 of Title 1 of Part 3 shall not apply to reduce this minimum term of 15 years in state prison, and the person shall not be released prior to serving 15 years' confinement.