The def statement introduces methods.

def语句引入方法。

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Listing 2. Don't forget the def keyword!

清单2 .不要忘记def关键字！

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Method definitions start with the def keyword.

方法定义由def关键字开始。

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The festival is planned from August seventh to the ninth with performers including Etta James, Branford Marsalis, Tony Bennett and Mos Def.

VOA: special.2009.06.08

In the past ten years, Mos Def has become a successful actor in plays and movies.

VOA: special.2009.07.24

Mos Def first became popular as a rapper during the nineteen nineties.

VOA: special.2009.07.24

Ironically, the opportunity to own his masters was what convinced him to take the Def Jam gig over a similar job at Warner Music Group.

FORBES: Jay-Z's New Publishing Deal Is Just The Beginning

That led to a contract in 2009 with the Def Jam label, but not much came of it initially, and Mr. Ocean turned his attention to working with an underground rap collective known as Odd Future.

WSJ: Not Your Granny's Grammys

The NSA director, General Keith Alexander, is coming under scrutiny after he told a crowd gathered at the Def Con hacker conference that the spy agency "absolutely" does not collect data from and maintain files on American citizens.

ENGADGET: Former NSA official says agency collects Americans' web data, director denies charges