Python內建函數(28)——hash,python內建28hash

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Python內建函數(28)——hash,python內建28hash

英文文檔:

hash(object)Return the hash value of the object (if it has one). Hash values are integers. They are used to quickly compare dictionary keys during a dictionary lookup. Numeric values that compare equal have the same hash value (even if they are of different types, as is the case for 1 and 1.0).

 

說明:  

  1. 返回對象的雜湊值,用整數表示。雜湊值在字典尋找時,可用於快速比較鍵的值。

>>> hash('good good study')1032709256

  2. 相等的數值,即使類型不一致,計算的雜湊值是一樣的。

>>> 1.0 == 1True>>> hash(1.0)1>>> hash(1)1>>> hash(1.0000)1

 

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