Detailed introduction to Python's built-in hash function

English document:

##hash<a href="http://www.php.cn/wiki/739.html" target="_blank"></a>(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) .

Instructions: 　

1. Return the hash value of

object, using integer express. Hash values ​​can be used to quickly compare key values ​​during dictionary lookups.

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

　2. For equal values, even if the types are inconsistent, the calculated hash value is the same.

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

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