Basic Python learning tutorial (learning Python) -- 2.2.1 variable parsing in Python

 

 

1. >>> Help (id)

 

1. Help on built-in function id in module _ builtin __:
3. Id (...)
4. Id (object)-> integer
6. Return the identity of an object. This is guaranteed to be unique
7. Simultaneously existing objects. (Hint: it's the object's memory address .)
8. (END)

 

 

1. >>> X = 5
2. >>> X
3. 5
4. >>> Y = 5
5. >>> Y
6. 5

 

1. >>> X = 5
2. >>> Y = 5
3. >>> X
4. 5
5. >>> Y
6. 5
7. >>> Id (x)
8. 163705520
9. >>> Id (y)
10. 163705520
11. >>> Y = 6
12. >>> Id (y)
13. 153928356

The two return values are equal, so we can sum up that in Python, the variable "points" to a memory, which is the same as in C! When y is assigned another value, the id of y changes, which proves that the statement "Python variable pointing to memory" is correct!

 

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