What Really Happens When You Write x = 10

Short summary

Python variables aren't containers—they're names bound to objects. When you write x = 10, Python creates the integer object 10 and binds the name x to it; reassigning x = 20 rebinds the name to a different object without modifying the original. This distinction explains Python's behavior with shared references and the difference between == and is operators.

• •Variables are names referring to objects, not containers storing values
• •Assignment rebinds a name to a different object without modifying the original
• •This model explains mutable object sharing, reference equality, and argument passing

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