What Does = Do? - Understanding Python Assignment Operations

Explore the intricate workings of Python's assignment operator in this 29-minute conference talk from EuroPython 2025. Delve deep into what actually occurs behind the scenes when you use the = sign in Python code, discovering that the answer varies significantly depending on the context. Examine the differences between assigning values to variables, mutating existing values, and assigning to attributes. Navigate through Python's variable scopes, analyze byte codes, and understand descriptors to gain a comprehensive understanding of assignment operations. Develop a thorough appreciation for the complex processes that Python executes when performing seemingly simple assignment operations, revealing the sophisticated mechanisms that make this fundamental programming concept work seamlessly.