How Python Reads Code
Ever wonder how Python actually "understands" your code? The process follows a fascinating architectural journey:
1. Lexical Analysis: Python first breaks your text into small, meaningful parts called tokens, such as names, operators, and numbers.
2. Syntactic Parsing: These tokens are organized into an Abstract Syntax Tree (AST), which acts as a structural map of your program's logic.
3. Compilation: The AST is converted into bytecode, a compact, platform-independent set of instructions optimized for execution.
4. Execution: The Python Virtual Machine (PVM) fetches and runs these instructions one by one in a high-speed "evaluation loop".
Python even saves time by caching this bytecode in .pyc files within a _pycache_ folder, allowing for much faster startup times on your next run!
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