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3 Nov 2014 The python interpreter is stack-based, and to understand the dataflow, we need to know what the stack effect is of each instruction. Learn more. The disassemble function in the dis module shows how to do that. It will actually provide the following output from our previous code example: 2 0 LOAD_CONST
You are trying to disassemble a string containing source code, but that's not supported by dis.dis in Python 2. With a string argument, it treats the string as if it contained byte code (see the function disassemble_string in dis.py ). So you are seeing nonsensical output based on misinterpreting source code as
Note the 2 on the first line; that's the line number in the original source that contains the Python code that was used for these instructions. Python code objects have co_lnotab and co_firstlineno attributes that let you map bytecodes back to line numbers in the original source. dis does this for you when
23 Aug 2016
14 Aug 2013 Last week at Hacker School I did a quick presentation on python bytecode and the dis module. The disassembler is a very powerful tool with a gentle learning curve – that is, you can get a fair amount out of it without really knowing much about what's going on. This post is a quick introduction to how and
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4 Oct 2016 Insight into Python bytecode disassembly with the dis module.
The dis module supports the analysis of CPython bytecode by disassembling it. The CPython bytecode which this module takes as an input is defined in the file Include/opcode.h and used by the compiler and the interpreter. CPython implementation detail: Bytecode is an implementation detail of the CPython interpreter!
The dis module includes functions for working with Python bytecode by “disassembling" it into a more human-readable form. Reviewing the bytecodes being executed by the interpreter is a good way to hand-tune tight loops and perform other kinds of optimizations. It is also useful for finding race conditions in multi-threaded
README.md. RustPython. A Python interpreter written in Rust. Installation. bash init_env.sh. Run ./test.sh
# compile and run ./test.sh
--bytecode # print the bytecode in JSON ./test.sh
--dis # Run python -m dis. Manual. Given a python file test.py python compile_code.py test.py
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