Lost Your Python Source? – Get it back!¶ Lost your Python source files? But still have the .pyc/.pyo files? Get your sources back! Just send in your .pyc/.pyo file and get the source code mailed back to you within hours! The ‘decompyle’ service converts Python byte-code back into equivalent Python source. It accepts byte-code from any Python version starting with 1.5 up to 2.7. The generated sourc