Python Import Module source code processing logic denoted __python

The total entrance is load_module.

The imported file has a py file, go load_source_module

1. Get the latest time of the py file

2. Try to open PYc, open failed, then recompile, open successfully, from the PYc Inside Out magic and timestamp, there is a different, recompile pyc. If all the same, the code snippet is read from PYC.

3. PYc Open or magic, timestamp proof fails, recompile PYC.

3.1 On the py file for AST parsing, return to Pycodeobject, first open PYc, in the open file description through Fdopen converted to file operation pointer, then write magic, timestamp, code.

4. Executing code

4.1 Code is from code read from PYC

The 4.2 code comes from the code after the AST return to the PY

The imported module does not have a py, only the PYc file. Go Load_compiled_module