#------------------------------------------------------------------------------
# $File: python,v 1.45 2022/07/24 23:59:37 christos Exp $
# python:  file(1) magic for python
#
# Outlook puts """ too for urgent messages
# From: David Necas <[email protected]>
# often the module starts with a multiline string
0       string/t        """     Python script text executable
# MAGIC as specified in Python/import.c (1.0 to 3.7)
# and in Lib/importlib/_bootstrap_external.py (3.5+)
# two bytes of magic followed by "\r\n" in little endian order
0       belong          0x02099900      python 1.0 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x03099900      python 1.1/1.2 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x892e0d0a      python 1.3 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x04170d0a      python 1.4 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x994e0d0a      python 1.5 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xfcc40d0a      python 1.6 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xfdc40d0a      python 1.6 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x87c60d0a      python 2.0 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x88c60d0a      python 2.0 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x2aeb0d0a      python 2.1 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x2beb0d0a      python 2.1 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x2ded0d0a      python 2.2 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x2eed0d0a      python 2.2 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x3bf20d0a      python 2.3 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x3cf20d0a      python 2.3 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x45f20d0a      python 2.3 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x59f20d0a      python 2.4 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x63f20d0a      python 2.4 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x6df20d0a      python 2.4 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x6ef20d0a      python 2.4 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x77f20d0a      python 2.5 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x81f20d0a      python 2.5 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x8bf20d0a      python 2.5 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x8cf20d0a      python 2.5 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x95f20d0a      python 2.5 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x9ff20d0a      python 2.5 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xa9f20d0a      python 2.5 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xb3f20d0a      python 2.5 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xb4f20d0a      python 2.5 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xc7f20d0a      python 2.6 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xd1f20d0a      python 2.6 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xd2f20d0a      python 2.6 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xdbf20d0a      python 2.7 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xe5f20d0a      python 2.7 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xeff20d0a      python 2.7 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xf9f20d0a      python 2.7 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x03f30d0a      python 2.7 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x04f30d0a      python 2.7 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x0af30d0a      PyPy2.7 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xb80b0d0a      python 3.0 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xc20b0d0a      python 3.0 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xcc0b0d0a      python 3.0 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xd60b0d0a      python 3.0 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xe00b0d0a      python 3.0 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xea0b0d0a      python 3.0 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xf40b0d0a      python 3.0 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xf50b0d0a      python 3.0 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xff0b0d0a      python 3.0 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x090c0d0a      python 3.0 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x130c0d0a      python 3.0 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x1d0c0d0a      python 3.0 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x1f0c0d0a      python 3.0 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x270c0d0a      python 3.0 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x3b0c0d0a      python 3.0 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x450c0d0a      python 3.1 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x4f0c0d0a      python 3.1 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x580c0d0a      python 3.2 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x620c0d0a      python 3.2 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x6c0c0d0a      python 3.2 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x760c0d0a      python 3.3 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x800c0d0a      python 3.3 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x8a0c0d0a      python 3.3 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x940c0d0a      python 3.3 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x9e0c0d0a      python 3.3 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xb20c0d0a      python 3.4 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xbc0c0d0a      python 3.4 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xc60c0d0a      python 3.4 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xd00c0d0a      python 3.4 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xda0c0d0a      python 3.4 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xe40c0d0a      python 3.4 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xee0c0d0a      python 3.4 byte-compiled
!:mime application/x-bytecode.python
0       belong          0xf80c0d0a      python 3.5.1- byte-compiled
!:mime application/x-bytecode.python
0       belong          0x020d0d0a      python 3.5.1- byte-compiled
!:mime application/x-bytecode.python
0       belong          0x0c0d0d0a      python 3.5.1- byte-compiled
!:mime application/x-bytecode.python
0       belong          0x160d0d0a      python 3.5.1- byte-compiled
!:mime application/x-bytecode.python
0       belong          0x170d0d0a      python 3.5.2+ byte-compiled
!:mime application/x-bytecode.python
0       belong          0x200d0d0a      python 3.6 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x210d0d0a      python 3.6 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x2a0d0d0a      python 3.6 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x2b0d0d0a      python 3.6 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x2c0d0d0a      python 3.6 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x2d0d0d0a      python 3.6 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x2f0d0d0a      python 3.6 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x300d0d0a      python 3.6 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x310d0d0a      python 3.6 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x320d0d0a      python 3.6 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x330d0d0a      python 3.6 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x3e0d0d0a      python 3.7 byte-compiled
!:mime application/x-bytecode.python
0       belong          0x3f0d0d0a      python 3.7 byte-compiled
!:mime application/x-bytecode.python

# magic 3392+ implements PEP 552: Deterministic pycs
0       name            pyc-pep552
# the flag field determines how .pyc validity is checked
>4      ulelong&1       0               timestamp-based,
>>8     uledate         x               .py timestamp: %s UTC,
>>12    ulelong         x               .py size: %d bytes
>4      ulelong&1       !0              hash-based, check-source flag
>>4     ulelong&2       0               unset,
>>4     ulelong&2       !0              set,
>>8     ulequad         x               hash: 0x%llx

# uleshort magic followed by \x0d\0xa
2               string          \x0d\x0a
# extra check: only two bits of flag field are currently used
>4              ulelong         <0x4
# \x0d as part of magic should suffice till Python 3.14 (magic 3600)
>>1             ubyte           0x0d            Byte-compiled Python module for
!:mime application/x-bytecode.python
# now look at the magic number to determine the version
>>>0            uleshort        <3400           CPython 3.7,
>>>0            default         x
>>>>0           uleshort        <3420           CPython 3.8,
>>>>0           default         x
>>>>>0          uleshort        <3430           CPython 3.9,
>>>>>0          default         x
>>>>>>0         uleshort        <3450           CPython 3.10,
>>>>>>0         default         x
>>>>>>>0        uleshort        <3500           CPython 3.11,
>>>>>>>0        default         x               CPython 3.12 or newer,
>>>0            use             pyc-pep552
>>0             uleshort        240             Byte-compiled Python module for PyPy3.7,
!:mime application/x-bytecode.python
>>>0            use             pyc-pep552
>>0             uleshort        256             Byte-compiled Python module for PyPy3.8,
!:mime application/x-bytecode.python
>>>0            use             pyc-pep552
>>0             uleshort        336             Byte-compiled Python module for PyPy3.9,
!:mime application/x-bytecode.python
>>>0            use             pyc-pep552

0       search/1/w      #!\040/usr/bin/python   Python script text executable
!:strength + 15
!:mime text/x-script.python
0       search/1/w      #!\040/usr/local/bin/python     Python script text executable
!:strength + 15
!:mime text/x-script.python
0       search/10/w     #!\040/usr/bin/env\040python    Python script text executable
!:strength + 15
!:mime text/x-script.python


# from module.submodule import func1, func2
0       search/8192     import
>0      regex           \^from[\040\t]+([A-Za-z0-9_]|\\.)+[\040\t]+import.*$    Python script text executable
!:strength + 15
!:mime text/x-script.python

# def __init__ (self, ...):
0       search/4096     def\ __init__
>&0     search/64 self  Python script text executable
!:strength + 15
!:mime text/x-script.python

# if __name__ == "__main__":
0 search/4096 if\ __name__
>&0 search/64 '__main__'        Python script text executable
>&0 search/64 "__main__"        Python script text executable
!:strength + 15
!:mime text/x-script.python

# import module [as abrev]
0       search/8192     import
>0      regex   \^import\ [_[:alpha:]]+\ as\ [[:alpha:]][[:space:]]*$ Python script text executable
!:mime text/x-script.python

# comments
#0      search/4096     '''
#>&0    regex   .*'''$  Python script text executable
#!:mime text/x-script.python

#0      search/4096     """
#>&0    regex   .*"""$  Python script text executable
#!:mime text/x-script.python

# try:
# except: or finally:
# block
0       search/4096     try:
>&0     regex   \^[[:space:]]*except.*:$        Python script text executable
!:strength + 15
!:mime text/x-script.python
>&0     search/4096     finally:        Python script text executable
!:mime text/x-script.python

# class name[(base classes,)]: [pass]
0       search/8192     class
>0      regex   \^class\ [_[:alpha:]]+(\\(.*\\))?(\ )*:([\ \t]+pass)?$          Python script text executable
!:strength + 15
!:mime text/x-script.python

# def name(*args, **kwargs):
0       search/8192     def\
>0      regex    \^[[:space:]]{0,50}def\ {1,50}[_a-zA-Z]{1,100}
>>&0    regex    \\(([[:alpha:]*_,\ ]){0,255}\\):$ Python script text executable
!:strength + 15
!:mime text/x-script.python

# https://numpy.org/devdocs/reference/generated/numpy.lib.format.html
0       string  \223NUMPY               NumPy data file
!:mime  application/x-numpy-data
>6      byte    x                       \b, version %d
>7      byte    x                       \b.%d
#>8     leshort x                       \b, header length=%d
>10     string  x                       \b, description %s

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