https://github.com/EddieIvan01/pker

Automatically converts Python source code to Pickle opcode
https://github.com/EddieIvan01/pker

Last synced: 8 days ago
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Automatically converts Python source code to Pickle opcode

• Host: GitHub
• URL: https://github.com/EddieIvan01/pker
• Owner: EddieIvan01
• Created: 2019-12-27T15:09:16.000Z (almost 5 years ago)
• Default Branch: master
• Last Pushed: 2020-10-20T05:27:19.000Z (about 4 years ago)
• Last Synced: 2024-08-02T15:35:47.669Z (3 months ago)
• Language: Python
• Homepage: https://xz.aliyun.com/t/7012
• Size: 11.7 KB
• Stars: 118
• Watchers: 2
• Forks: 8
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# pker

Tools for converting Python source code to Pickle opcode automatically, see `https://xz.aliyun.com/t/7012`

## Usage

Write code with normal Python syntax: 

```python

i = 0

s = 'id'

lst = [i]

tpl = (0,)

dct = {tpl: 0}

system = GLOBAL('os', 'system')

system(s)

return

```

```

$ python3 pker.py < x

b"I0\np0\n0S'id'\np1\n0(g0\nlp2\n0(I0\ntp3\n0(g3\nI0\ndp4\n0cos\nsystem\np5\n0g5\n(g1\ntR."

```

***

Nested complex expressions are ok

```python

getattr = GLOBAL('__builtin__', 'getattr')

get = getattr(GLOBAL('__builtin__', 'dict'), 'get')

__builtins__ = get(GLOBAL('__builtin__', 'globals')(), '__builtins__')

f = getattr(__builtins__, 'getattr')(__builtins__, 'getattr')(__builtins__, 'getattr')(__builtins__, 'getattr')(__builtins__, 'getattr')

sin = GLOBAL('math', 'sin')

k = {sin(sin(sin(sin(sin(1))))): {(1, 2): [0, f]}}

return k

```

```

$ python3 pker.py < x

b"c__builtin__\ngetattr\np0\n0g0\n(c__builtin__\ndict\nS'get'\ntRp1\n0g1\n(c__builtin__\nglobals\n(tRS'__builtins__'\ntRp2\n0g0\n(g2\nS'getattr'\ntR(g2\nS'getattr'\ntR(g2\nS'getattr'\ntR(g2\nS'getattr'\ntR(g2\nS'getattr'\ntRp3\n0cmath\nsin\np4\n0(g4\n(g4\n(g4\n(g4\n(g4\n(I1\ntRtRtRtRtR((I1\nI2\nt(I0\ng3\nlddp5\n0g5\n."

$ python3 pker.py < x | python3 ../test.py

{0.5871809965734309: {(1, 2): [0, ]}}

```

***

The differences from normal Python code are: 

+ there are 3 built-in macros

  ```

  GLOBAL('os', 'system')             =>  cos\nsystem\n

  INST('os', 'system', 'ls')         =>  (S'ls'\nios\nsystem\n

  OBJ(GLOBAL('os', 'system'), 'ls')  =>  (cos\nsystem\nS'ls'\no

  ```

+ `return` expression could be used outside of the function

  ```

  var = 1

  return var

  ```

  ```

  return           =>  .

  return var       =>  g_\n.

  return 1         =>  I1\n.

  ```

Examples are in pker/test