maggyero/desugar

Unravelling Python source code

desugar

Unravelling Python source code.

Unravelled syntax

1. obj.attr ➠ builtins.getattr(obj, "attr") (including object.__getattribute__())
2. a + b ➠ operator.__add__(a, b)
3. a - b ➠ operator.__sub__(a, b)
4. a * b ➠ operator.__mul__(a, b)
5. a @ b ➠ operator.__matmul__(a, b)
6. a / b ➠ operator.__truediv__(a, b)
7. a // b ➠ operator.__floordiv__(a, b)
8. a % b ➠ operator.__mod__(a, b)
9. a ** b ➠ operator.__pow__(a, b)
10. a << b ➠ operator.__lshift__(a, b)
11. a >> b ➠ operator.__rshift__(a, b)
12. a & b ➠ operator.__and__(a, b)
13. a ^ b ➠ operator.__xor__(a, b)
14. a | b ➠ operator.__or__(a, b)
15. a += b ➠ a = operator.__iadd__(a, b)
16. a -= b ➠ a = operator.__isub__(a, b)
17. a *= b ➠ a = operator.__imul__(a, b)
18. a @= b ➠ a = operator.__imatmul__(a, b)
19. a /= b ➠ a = operator.__itruediv__(a, b)
20. a //= b ➠ a = operator.__ifloordiv__(a, b)
21. a %= b ➠ a = operator.__imod__(a, b)
22. a **= b ➠ a = operator.__ipow__(a, b)
23. a <<= b ➠ a = operator.__ilshift__(a, b)
24. a >>= b ➠ a = operator.__irshift__(a, b)
25. a &= b ➠ a = operator.__iand__(a, b)
26. a ^= b ➠ a = operator.__ixor__(a, b)
27. a |= b ➠ a = operator.__ior__(a, b)
28. ~ a ➠ operator.__invert__(a)
29. - a ➠ operator.__neg__(a)
30. + a ➠ operator.__pos__(a)
31. a == b ➠ operator.__eq__(a, b) (including object.__eq__())
32. a != b ➠ operator.__ne__(a, b) (including object.__ne__())
33. a < b ➠ operator.__lt__(a, b)
34. a <= b ➠ operator.__le__(a, b)
35. a > b ➠ operator.__gt__(a, b)
36. a >= b ➠ operator.__ge__(a, b)

Syntax to (potentially) unravel

Keywords

Taken from the keyword module.

1. None

2. False~

3. True~

4. and~

5. or~

6. assert*

7. await~

8. break

9. continue

10. pass*

11. def

12. class*

13. async~

14. lambda~

15. if

16. elif

17. else

18. while

19. for*

20. with*

21. try

22. except

23. finally

24. global

25. nonlocal

26. import*

27. from*

28. as

29. del

30. not

31. in*

32. is*

33. raise

34. return

35. yield

Tokens

Taken from the token module.

1. =

2. :=

3. []*

4. {}*

5. ()

6. ,

7. :

8. ;*

9. ->*

10. ...*

Literals

The list below ignores literals which are represented via syntax above. For instance, lists are ignored as they are represented by [] tokens.

1. Bytes (b, r)
2. Strings (u, f, r; single line, multi-line)
3. Integers (base-10, b, o, x)
4. Floats (point, e)
5. Complex/imaginary numbers