mingshe 0.4.0

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MíngShé

A better Python superset language.

“鲜山多金玉，无草木，鲜水出焉，而北流注于伊水。其中多鸣蛇，其状如蛇而四翼，其音如磬，见则其邑大旱”——《山海经》

Install

pip install mingshe

Example

Write some code in main.she, then run mingshe ./main.she to execute code.

10 |> range |> map(pow(?, 2), ?) |> list |> print

You can also use mingshe --compile ./main.she to generate python file.

Extended syntax

Pipe

Example:

range(10) |> sum |> print

Compile to:

print(sum(range(10)))

Priority

The priority of |> is lower than | and higher than comparison operations (in, not in, is, is not, <, <=, >, >=, !=, ==).

Conditional

Example:

a ? b : c

Compile to:

b if a else c

Priority

a ? b: c has the same priority as b if a else c.

Partial

Example:

square = pow(?, 2)

Compile to:

(lambda pow: lambda _0, /: pow(_0, 2))(pow)

Nullish coalescing

Example:

a ?? b

Compile to:

a if a is not None else b

Priority

?? has the same priority as or.

Note

When you need to use ?? with or, you need to use parentheses in the outer layer, otherwise it will cause a syntax error.

a or b ?? c    # syntax error
(a or b) ?? c  # OK
a or (b ?? c)  # OK