ipython-smart-await
Auto-await coroutine results in the IPython REPL — drive a pure-async API without typing
await everywhere.
When loaded, the extension rewrites each input cell so that expressions which evaluate to a coroutine are awaited automatically on IPython's loop runner.
Install
pip install ipython-smart-await
Usage
%load_ext smart_await
Then, given some async API bound to p:
p.get_pid() # -> awaited automatically (no `await` needed)
a[0] # -> awaited if `a.__getitem__` returns a coroutine
a[0] = 7 # -> routed to `a.setindex(0, 7)` (awaited) when `a` has an async `setindex`
proxy.length # -> awaited if attribute access returns a coroutine (dynamic proxies)
Opting out
Wrap a call in ...( ) to get the raw, un-awaited value:
coro = ...(p.get_pid()) # `coro` is the coroutine itself
Cells that already use await / async constructs are left untouched.
How it works
The extension installs an ast transformer (an IPython AST transformer) that wraps:
- calls (
foo()), subscript reads (a[0]), and attribute reads (a.b) in a helper that awaits the result only if it is a coroutine (non-coroutines pass through unchanged); - single-target subscript assignment (
a[0] = v) into a call that routes to an asyncsetindex(key, value)when the target exposes one, otherwise a normal item assignment — so dicts, lists, numpy arrays, etc. are unaffected.
License
MIT
1 maintainer
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