Message285773
Example:
---
def func(x, y):
print(x, y)
def proxy2(func, **kw):
func(**kw)
def proxy1(func, **kw):
proxy2(func, **kw)
---
The "proxy2(func, **kw)" call in proxy1() is currently inefficient: _PyFunction_FastCallDict() converts the dictionary into a C array [key1, value1, key2, value2, ...] and then _PyEval_EvalCodeWithName() rebuilds the dictionary from the C array.
Since "func(*args, **kw)" proxies are common in Python, especially to call the parent constructor when overriding __init__, I think that it would be interesting to optimize this code path.
I first expected that it was a regression of FASTCALL, but Python < 3.6 doesn't optimize this code neither. |
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Date |
User |
Action |
Args |
2017-01-19 11:33:01 | vstinner | set | recipients:
+ vstinner, methane |
2017-01-19 11:33:01 | vstinner | set | messageid: <1484825581.48.0.790581995103.issue29318@psf.upfronthosting.co.za> |
2017-01-19 11:33:01 | vstinner | link | issue29318 messages |
2017-01-19 11:33:00 | vstinner | create | |
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