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⚡️ Speed up function __getattr__ by 87% #24

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⚡️ Speed up function __getattr__ by 87% #24

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23 changes: 15 additions & 8 deletions quantecon/rank_nullspace.py
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,8 @@
import warnings
from . import _rank_nullspace

__warned_names = set()


__all__ = ['rank_est', 'nullspace']

Expand All @@ -16,13 +18,18 @@ def __dir__():
def __getattr__(name):
if name not in __all__:
raise AttributeError(
"`quantecon.rank_nullspace` is deprecated and has no attribute"
f" '{name}'."
)

warnings.warn(f"Please use `{name}` from the `quantecon` namespace, the"
"`quantecon.rank_nullspace` namespace is deprecated. You can"
f" use following instead:\n `from quantecon import {name}`.",
category=DeprecationWarning, stacklevel=2)
"`quantecon.rank_nullspace` is deprecated and has no attribute"
f" '{name}'."
)

# Only warn once per attribute (per interpreter session)
if name not in __warned_names:
warnings.warn(
f"Please use `{name}` from the `quantecon` namespace, the"
"`quantecon.rank_nullspace` namespace is deprecated. You can"
f" use following instead:\n `from quantecon import {name}`.",
category=DeprecationWarning, stacklevel=2
)
__warned_names.add(name)

return getattr(_rank_nullspace, name)