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lv_micropython/tests/basics/builtin_override.py

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py: Allow builtins to be overridden. This patch adds a configuration option (MICROPY_CAN_OVERRIDE_BUILTINS) which, when enabled, allows to override all names within the builtins module. A builtins override dict is created the first time the user assigns to a name in the builtins model, and then that dict is searched first on subsequent lookups. Note that this implementation doesn't allow deleting of names. This patch also does some refactoring of builtins code, creating the modbuiltins.c file. Addresses issue #959.
2014-12-09 16:19:48 +00:00
# test overriding builtins
import builtins
# override generic builtin
builtins.abs = lambda x: x + 1
print(abs(1))
# __build_class__ is handled in a special way
builtins.__build_class__ = lambda x, y: ('class', y)
class A:
pass
print(A)
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