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c1d9bbc345
__bool__() and __len__() are just the same as __neg__() or __invert__(), and require efficient dispatching implementation (not requiring search/lookup). type->unary_op() is just the right choice for this short of adding standalone virtual method(s) to already big mp_obj_type_t structure.
37 lines
494 B
Python
37 lines
494 B
Python
# Test true-ish value handling
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if not False:
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print("False")
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if not None:
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print("None")
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if not 0:
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print("0")
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if not 0.0:
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print("float 0")
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if not 0+0j:
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print("complex 0")
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if not "":
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print("Empty string")
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if "foo":
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print("Non-empty string")
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if not ():
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print("Empty tuple")
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if ("",):
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print("Non-empty tuple")
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if not []:
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print("Empty list")
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if [0]:
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print("Non-empty list")
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if not {}:
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print("Empty dict")
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if {0:0}:
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print("Non-empty dict")
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