float() — Advanced Examples

Converts a value to a floating-point number

float() protocol implementation

Implementing the protocol that float() uses under the hood.

python

# float() - implementing the protocol
class Custom:
    def __float__(self):
        return "custom result"

obj = Custom()
print(float(obj))

Understanding the dunder methods that float() calls helps you customize behavior for your own classes.

Handling unusual inputs and edge cases.

python

# float() edge cases
print("Edge case handling for float()")

# Type checking
print(type(42))

Knowing these edge cases prevents subtle bugs in production.

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