In Python, the members of classes indicated with a leading underscore is

Question

BlackTom AI · Accepted Answer

Question restatement: In Python, the members of classes indicated with a leading underscore is

Options:
1) A normal member, indicated as protected by convention
2) A member that is accessible only to classes inheriting from it
3) A member that is not accessible outside of class even for those that inherit from it
4) You cannot use a leading underscore

Analysis:
Option 1: 'A normal member, indicated as protected by convention' — This is the correct interpretation. In Python, a single leading underscore on an attribute or method (for example, _value) is a convention signaling that it is intended for internal or protected use, i.e., by convention it is not part of the public API. This is not enforced by the language, but rather a programmer-guided hint to users of the class.
Option 2: 'A member that is accessible only to classes inheriting from it' — This describes true access control like protected access in languages that enforce it. Python does not enforce access restrictions based on inheritance; any code can access a member starting with a single underscore. The presence of the underscore is only a convention, not a rule.
Option 3: 'A member that is not accessible outside of class even for those that inherit from it' — This would imply strict access control, which Python does not implement with a single underscore. In Python, such a member remains accessible to external code; the underscore is a hint, not a barrier. If stricter access were needed, name mangling with double underscores would be involved, which is a different mechanism.
Option 4: 'You cannot use a leading underscore' — This is false. Python allows leading underscores in identifiers; they are commonly used to indicate private or protected-like members by convention.

Summary: The only statement aligning with Python’s convention is that a leading underscore marks a member as being protected by convention, not by language-enforced access control. The other statements misstate how Python handles visibility and access to such members.

In Python, the members of classes indicated with a leading underscore is单项选择题

类似问题

Question at position 8 An excess of growth hormone (GH) before puberty can result in the development ofgigantism.Graves' disease.acromegaly.pituitary dwarfism.Clear my selection

Question at position 6 The most abundant supporting cells in the central nervous system are called Question Blank 1 of 1[input].

Question at position 5 In the eye, the lens functions tofocus light on the retina at the back of the eye.protect the surface of the eye.increase vision in low-light conditions.move the eye side to side.Clear my selection

Question at position 4 Olfactory (odor) receptors are chemoreceptors. TrueFalse

If the pKa of HCHO2 is 3.74 and the pH of an HCHO2/NaCHO2 solution is 3.00, which of the following is TRUE?

Identify the missing particle in the following nuclear equation: 92 236 𝑈 → 38 90 𝑆 𝑟 + ? + 2 0 1 𝑛 + 4 0 0 𝑔

Which type of radioactivity will affect the mass of the isotope the least?

Determine the binding energy of an O-16 nucleus. The O-16 nucleus has a mass of 15.9905 amu. A proton has a mass of 1.00728 amu, a neutron has a mass of 1.008665 amu, and 1 amu is equivalent to 931 MeV of energy.

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单