Python 101: bool Result of the Python Code

Result of the Python Code:

bool([]) == bool(None)

The result of this expression is True.

Explanation:

  1. Understanding bool([]):

    • In Python, the bool() function is used to convert a value to a boolean (True or False).
    • An empty list [] is considered a "falsy" value, meaning when converted to a boolean, it evaluates to False.
    • Therefore, bool([]) results in False.
  2. Understanding bool(None):

    • Similarly, None is also considered a "falsy" value in Python.
    • When None is passed to the bool() function, it also evaluates to False.
    • Therefore, bool(None) results in False.
  3. Comparison bool([]) == bool(None):

    • The expression compares the boolean values of an empty list and None.
    • Since both bool([]) and bool(None) evaluate to False, the comparison False == False is True.

Summary:

  • bool([]) results in False.
  • bool(None) results in False.
  • Comparing them with == results in True because False == False is True.

中文解释:

Python 代码结果:

bool([]) == bool(None)

该表达式的结果是 True

解释:

  1. 理解 bool([])

    • 在 Python 中,bool() 函数用于将一个值转换为布尔值(TrueFalse)。
    • 空列表 [] 被视为“假值”(falsy),这意味着当转换为布尔值时,它的值为 False
    • 因此,bool([]) 的结果是 False
  2. 理解 bool(None)

    • 同样,None 在 Python 中也被视为“假值”。
    • None 传递给 bool() 函数时,它也会评估为 False
    • 因此,bool(None) 的结果是 False
  3. 比较 bool([]) == bool(None)

    • 该表达式比较了空列表和 None 的布尔值。
    • 由于 bool([])bool(None) 都评估为 False,所以比较 False == False 结果为 True

总结:

  • bool([]) 的结果是 False
  • bool(None) 的结果是 False
  • == 比较它们的结果是 True,因为 False == FalseTrue

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