英文:
Issue with converting object to float in Python
问题
遇到了将对象转换为浮点数的问题。我有一个包含以对象形式存储的数值的变量。然而，当我尝试使用float()函数将其转换为浮点数时，我收到了一个错误消息。以下是我的代码示例：
value = "3.14"
float_value = float(value)
我收到的错误消息是：
ValueError: 无法将字符串转换为浮点数：'3.14'
我已经验证了该值是有效浮点数的字符串表示。可能是什么原因导致了这个错误，我如何成功地将对象转换为浮点数？
英文:
I am working on a Python project and encountered an issue with converting an object to a float. I have a variable that contains a numeric value stored as an object. However, when I try to convert it to a float using the float() function, I get an error. Here's a sample of my code:
value = "3.14"
float_value = float(value)
The error message I receive is:
ValueError: could not convert string to float: '3.14'
I have verified that the value is a string representation of a valid float. What could be causing this error, and how can I successfully convert the object to a float?
答案1
得分: 1
你可以按照以下方式模拟这个问题：
value = '3․14'
float(value)
这将生成：
ValueError: could not convert string to float: '3․14'
你需要复制粘贴这里显示的代码 - 即不要重新输入。
这里的问题是看起来像一个句点的东西并不是你想象的那样。实际上，它是 '\u2024'，是一个 Unicode 的 One Dot Leader。
英文:
You can emulate this problem as follows:
value = '3․14'
float(value)
This will generate:
ValueError: could not convert string to float: '3․14'
You will need to copy'n'paste the code shown here - i.e., don't re-type it.
The issue here is that what looks like a Full Stop isn't what you think it is. It's actually '\u2024' which is a Unicode One Dot Leader
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