'str' object has no attribute 'length' 啥意思
时间: 2024-01-06 17:05:53 浏览: 183
这个错误意味着字符串对象没有名为'length'的属性。这通常是因为你试图在字符串对象上调用一个不存在的属性或方法。字符串对象的常用属性和方法包括'len()'函数来获取字符串的长度,以及'upper()'和'lower()'方法来将字符串转换为大写或小写。如果你尝试调用一个不存在的属性或方法,Python会引发AttributeError异常。
以下是一个示例,演示了当你尝试在字符串对象上调用'length'属性时会发生什么:
```python
string = "Hello, World!"
print(string.length) # 这里会引发AttributeError异常
```
相关问题
'str' object has no attribute 'size'
当你遇到错误消息"'str' object has no attribute 'size'"时,这意味着你正在尝试在一个字符串对象上调用名为'size'的属性,但是字符串对象并没有这个属性。
在Python中,字符串是不可变的对象,它们没有'size'属性。如果你想获取字符串的长度,可以使用内置函数`len()`来实现。例如:
```python
my_string = "Hello, World!"
length = len(my_string)
print(length) # 输出:13
```
这里,`len()`函数返回了字符串`my_string`的长度,并将其赋值给变量`length`。然后,我们使用`print()`函数将长度打印出来。
'str' object has no attribute 'zifill'
This error is raised when you try to call the `zifill()` method on a string object in Python. However, the `zifill()` method is not a built-in method for strings in Python.
It is possible that you made a typo and meant to call the `zfill()` method instead. The `zfill()` method pads a string with zeros on the left until it reaches a specified length.
For example:
```
my_string = "42"
padded_string = my_string.zfill(5)
print(padded_string) # Output: "00042"
```
If you intended to use the `zifill()` method for a different purpose, you may need to provide more information or context for further assistance.
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