not all arguments converted during string formatting
时间: 2023-10-19 22:03:15 浏览: 51
This error message occurs when there are not enough arguments provided for the number of placeholders in a string formatting operation. For example, if a string contains two placeholders but only one argument is provided, the error will occur.
Here is an example of code that can cause this error:
```
name = "John"
age = 32
print("My name is {} and I am {} years old.")
```
In this case, the string contains two placeholders but only two arguments are provided. The correct code should be:
```
name = "John"
age = 32
print("My name is {} and I am {} years old.".format(name, age))
```
This will correctly substitute the values of `name` and `age` into the string.
Another common cause of this error is using the wrong type of placeholder. For example, if a string contains a placeholder for an integer but a string is provided, the error will occur.
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