format argument 2 must be str not float

The error message "format() argument 2 must be str, not float" means that you are trying to pass a float value as the second argument to the format() function, but it expects a string.

Here's an example of how you might encounter this error:

age = 25
height = 1.75

message = "I am {} years old and my height is {} meters".format(age, height)
print(message)

In this example, the variable age is an integer and height is a float. When trying to format the message using the format() function, the error will occur because the second argument (height) is a float value instead of a string.

To fix this error, you need to convert the float value to a string before passing it to the format() function. You can do this using the str() function:

age = 25
height = 1.75

message = "I am {} years old and my height is {} meters".format(age, str(height))
print(message)

By converting the height variable to a string using str(height), you can successfully format the message without encountering the error.