AssertionError
时间: 2024-01-26 10:03:00 浏览: 25
The AssertionError is a Python exception that is raised when an assertion statement fails. Assertion statements are used to check that a certain condition is true and if it is not, an AssertionError is raised. The assertion statement takes an expression that is expected to be true and if it is false, the AssertionError is raised.
For example, if we have an assertion statement that checks if a variable x is equal to 5 and it is not, an AssertionError will be raised:
```
x = 6
assert x == 5, "x should be 5"
```
This will raise an AssertionError with the message "x should be 5". The AssertionError can be caught using a try-except block and appropriate action can be taken.
```
try:
x = 6
assert x == 5, "x should be 5"
except AssertionError as e:
print(e)
```
This will output the message "x should be 5".