Python Learning Note 8: Exception handling

First, exception handling

In the process of running the program, you will always encounter a variety of errors.

Program An error stopped running, then we can not let the program stop running it, this time we need to catch the exception, by catching the exception, we do the corresponding processing.

As below, write the paragraph code, take the value in the dictionary, when the dictionary key does not exist, will error

　　

So, we do an exception capture of code print (Dic[choice]) that might be wrong

　　

　　

Ii. Common anomaly Information

　　

　　

Python Learning Note 8: Exception handling