The use of the built-in method get in python dictionary

Python dictionary has a built-in method get application. If we need to get the dictionary value, we have two methods, one is through dict['key'], and the other is the dict.get() method.

What I will share with you today is the get() method of the dictionary.

Here we can use the dictionary to make a small game. Assume that the user enters a string in the terminal: "1" or "2" or "3", and the corresponding content is returned. If other characters are entered, "error" is returned.

Some friends here may use if elif else judgment statements to operate. It is indeed possible, but it is more cumbersome. I would like to recommend a dictionary get() method which is very convenient.

info = {'1':'first','2':'second','3':'third'}

number = raw_input('input type you number:')

print info.get( number,'error')

In this way, one line of code get can complete several lines of code for the python judgment statement.