python dictionary walkthrough welcome menu display 200 310

A user inputs an instruction corresponding to the print content

User instructions	Display content
1	New users
2	All inquiries
3	Users looking for Charles
4	exit the program

• Use an if statement to achieve functional
• Use a dictionary to traverse realize the function

User inputs an instruction to start the function corresponding to

User instructions	Display content
1	New users
2	All inquiries
3	Users looking for Charles
4	exit the program

• A clear relationship with the entity identifier
• Function is the identifier
• Meaning identifier identifier points
• You need to define the function before they can point to