如何避免 If 语句的围墙？

Question

我多次听说这样的编码不是最理想的：

if weapon == "sword":
 print("Knight") 
elif weapon == "katana":
 print("Samurai") 
elif weapon == "axe":
 print("Viking")

如何以最佳方式编写此类代码？

Answer 1

您可以将这些关联存储在字典中

weapons_roles = {
    "sword": "Knight",
    "katana": "Samurai",
    "axe": "Viking"
}

1. 每当密钥不在字典中时，打印一些内容

   print(weapons_roles.get(weapon, "No role"))
   

2. Print a role only if the weapon is known

   if weapon in weapons_roles:
       print(weapons_roles[weapon])