【python】字典的get方法

字典的get方法是安全的

    action = input_dict.get("action")

分析

• 不会引起崩溃
  No, the code won’t crash if these fields are missing. The .get() method is used specifically to safely retrieve values from dictionaries without raising exceptions when keys don’t exist. If the "action " or “task_id” keys are missing from input_dict, the variables will simply be assigned None.
• 如果没有，返回None

Looking at the rest of the function, these variables are only used for logging purposes (in the print statements) and aren’t passed to the shedule_input_song function or used in any operations that would cause exceptions if they were None.

字典的get()方法是安全的访问方式，当键不存在时不会引发异常，而是返回None。例如input_dict.get(“action”)在缺少"action"键时会返回None而不会崩溃。这种特性特别适合用于日志记录等场景，当某些字段缺失时程序仍能继续运行，不会影响后续操作。