The key to dealing with API authentication is to understand and use the authentication method correctly. 1. APIKey is the simplest authentication method, usually placed in the request header or URL parameters; 2. BasicAuth uses username and password for Base64 encoding transmission, which is suitable for internal systems; 3. OAuth2 needs to obtain the token first through client_id and client_secret, and then bring the BearerToken in the request header; 4. In order to deal with the token expiration, the token management class can be encapsulated and automatically refreshed the token; in short, selecting the appropriate method according to the document and safely storing the key information is the key.

In Python, the method of traversing tuples with for loops includes directly iterating over elements, getting indexes and elements at the same time, and processing nested tuples. 1. Use the for loop directly to access each element in sequence without managing the index; 2. Use enumerate() to get the index and value at the same time. The default index is 0, and the start parameter can also be specified; 3. Nested tuples can be unpacked in the loop, but it is necessary to ensure that the subtuple structure is consistent, otherwise an unpacking error will be raised; in addition, the tuple is immutable and the content cannot be modified in the loop. Unwanted values can be ignored by \_. It is recommended to check whether the tuple is empty before traversing to avoid errors.

How to efficiently handle large JSON files in Python? 1. Use the ijson library to stream and avoid memory overflow through item-by-item parsing; 2. If it is in JSONLines format, you can read it line by line and process it with json.loads(); 3. Or split the large file into small pieces and then process it separately. These methods effectively solve the memory limitation problem and are suitable for different scenarios.

ifelse is the infrastructure used in Python for conditional judgment, and different code blocks are executed through the authenticity of the condition. It supports the use of elif to add branches when multi-condition judgment, and indentation is the syntax key; if num=15, the program outputs "this number is greater than 10"; if the assignment logic is required, ternary operators such as status="adult"ifage>=18else"minor" can be used. 1. Ifelse selects the execution path according to the true or false conditions; 2. Elif can add multiple condition branches; 3. Indentation determines the code's ownership, errors will lead to exceptions; 4. The ternary operator is suitable for simple assignment scenarios.

In Python, although there is no built-in final keyword, it can simulate unsurpassable methods through name rewriting, runtime exceptions, decorators, etc. 1. Use double underscore prefix to trigger name rewriting, making it difficult for subclasses to overwrite methods; 2. judge the caller type in the method and throw an exception to prevent subclass redefinition; 3. Use a custom decorator to mark the method as final, and check it in combination with metaclass or class decorator; 4. The behavior can be encapsulated as property attributes to reduce the possibility of being modified. These methods provide varying degrees of protection, but none of them completely restrict the coverage behavior.

VSCode has built-in Git function, which can complete most daily version control tasks directly in the editor. Its core answers and detailed descriptions are as follows: 1. Provide sidebar integration, view and modify files, temporarily store changes and resolve conflicts through Git icons; 2. Support line-level change tracking, showing who modified the code when; 3. Simple operation of submission and synchronization, input shortcut keys after submitting information, and can be pushed or pulled from the menu; 4. Easy branch switching, click the status bar branch indicator to select local or remote branches; 5. Support remote management, add remote warehouses through the command panel and automatically set up upstream branches. These features cover 90% of daily use scenarios without additional tools.

C is usually faster than Python, especially in compute-intensive tasks. 1.C is a compiled language that directly runs machine code, while Python executes while interpreting and executing, which brings additional overhead; 2.C determines the type during compilation and manages memory manually, which is conducive to CPU optimization, and Python dynamic typing and garbage collection increase burden; 3. It is recommended to be used for high-performance scenarios such as game engines and embedded systems. Python is suitable for data analysis and rapid development scenarios with priority efficiency; 4. Performance testing is recommended to use time tools, eliminate I/O interference, and average values multiple times to obtain accurate results.

Use keyword-only parameters to force explicitly specify parameter names, such as configuring class functions or improving readability. When defining, use the position parameters and the keyword-only parameters, and the parameters must be passed in the keyword. Common uses include configuration options, backward compatibility, and improved readability. For example, in defgreet(name,, greeting="Hello"), greeting is a keyword-only parameter with default value, and greet("Alice", greeting="Hi") must be written when calling. You can also add flexibility in combination with default values, such as form