if "__main__" == __name__:
时间: 2023-10-25 12:14:59 浏览: 104
If "__main__" == __name__:, it is a conditional statement commonly used in Python scripts. It checks if the current module is being run directly as the main program. In other words, it ensures that certain code is only executed when the module is run directly and not when it is imported as a module in another script.
This check is useful when you have some code that should only run when the script is executed directly, such as initializing variables, defining functions, or running specific operations. When the module is imported, this code block will be skipped.
Here's an example to illustrate its usage:
```python
def main():
# code to be executed when the script is run directly
pass
if "__main__" == __name__:
main()
```
In this example, the `main()` function will only be executed if the script is run directly. If the module is imported by another script, the `main()` function will not be executed.
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