python class repr смотреть онлайн

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in python, the __repr__ method is a special method that allows you to define a string representation of an object. it is used to create a human-readable string that represents an instance of a class. this can be especially useful for debugging and introspection, as it provides a way to see the state of an object in a more meaningful way than the default representation provided by str().
in this tutorial, we'll explore the __repr__ method in python with code examples to help you understand its purpose and usage.
the __repr__ method is called when you use the repr() function or when you inspect an object in the python interactive interpreter by simply typing its name and pressing enter. the goal of this method is to return a string that, when passed to the eval() function, would recreate an object with the same state as the original.
here's the basic syntax for defining the __repr__ method in a python class:
in the example above, we've defined a class myclass with a constructor (__init__) that takes a single argument value. the __repr__ method returns a string that includes the class name and the value.
now, let's see how to use this class:
as you can see, when we print the object or use repr(obj), the __repr__ method is called, and it returns a string representation of the object.
debugging: __repr__ is a powerful tool for debugging because it allows you to see the internal state of objects more clearly. when you encounter unexpected behavior, printing an object using repr() can help you understand what's going wrong.
logging: when you log information about objects, it's often more informative to use the __repr__ representation rather than str() representation. this provides more detailed information about the object's state.
readable code: using __repr__ in your classes makes your code more readable for others. they can easily understand the structure and state of your objects without diving into the implementation.
you can customize the __repr__ method to provide a ...