Python internally represents a float value using the IEEE 754 standard for floating-point arithmetic.

The lifetime of a variable in Python is determined by its scope in the code. Variables can have different scopes, such as local, enclosing, global, or built-in, which affect their lifespan.

The 'remove()' method is used to remove the first occurrence of a specified value from a list in Python. It raises an error if the value is not found in the list.

To create an empty set in Python, you should use the set() constructor, like this: empty_set = set(). Using {} creates an empty dictionary, not a set.

The break keyword is used to prematurely terminate a loop in Python. When encountered, it exits the loop and continues with the next statement.

The 'break' statement in Python is used to exit the innermost loop when used in nested loops. It terminates the loop in which it is placed, hence exiting the 'Inner' loop.

You can use the 'issubclass()' built-in function in Python to determine if a class is a subclass of another. This function takes two arguments: the derived class and the base class. If the derived class is indeed a subclass of the base class, it returns True; otherwise, it returns False. This function is commonly used for checking class hierarchies and relationships.

The 'enter()' method in a context manager returns the resource that will be managed. It is called when entering the 'with' block.

The pop() method is used to remove a key-value pair from a dictionary by specifying the key. It returns the value associated with the key and removes the key-value pair from the dictionary. The del statement can also be used to delete a key-value pair by specifying the key. The popitem() method removes and returns an arbitrary key-value pair, while remove() is not a standard dictionary method.

The 'break' statement can be used in both 'for' and 'while' loops in Python. It is used to exit the loop prematurely based on a certain condition, making it a useful control structure for loop termination.