Python's float() Function

In Python, the `float()` function serves as a handy tool for converting both numbers and strings into floating-point numbers.

float(x)

Here, 'x' can either be a numeric value or a string that denotes a number.

Upon execution, the function provides the corresponding floating-point representation.

Be cautious, though. If you try converting a string that isn't a valid number representation, you'll encounter an error. For instance, `float("abc")` will trigger a ValueError exception.

Let's delve into a practical example.

Suppose you wish to convert the string "123.456" using the `float()` function:

float("123.456")

This operation results in:

123.456

Now, if we were to convert the integer 123.

float(123)

The outcome from the `float()` function would be:

123.

It's crucial to remember that floating-point numbers inherently have precision limitations.

As such, when dealing with extremely large or minuscule numbers, the conversion might not always be spot-on.