Python 3 - EdDoc

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random.random()

A function available after importing the built-in random module.
Returns a floating point number in the range 0.0 to 1.0.

arguments:

None.

returns:

a randomly generated float.

what it can do:

This function simply returns a floating point number in the range 0.0 to 1.0.

>>> random.random()
0.6281101408783788