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  2. This module implements pseudo-random number generators for various distributions. For integers, there is uniform selection from a range. For sequences, there is uniform selection of a random element, a function to generate a random permutation of a list in-place, and a function for random sampling without replacement.

  3. The secrets module is used for generating cryptographically strong random numbers suitable for managing data such as passwords, account authentication, security tokens, and related secrets.

  4. uuid.uuid1(node=None, clock_seq=None) ¶. Generate a UUID from a host ID, sequence number, and the current time. If node is not given, getnode() is used to obtain the hardware address. If clock_seq is given, it is used as the sequence number; otherwise a random 14-bit sequence number is chosen.

  5. The fractions module provides support for rational number arithmetic. A Fraction instance can be constructed from a pair of integers, from another rational number, or from a string. class fractions.Fraction(numerator=0, denominator=1) ¶. class fractions.Fraction(other_fraction)

  6. The numbers module defines an abstract hierarchy of numeric types. The math and cmath modules contain various mathematical functions for floating-point and complex numbers. The decimal module supports exact representations of decimal numbers, using arbitrary precision arithmetic.

  7. Generates n random samples for a given mean and standard deviation. Returns a list of float values. If seed is given, creates a new instance of the underlying random number generator. This is useful for creating reproducible results, even in a multi-threading context. pdf (x) ¶