Python Learning-Exercises 1 consolidation

1. Generate Random Numbers

Random.random () generates a random number before 0-1

Random.uniform (1,10) generates a random number in an interval range

Random.randint (3,9) generates an integer random number in an interval range

Random.choice (list or str or tunple) randomly selects an element in a sequence of lists, tuples, strings, etc.

Random.shuffle (a) randomly disrupts a sequence

Random.sample (a) randomly obtaining fragments of a specified length from a sequence

2. Generate UUID

UUID.UUID1 () timestamp-based

UUID3 ()--MD5 hash value based on name
By calculating the MD5 hash of the name and namespace, it is worthwhile to ensure the uniqueness of different names in the same namespace, and the uniqueness of different namespaces, but the same name of the same namespace produces the same UUID.

Uuid4 ()--based on random numbers
obtained by pseudo-random number, there is a certain repetition probability, the probability can be calculated.

Python Learning-Exercises 1 consolidation