How to randomly generate a string of uppercase letters and numbers

Requirements

Randomly generate a fixed-length combination of uppercase letters and numbers.

Implementation

#!/usr/bin/env python
# -*- coding:utf-8 -*-
import random
def getRandomSet(bits):
    num_set = [chr(i) for i in range(48,58)]
    char_set = [chr(i) for i in range(65,90)]
    total_set = num_set + char_set
    value_set = "".join(random.sample(total_set, bits))
    return value_set
if __name__ == '__main__' :
    strings = getRandomSet(26)
    print(strings)

Analysis

1. First use the chr() function , generate two lists of uppercase letters and numbers

2. Merge the two lists

3. Use the sample sampling function of the random module to randomly collect the specified number of characters.

4. The result of random sampling is a list and needs to be converted into str type. Just use the join function of str.

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