how to use proper looping to generate random permutation code in python?

Question

I need to generate random unique code with permutations, I’m trying to use a fast way by using

import random

FullChar = 'CFKLMNPRTVWXY01234678'
entriess = []

for i in range(5):
    unique_code = ''.join(random.sample(FullChar, count))
    entry = (unique_code, flg_id, get_id, bcd)
    entriess.append(entry)
print(entriess)

output

example
[('6M7Y13F', None, None, None), ('XNMV714', None, None, None), ('4FMRLK7', None, None, None), ('4LYT2C6', None, None, None), ('0R61KNL', None, None, None)]

the printed code is indeed random, but I want to try another method to generate a random unique code with numpy, for the install process I use

pip install numpy

here’s the code

import numpy as np

FullChar = 'CFKLMNPRTVWXY01234678' 
entries = []
result =''
test = np.random.permutation(len(FullChar))
for j in test[:7]:
    result += FullChar[j]
entry = (result, flg_id, get_id, bcd)
entries.append(entry)
print(entries)

output

example
[('WM6LF7P', None, None, None)]

expected output

example
[('W3PT1N6', None, None, None), ('KVC7864', None, None, None), ('R236FNY', None, None, None), ('XVF3PL2', None, None, None), ('6V2RFKC', None, None, None)]

how to use proper looping to generate permutation random code like import random?
thank you

Asked By: alex

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Source

Answer 1

You can pull the indices from FullChar and then join them together, like so

result = ''.join(FullChar[i] for i in np.random.permutation(len(FullChar)))

Answered By: oskros

Answer 2

import numpy as np

FullChar = 'CFKLMNPRTVWXY01234678' 
entries = []

for i in range(5):
    result = ''
    test = np.random.permutation(len(FullChar))
    for j in test[:7]:
        result += FullChar[j]
    entry = (result, None, None, None)
    entries.append(entry)

print(entries)

[('PT46017', None, None, None), ('TRF7P3W', None, None, None), ('4NRXMTC', None, None, None), ('XY8L603', None, None, None), ('1RXN6WL', None, None, None)]

Answered By: AboAmmar

how to use proper looping to generate random permutation code in python?

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