forked from codonlibrary/codonPython
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathnhsNumberGenerator.py
More file actions
39 lines (33 loc) · 1.18 KB
/
Copy pathnhsNumberGenerator.py
File metadata and controls
39 lines (33 loc) · 1.18 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
import random
def nhsNumberGenerator(to_generate: int)->list:
"""
Generates random NHS number(s) compliant with modulus 11 checks recorded
in the data dictonary.
https://www.datadictionary.nhs.uk/data_dictionary/attributes/n/nhs/nhs_number_de.asp?shownav=1
Parameters
----------
to_generate : int
number of NHS numbers to generate
Returns
----------
generated : list
List of randomly generated NHS numbers
Examples
---------
>>> random.seed(42)
>>> nhsNumberGenerator(2)
[7865793030, 1933498560]
"""
generated = []
while len(generated) < to_generate:
# Random 9 digit number starting with non-zero digit
number = random.randint(100000000, 999999999)
digits = [int(digit) for digit in str(number)]
# Apply weighting to digits
weighted_digits = [(10 - index) * digit for (index, digit) in enumerate(digits)]
# Sum of all weighted digits must be a multiple of 11 to be valid.
if sum(weighted_digits) % 11 == 0:
# Add check digit to valid number
number = int(str(number) + "0")
generated.append(number)
return generated