Using iteritools groupby to group a list of paths, by date

Question

tabela path --SAME AS BELOW
tabela_path2 = array[[[],[]]]

    needle = []
    for x in range(2015, 2090):
        needle.append(str(x))

    for needleIndex in range(len(needle)):
        for hayIndex in range(len(tabela_path)):
            if needle[needleIndex] in str(tabela_path[hayIndex]):
                #tabela_path2 somehow fill the table as shown below in tables, 
                #comment says I can use iteritools.groupby

desired output
paths rearanged in as many columns as there are years
This is supposed to be table path 2

‘C: … 2020_06_19	‘C: …2021_07_01	‘C: … 2022_05_12
C: … 2020_06_19…	‘C: …2021_07_01	‘C: … 2022_05_12 …
C: … 2020_06_19….	‘C: …2021_07_01	‘C:2022_05_12
C: … 2020_06_19….	‘C: …2021_07_01	‘C:2022_05_12
ALL ITEMS WITH 2020 Date	ALL ITEMS WITH 2021 Date	ALL ITEMS WITH 2022 Date

more columns if there were more years in data

from itertools import groupby
import string
import random

tabela_path = ['C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2021_07_01', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2022_05_12', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\1000M-6000MHz_BBHA9120J_mobile-rack_200Vm_hor', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\1000M-6000MHz_BBHA9120J_mobile-rack_200Vm_ver', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\20-80M_70Vm_vertical_VHBD9134', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\200M-1000MHz_STLP9128_FLH1000B_200Vm_hor', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\200M-1000MHz_STLP9128_FLH1000B_200Vm_ver', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\6000M-8000MHz_BBHA9120J_mobile-rack_200Vm_hor', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\6000M-8000MHz_BBHA9120J_mobile-rack_200Vm_ver', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\80M-200MHz_STLP9128_extender_PRANA_150Vm_hor', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\80M-200MHz_STLP9128_extender_PRANA_150Vm_ver', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\1000M-6000MHz_BBHA9120J_mobile-rack_200Vm_hor\Graphics', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\1000M-6000MHz_BBHA9120J_mobile-rack_200Vm_hor\Report Setups', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\1000M-6000MHz_BBHA9120J_mobile-rack_200Vm_hor\Setups', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\1000M-6000MHz_BBHA9120J_mobile-rack_200Vm_hor\System', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\1000M-6000MHz_BBHA9120J_mobile-rack_200Vm_ver\Graphics', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\1000M-6000MHz_BBHA9120J_mobile-rack_200Vm_ver\Report Setups', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\1000M-6000MHz_BBHA9120J_mobile-rack_200Vm_ver\Setups', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\1000M-6000MHz_BBHA9120J_mobile-rack_200Vm_ver\System', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\20-80M_70Vm_vertical_VHBD9134\Graphics', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\20-80M_70Vm_vertical_VHBD9134\Report Setups', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\20-80M_70Vm_vertical_VHBD9134\Setups', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\20-80M_70Vm_vertical_VHBD9134\System', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\200M-1000MHz_STLP9128_FLH1000B_200Vm_hor\Graphics', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\200M-1000MHz_STLP9128_FLH1000B_200Vm_hor\Report Setups', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\200M-1000MHz_STLP9128_FLH1000B_200Vm_hor\Setups', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\200M-1000MHz_STLP9128_FLH1000B_200Vm_hor\System', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\200M-1000MHz_STLP9128_FLH1000B_200Vm_ver\Graphics', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\200M-1000MHz_STLP9128_FLH1000B_200Vm_ver\Report Setups', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\200M-1000MHz_STLP9128_FLH1000B_200Vm_ver\Setups', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\200M-1000MHz_STLP9128_FLH1000B_200Vm_ver\System', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\6000M-8000MHz_BBHA9120J_mobile-rack_200Vm_hor\Graphics', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\6000M-8000MHz_BBHA9120J_mobile-rack_200Vm_hor\Report Setups', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\6000M-8000MHz_BBHA9120J_mobile-rack_200Vm_hor\Setups', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\6000M-8000MHz_BBHA9120J_mobile-rack_200Vm_hor\System', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19\6000M-8000MHz_BBHA9120J_mobile-rack_200Vm_ver\Graphics', 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'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2022_05_12\Ref_Cal_6000M-8000MHz_HA9251-48_200Vm_ver_new_Mount\Report Setups', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2022_05_12\Ref_Cal_6000M-8000MHz_HA9251-48_200Vm_ver_new_Mount\Setups', 'C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2022_05_12\Ref_Cal_6000M-8000MHz_HA9251-48_200Vm_ver_new_Mount\System']

tabela_path = sorted (tabela_path)

#print(tabela_path)
for key, group in (groupby(tabela_path, key = )):
    print("                                                              ")
    print ('key:',key,' group:', list (group))

Asked By: mahle-majstr Man

||

Source

Answer 1

There’s a lot wrong with your code so I rewrote what I think you’re trying to do completely. I would recommend using RegEx instead of finding in string as the code is much more flexible if you want to modify it to group by something else than year. It also avoids making an array of all years and then looping through all the years, instead it just extracts the year from the path.

import itertools
import re
import pprint

calibration_paths = ['C:\Users\M0182965\Desktop\emc2\Primerjave_referencnih_kalibracij\2020_06_19', ... ]

def extract_year(path: string):
    year = re.search(r'\d+_', path)
    return year.group(0)[1:5]

paths_by_year={}

for key, group in itertools.groupby(calibration_paths , extract_year):
    paths_by_year[key] = list(group)

Answered By: capo_gapo

Using iteritools groupby to group a list of paths, by date

Question:

Answers: