I have tuples like this
[('AVAX', '070122'), ('AVAX', '201221'), ('AVAX', '211221'), ('AVAX', '241221'), ('AVAX', '311221'), ('BNB', '070122'), ('BNB', '201221'), ('BNB', '211221'), ('BNB', '241221'), ('BNB', '280122'), ('BNB', '311221'), ('BTC', '070122'), ('BTC', '201221'), ('BTC', '211221'), ('BTC', '241221'), ('BTC', '250222'), ('BTC', '250322'), ('BTC', '280122'), ('BTC', '311221'), ('ETH', '070122'), ('ETH', '201221'), ('ETH', '211221'), ('ETH', '241221'), ('ETH', '250222'), ('ETH', '250322'), ('ETH', '280122'), ('ETH', '311221'), ('MATIC', '070122'), ('MATIC', '201221'), ('MATIC', '211221'), ('MATIC', '241221'), ('MATIC', '311221'), ('SOL', '070122'), ('SOL', '201221'), ('SOL', '211221'), ('SOL', '241221'), ('SOL', '280122'), ('SOL', '311221')]
these are the coins and its expiries. The date is in string format, so the arrangement is wrong.
so i have changed the format to date and tried to arrange. I have tried the below code.
filtered_final_product_list = [list(ele) for ele in filtered_final_product_list]
new_list=list()
for i in filtered_final_product_list:
i[1]=datetime.strptime(i[1],'%d%m%y')
new_list.append(i)
print(sorted(new_list))
and the result is as expected as sorted.
[['AVAX', datetime.datetime(2021, 12, 20, 0, 0)], ['AVAX', datetime.datetime(2021, 12, 21, 0, 0)], ['AVAX', datetime.datetime(2021, 12, 24, 0, 0)], ['AVAX', datetime.datetime(2021, 12, 31, 0, 0)], ['AVAX', datetime.datetime(2022, 1, 7, 0, 0)], ['BNB', datetime.datetime(2021, 12, 20, 0, 0)], ['BNB', datetime.datetime(2021, 12, 21, 0, 0)], ['BNB', datetime.datetime(2021, 12, 24, 0, 0)], ['BNB', datetime.datetime(2021, 12, 31, 0, 0)], ['BNB', datetime.datetime(2022, 1, 7, 0, 0)], ['BNB', datetime.datetime(2022, 1, 28, 0, 0)], ['BTC', datetime.datetime(2021, 12, 20, 0, 0)], ['BTC', datetime.datetime(2021, 12, 21, 0, 0)], ['BTC', datetime.datetime(2021, 12, 24, 0, 0)], ['BTC', datetime.datetime(2021, 12, 31, 0, 0)], ['BTC', datetime.datetime(2022, 1, 7, 0, 0)], ['BTC', datetime.datetime(2022, 1, 28, 0, 0)], ['BTC', datetime.datetime(2022, 2, 25, 0, 0)], ['BTC', datetime.datetime(2022, 3, 25, 0, 0)], ['ETH', datetime.datetime(2021, 12, 20, 0, 0)], ['ETH', datetime.datetime(2021, 12, 21, 0, 0)], ['ETH', datetime.datetime(2021, 12, 24, 0, 0)], ['ETH', datetime.datetime(2021, 12, 31, 0, 0)], ['ETH', datetime.datetime(2022, 1, 7, 0, 0)], ['ETH', datetime.datetime(2022, 1, 28, 0, 0)], ['ETH', datetime.datetime(2022, 2, 25, 0, 0)], ['ETH', datetime.datetime(2022, 3, 25, 0, 0)], ['MATIC', datetime.datetime(2021, 12, 20, 0, 0)], ['MATIC', datetime.datetime(2021, 12, 21, 0, 0)], ['MATIC', datetime.datetime(2021, 12, 24, 0, 0)], ['MATIC', datetime.datetime(2021, 12, 31, 0, 0)], ['MATIC', datetime.datetime(2022, 1, 7, 0, 0)], ['SOL', datetime.datetime(2021, 12, 20, 0, 0)], ['SOL', datetime.datetime(2021, 12, 21, 0, 0)], ['SOL', datetime.datetime(2021, 12, 24, 0, 0)], ['SOL', datetime.datetime(2021, 12, 31, 0, 0)], ['SOL', datetime.datetime(2022, 1, 7, 0, 0)], ['SOL', datetime.datetime(2022, 1, 28, 0, 0)]]
now when i want back in older format which i mentioned in string, its not in the same order. It goes into unsorted way. Need help in making in sorted way in string format at the end.
CodePudding user response:
Sort by the coin and the date using datetime.datetime
:
from datetime import datetime
sorted(lst, key=lambda x:(x[0], datetime.strptime(x[1], '%d%m%y')))
Output:
[('AVAX', '201221'), ('AVAX', '211221'), ('AVAX', '241221'),
('AVAX', '311221'), ('AVAX', '070122'), ('BNB', '201221'),
('BNB', '211221'), ('BNB', '241221'), ('BNB', '311221'),
('BNB', '070122'), ('BNB', '280122'), ('BTC', '201221'),
('BTC', '211221'), ('BTC', '241221'), ('BTC', '311221'),
('BTC', '070122'), ('BTC', '280122'), ('BTC', '250222'),
('BTC', '250322'), ('ETH', '201221'), ('ETH', '211221'),
('ETH', '241221'), ('ETH', '311221'), ('ETH', '070122'),
('ETH', '280122'), ('ETH', '250222'), ('ETH', '250322'),
('MATIC', '201221'), ('MATIC', '211221'), ('MATIC', '241221'),
('MATIC', '311221'), ('MATIC', '070122'), ('SOL', '201221'),
('SOL', '211221'), ('SOL', '241221'), ('SOL', '311221'),
('SOL', '070122'), ('SOL', '280122')]
CodePudding user response:
This will do what you ask, but as I said, it would be better for you to generate these tuples with the dates in the proper format to begin with.
product_list = [('AVAX', '070122'), ('AVAX', '201221'), ('AVAX', '211221'), ('AVAX', '241221'), ('AVAX', '311221'), ('BNB', '070122'), ('BNB', '201221'), ('BNB', '211221'), ('BNB', '241221'), ('BNB', '280122'), ('BNB', '311221'), ('BTC', '070122'), ('BTC', '201221'), ('BTC', '211221'), ('BTC', '241221'), ('BTC', '250222'), ('BTC', '250322'), ('BTC', '280122'), ('BTC', '311221'), ('ETH', '070122'), ('ETH', '201221'), ('ETH', '211221'), ('ETH', '241221'), ('ETH', '250222'), ('ETH', '250322'), ('ETH', '280122'), ('ETH', '311221'), ('MATIC', '070122'), ('MATIC', '201221'), ('MATIC', '211221'), ('MATIC', '241221'), ('MATIC', '311221'), ('SOL', '070122'), ('SOL', '201221'), ('SOL', '211221'), ('SOL', '241221'), ('SOL', '280122'), ('SOL', '311221')]
product_list.sort( key=lambda k: (k[0],k[1][4:6] k[1][2:4] k[1][0:2]))
print(product_list)
CodePudding user response:
When you want to create the new_list and want to have back up of existing list
Note : sorted() :-> creates a new list
borrowed code from @manlai A: thank you for sharing your answer
from datetime import datetime
new_list = sorted(lst, key=lambda x:(x[0], datetime.strptime(x[1], '%d%m%y')))
print(new_list)
When you want to Modify Existing list
Note : given_list_obj.sort(key=function) :-> sort existing list
new_list1 = lst.copy()
new_list1.sort(key=lambda x:(x[0], datetime.strptime(x[1], '%d%m%y')))
print(new_list)
output
[('AVAX', '201221'), ('AVAX', '211221'), ('AVAX', '241221'),
('AVAX', '311221'), ('AVAX', '070122'), ('BNB', '201221'),
('BNB', '211221'), ('BNB', '241221'), ('BNB', '311221'),
('BNB', '070122'), ('BNB', '280122'), ('BTC', '201221'),
('BTC', '211221'), ('BTC', '241221'), ('BTC', '311221'),
('BTC', '070122'), ('BTC', '280122'), ('BTC', '250222'),
('BTC', '250322'), ('ETH', '201221'), ('ETH', '211221'),
('ETH', '241221'), ('ETH', '311221'), ('ETH', '070122'),
('ETH', '280122'), ('ETH', '250222'), ('ETH', '250322'),
('MATIC', '201221'), ('MATIC', '211221'), ('MATIC', '241221'),
('MATIC', '311221'), ('MATIC', '070122'), ('SOL', '201221'),
('SOL', '211221'), ('SOL', '241221'), ('SOL', '311221'),
('SOL', '070122'), ('SOL', '280122')]