Convert a list of tuples into a list of dict

问题

I have a list of tuple:

[('Lebron James', datetime.date(2017, 12, 23), 500),
 ('Julie Peralta', datetime.date(2017, 12, 13), 1500),
 ('Reynaldo Pahay', datetime.date(2017, 12, 11), 2500)]

I want to convert it into a list of dictionary:

[{'Name': 'Lebron James', 'date': datetime.date(2017, 12, 23), 'penalty': 500},
 {'Name': 'Julie Peralta', 'date': datetime.date(2017, 12, 13), 'penalty': 1500},
 {'Name': 'Reynaldo Pahay', 'date': datetime.date(2017, 12, 11), 'penalty': 2500}]

What's the best and efficient way to do it?

回答1:

You can make use of zip function.

import datetime

def get_list_of_dict(keys, list_of_tuples):
     """
     This function will accept keys and list_of_tuples as args and return list of dicts
     """
     list_of_dict = [dict(zip(keys, values)) for values in list_of_tuples]
     return list_of_dict

DEMO

keys = ("name", "date", "penalty")
my_list_of_tuples = [
                      ('Lebron James', datetime.date(2017, 12, 23), 500), 
                      ('Julie Peralta', datetime.date(2017, 12, 13), 1500), 
                      ('Reynaldo Pahay', datetime.date(2017, 12, 11), 2500)
                    ]


print(get_list_of_dict(keys, my_list_of_tuples))
#output
#[{'date': datetime.date(2017, 12, 23), 'penalty': 500, 'name': 'Lebron James'}, {'date': datetime.date(2017, 12, 13), 'penalty': 1500, 'name': 'Julie Peralta'}, {'date': datetime.date(2017, 12, 11), 'penalty': 2500, 'name': 'Reynaldo Pahay'}]

回答2:

import datetime

data = [('Lebron James', datetime.date(2017, 12, 23), 500), 
        ('Julie Peralta', datetime.date(2017, 12, 13), 1500), 
        ('Reynaldo Pahay', datetime.date(2017, 12, 11), 2500)]

print([{'Name': name, 'date': date, 'penalty': penalty} for name, date, penalty in data])
# [{'Name': 'Lebron James', 'date': datetime.date(2017, 12, 23), 'penalty': 500}, {'Name': 'Julie Peralta', 'date': datetime.date(2017, 12, 13), 'penalty': 1500}, {'Name': 'Reynaldo Pahay', 'date': datetime.date(2017, 12, 11), 'penalty': 2500}]

回答3:

import datetime
lista = [('Lebron James', datetime.date(2017, 12, 23), 500), ('Julie Peralta', datetime.date(2017, 12, 13), 1500), ('Reynaldo Pahay', datetime.date(2017, 12, 11), 2500)]
output = [{"name":a[0], "date":a[1],'penalty':a[2]} for a in lista]
print(output)

来源：https://stackoverflow.com/questions/47807446/convert-a-list-of-tuples-into-a-list-of-dict

标签

python

python-3.x

dictionary

tuples