How to append a dictionary to a list in Python

How to append a dictionary to a list in Python

Hi,

I have a loop and inside the loop I am creating a dictionary object. Now my requirement is to add the dictionary into the list.

How I can achieve this?

How to append a dictionary to a list in Python?

Thanks

View Answers

July 18, 2021 at 3:13 PM

Hi,

Here is the simple example of appending to a list.

book_dict = {"name":"Python Book", "price":"100"}

myList = []

myList.append(book_dict.copy())

print(myList)

You can use the list.append() method and pass the copy of your dictionary.

If you run the program you will find following output:

>>> book_dict = {"name":"Python Book", "price":"100"}
>>> 
>>> myList = []
>>> 
>>> myList.append(book_dict.copy())
>>> 
>>> 
>>> print(myList)
[{'name': 'Python Book', 'price': '100'}]
>>>

Thanks


July 18, 2021 at 3:18 PM

Hi,

Here is simple example of adding dictionary to list in a for loop:

book_dict = {"name":"Python Book", "price":"100"}
myList = []
for i in range(10):
    print(i)
    dicttemp = book_dict.copy()
    dicttemp["id"]=i
    myList.append(dicttemp.copy())

print(myList)

Here is the output of the program:

>>> book_dict = {"name":"Python Book", "price":"100"}
>>> myList = []
>>> for i in range(10):
...     print(i)
...     dicttemp = book_dict.copy()
...     dicttemp["id"]=i
...     myList.append(dicttemp.copy())
... 
0
1
2
3
4
5
6
7
8
9
>>> print(myList)
[{'name': 'Python Book', 'price': '100', 'id': 0}, {'name': 'Python Book', 'price': '100', 'id': 1}, {'name': 'Python Book', 'price': '100', 'id': 2}, {'name': 'Python Book', 'price': '100', 'id': 3}, {'name': 'Python Book', 'price': '100', 'id': 4}, {'name': 'Python Book', 'price': '100', 'id': 5}, {'name': 'Python Book', 'price': '100', 'id': 6}, {'name': 'Python Book', 'price': '100', 'id': 7}, {'name': 'Python Book', 'price': '100', 'id': 8}, {'name': 'Python Book', 'price': '100', 'id': 9}]
>>> 
>>>

Hope above program helps you.

Thanks


July 18, 2021 at 3:20 PM

Hi,

Check more tutorials at:

Thanks

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