add dictionary to list of dictionaries python

#Add dictionary to list of dictionaries python code

This adds a key:value pair to the result dictionary.įinally, outside the while loop, we return the value of result on line 16. This gives us a map object that can be converted to a list using the list() function.Īfter converting, we get the list, which we assign to result. The map() function then applies the int() function to all the elements in this list to convert them to integers. Suppose marks.split(',') returns the list. In our suggested solution above, we use the map() function to apply the int() function to all the elements in marks.split(','). The map() function is a built-in function in Python that applies a function to all the elements of an iterable (such as a list). Next, we pass this list and the int() function to another function called map(). Suppose marks = '1, 2, 3, 4', the split() method splits the string into the list.

#Add dictionary to list of dictionaries python code

In our code above, we pass ',' as the delimiter. This method splits a string into a list, using the argument as a delimiter. The mydict dictionary was added to the mylist list and printed.

mylist 'cat', 4, 'emu', 'dog', '.' Now, let’s think about what happened. To get a 0 instead, use an or (which always returns one of the operands): inlinkDict docid adoc 1: or 0. If you add a dictionary to a list in Python, it won’t create a copy of this dictionary, but rather add a reference to the dictionary. Next, on line 14, we do a number of things.įirst, we use marks to call the split() method for strings. Try using a slice: inlinkDict docid adoc 1: This will give you an empty list instead of a 0 for the case where only the key value is on the line. If the user enters -1, we use the break statement on line 10 to exit the while loop.Įlse, we proceed to line 12 where we prompt users to enter the class marks, and assign the input (which is a string) to a variable called marks. On line 7, we prompt users to enter the class name or -1 to quit. Next, we use a while True loop to repeatedly prompt users for input. Inside the function, we declare an empty dictionary called result. In the suggested solution above, we first define a function called getMarks() on line 1. In this tutorial, youll learn about Python dictionaries how they are created, accessing, adding, removing elements from them and various built-in methods.

Result = list(map(int, marks.split(','))) Marks = input('Enter Marks, Separated by Commas: ') Now you can write l, dict, where l is an empty list and. A Python dictionary of lists refers to a dictionary that consists of lists as values.įor instance, if dict1 = ĬlassName = input('Enter Class Name or -1 to Quit: ') Another option in Python 3 is Extended Iterable Unpacking, which was introduced as part of PEP 3132.