Dec 8, 2011 · I want to build a dictionary in Python. However, all the examples that I see are instantiating a dictionary from a list, etc . .. How do I create a new empty dictionary in Python?

How do I add a new key to an existing dictionary? It doesn't have an .add () method.

35 Python is recursively checking each element of the dictionaries to ensure equality. See the C dict_equal() implementation, which checks each and every key and value (provided the dictionaries …

With Python 2.7, I can get dictionary keys, values, or items as a list:

"1" in d And then python would tell me if that is true or false, however I need to do that same exact thing except to find if a value exists.

I have looked through the information that the Python documentation for pickle gives, but I'm still a little confused. What would be some sample code that would write a new file and then use pickle...

30 Python's dictionaries have no order, so indexing like you are suggesting (fruits[2]) makes no sense as you can't retrieve the second element of something that has no order. They are merely sets of …

As mentioned in PythonCookbook, * can be added before a tuple. What does * mean here? Chapter 1.18. Mapping Names to Sequence Elements: from collections import namedtuple Stock = …

Nov 5, 2014 · The title would be more clearer if it could say - "Converting dictionary to JSON string" because sometimes it's not implied by default.

Python supports dict comprehensions, which allow you to express the creation of dictionaries at runtime using a similarly concise syntax. A dictionary comprehension takes the form {key: value for (key, …