In Python, when to use a Dictionary, List or Set?
Jul 1, 2019 · When should I use a dictionary, list or set? Are there scenarios that are more suited for each data type?
python - Iterating over a dictionary using a 'for' loop, getting keys ...
Mar 16, 2017 · A dictionary in Python is a collection of key-value pairs. Each key is connected to a value, and you can use a key to access the value associated with that key.
python - Passing a dictionary to a function as keyword parameters ...
How to use a dictionary with more keys than function arguments: A solution to #3, above, is to accept (and ignore) additional kwargs in your function (note, by convention _ is a variable name used for …
Mapping over values in a python dictionary - Stack Overflow
Sep 1, 2012 · (Note that if you're still using Python 2.7, you should use the .iteritems() method instead of .items() to save memory. Also, the dict comprehension syntax wasn't introduced until Python 2.7.)
python - Using a dictionary to count the items in a list - Stack Overflow
Sep 12, 2019 · Almost as much work as just adding them to a Dictionary of counts and incrementing the count if already present, and that's just for making the set. What I described for adding to a …
How do I assign a dictionary value to a variable in Python?
Nov 17, 2012 · I'm an amateur when it comes to programming, but I'm trying my hand at Python. Basically what I want to be able to do is use math on a dictionary value. The only way I could think to …
How can I use if/else in a dictionary comprehension?
Feb 25, 2012 · Another example in using if/else in dictionary comprehension I am working on data-entry desktop application for my own office work, and it is common for such data-entry application to get all …
python - How can I get a random key-value pair from a dictionary ...
In Python 3.x, the objects returned by methods dict.keys(), dict.values() and dict.items() are view objects, which cannot be used directly with random.choice. One option is to pass random.choice a …
python - Should I use a class or dictionary? - Stack Overflow
50 Use a dictionary unless you need the extra mechanism of a class. You could also use a namedtuple for a hybrid approach:
How to use a dot "." to access members of dictionary?
Mar 1, 2010 · How do I make Python dictionary members accessible via a dot "."? For example, instead of writing mydict['val'], I'd like to write mydict.val. Also I'd like to access nested dicts this way. For e...