Q1. What is Dict and List comprehensions are?
**List and Dictionary comprehensions** provide a concise, declarative syntax to construct new lists and dictionaries from existing iterables: ### 1. List Comprehension: S...
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Q2. Do sets, dictionaries and tuples also support comprehensions?
Sets and dictionaries support it. However tuples are immutable and have generators but not comprehensions. Set Comprehension: r={xforxinrange(2,101) ifnotany(x%y==0foryin...
Q3. What is a dictionary in Python?
The built-in datatypes in Python is called dictionary. It def ines one-to-one relationship between keys and values. Dictionaries contain pair of keys and their correspond...
Q4. What Is The Use Of The Dictionary In Python?
A dictionary has a group of objects (the keys) map to another group of objects (the values). A Python dictionary represents a mapping of unique Keys to Values. They are m...
Q5. How Do You Create A Dictionary In Python?
Let's take the example of building site statistics. For this, we first need to break up the key-value pairs using a colon(":"). The keys should be of an immutable type, i...
Q6. How Do You Read From A Dictionary In Python?
To fetch data from a dictionary, we can directly access using the keys. We can enclose a "key" using brackets […] after mentioning the variable name corresponding to the ...
Q7. How Do You Traverse Through A Dictionary Object In Python?
We can use the "for" and "in" loop for traversing the dictionary object. ```python >>> site_stats = {'site': 'tecbeamers.com', 'traffic': 10000, "type": "organic"} ``` >>...
Q8. How Do You Add Elements To A Dictionary In Python?
We can add elements by modifying the dictionary with a fresh key and then set the value to it. ```python >>> # Setup a blank dictionary ``` >>> site_stats = {} ```python ...
Q9. How Do You Delete Elements Of A Dictionary In Python?
We can delete a key in a dictionary by using the del() method. ```python >>> site_stats = {'site': 'tecbeamers.com', 'traffic': 10000, "type": "organic"} ``` >>> del site...
Q10. How Do You Check The Presence Of A Key In A Dictionary?
We can use Python's "in" operator to test the presence of a key inside a dict object. ```python >>> site_stats = {'site': 'tecbeamers.com', 'traffic': 10000, "type": "org...