Q231. 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...
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Q232. 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 ...
Q233. 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"} ``` >>...
Q234. 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 ...
Q235. 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...
Q236. 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...
Q237. What Is The Syntax For List Comprehension In Python?
The signature for the list comprehension is as follows: [ expression(var) for var in iterable ] For example, the below code will return all the numbers from 10 to 20 and ...
Q238. What Is The Syntax For Dictionary Comprehension In Python?
A dictionary has the same syntax as was for the list comprehension but the difference is that it uses curly braces: { aKey, itsValue for aKey in iterable } For example, t...
Q239. What Is The Syntax For Generator Expression In Python?
The syntax for generator expression matches with the list comprehension, but the difference is that it uses parenthesis: ( expression(var) for var in iterable ) For examp...
Q240. How Do You Write A Conditional Expression In Python?
We can utilize the following single statement as a conditional expression. def ault_statment if Condition else another_statement ```python >>> no_of_days = 366 ``` >>> is...