Q291. Explain help() and dir() functions in Python?
The help() function displays the documentation string and help for its argument. ```python >>> import copy ``` >>> help(copy.copy) Help on function copy in module copy: c...
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Q292. How do you get a list of all the keys in a dictionary?
In Python, you retrieve dictionary keys using the **`.keys()`** method or by converting the dictionary directly to a `list`: ```python user = {'id': 101, 'username': 'ale...
Q293. How does a function return values?
A Python function returns values to its caller using the **`return`** statement: ### Return Behaviors: 1. **Single Value**: ```python def square(n): return n * n ``` 2. *...
Q294. Can you name ten built-in functions in Python and explain each in brief?
Ten Built-in Functions, you say? Okay, here you go. complex()- Creates a complex number. ```python >>> complex(3.5,4) ``` (3.5+4j) eval()- Parses a string as an expressio...
Q295. What is a function?
When we want to execute a sequence of statements, we can give it a name. Let's def ine a function to take two numbers and return the greater number. ```python >>> def gre...
Q296. What does the function zip() do?
One of the less common functions with beginners, zip() return s an iterator of tuples. ```python >>> list(zip(['a','b','c'],[1,2,3])) ``` [('a', 1), ('b', 2), ('c', 3)] H...
Q297. How is a .pyc file different from a .py file?
While both files hold bytecode, .pyc is the compiled version of a Python file. It has platform-independent bytecode. Hence, we can execute it on any platform that support...
Q298. Does JavaScript support namespaces?
JavaScript doesn’t support namespaces by default. So if you create any element (function, method, object, variable) then it becomes global and pollutes the global namespa...
Q299. How do you declare a namespace?
Even though JavaScript lacks namespaces, we can use Objects, an IIFE (Immediately Invoked Function Expression) or `let`/`const` to create namespaces. 1. **Using Object Li...
Q300. Explain a few methods to implement Functionally Oriented Programming in Python?
Sometimes, when we want to iterate over a list, a few methods come in handy. a. filter() Filter lets us filter in some values based on conditional logic. ```python >>> li...