Python MCQ 139, Function return annotation,Test Your Skills#python#pythonprogramming#shorts#trending

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Python MCQ Questions and answers,
Python MCQ , Python Programming,
Python, Python user-defined,
user-defined functions,
function call,
Function annotation, Function's return value annotation,
annotation of function return value,
annotation, type hint, standard types, generic types,
bool to int, union type of type hint,
Function's return value annotation Python expression,
Python expression as return value in Annotation

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**********--------------------------***********
*To annotate the type of a function’s return value:*
Method1 - PEP 484: 👉 MCQ 137
🎯 Method2 - PEP 3107:
*def sum() -＞ expression:*
...
→parameter list followed by a literal -＞ and a Python expression.
→expression will be evaluated when the function definition is executed.

In fex(x), 2+k→2+4⇒6
⇒*Expected return is 6*
print(fex(3))
🔎→calls fex(3)→returns 2+3⇒ *5*
⏰⇒No error ∵annotation👉 MCQ138
**********--------------------------***********

function returns None,
function returning None.
None value of type NoneType.
function with no return statement, implicit return None,
function with no return value.
✓ No error⇒because return is optional (MCQ 121)
✓ Implicitly returns None→When a function has no
explicit return statement⇒automatically returns None by default.

✓ Control always returns
⇒when function ends or reaches return
→Python uses indentation to define function boundaries.
→Here, when the interpreter reaches the last indented line
→identifies function end is reached
→since there's no return statement
⇒returns None automatically, exits the function
and control jumps to where the function was called.
A user-defined function:
1) to group reusable logic.
2) created using the keyword def.
3) parameters/arguments are optional
4) may or may not have a return statement.
5) can have multiple return statement.
6) must always be defined before call.
7) can be called many times.

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Ace your Python exams with this MCQ marathon!
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#ssitlecturestamil ‎@ssitlecturestamilதமிழ் 

A user-defined function:
→groups reusable logic(1)
⇒modularity, efficiency
→write-once call many(7)
⇒DRY principle (Don't Repeat Yourself)
⇒reusability,easy to test, debug, reduce redundancy
Fn Definition(2)
→creates fn
def fn_name(pmrs):
code_block
return val
fn_name→identifier
pmrs→Formal Parameters→optional(3)
return→optional(4) →can be multiple(5)
⇒stops fn execution, returns val
Fn Call→executes fn
fn_name(pval)
pval→Actual Parameters →value passed
Fn must be defined before call(6)

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