Use bytes(source, encoding) for immutable byte sequence. Example: bytes('hello', 'utf-8') or bytes([65, 66, 67]). Immutable like tuple. b'literal' syntax. decode() to string. Binary data representation.

Question 2 Easy Mcq

✓ Correct ✗ Incorrect

What is the purpose of the map function?

To integrate geographical data (such as Google Maps) in Python programs.

To construct a directory of a Python package.

To take a list and remove elements based on some criteria.

To perform a specific action on each element of a list without writing a loop.

Explanation:

map() function applies function to all items in iterable. Syntax: map(function, iterable). Returns map object (iterator). Example: list(map(lambda x: x*2, [1,2,3])) returns [2,4,6]. Applies transformation to each element. Functional programming construct. Common with lambda functions.

Question 3 Medium Mcq

✓ Correct ✗ Incorrect

Which of the following code samples will read arguments if the script is run from the command line?

import argparse parser = argparse.ArgumentParser() print parser.arguments()

from optparse import OptionParser parser = OptionParser() print parser.arguments()

import sys print sys.argv

import os print os.argv

Explanation:

Lambda limitations: single expression only, no statements, no multiple expressions, no annotations. Cannot contain: assignment, while, try, with, etc. Use def for complex functions. Lambda for simple inline operations. Good for: map, filter, sorted key, one-liners. Understand when lambda appropriate vs def function.

Question 4 Medium Mcq

✓ Correct ✗ Incorrect

Invoking the ___ method converts raw byte data to a string?

encode()

decode()

convertString()

toString()

Explanation:

Use chr(integer) for integer to character. Example: chr(65) returns 'A'. Inverse: ord(char). Unicode code points in Python 3. chr(97) = 'a'. Valid range: 0 to 1,114,111. Character code conversion. ASCII and Unicode support.

Question 5 Easy Mcq

✓ Correct ✗ Incorrect

What is one of the most common use of Python's sys library?

To capture command-line arguments given at a file's runtime

To connect various systems, such as connecting a web front end, an API service, a database, and a mobile app

To take a snapshot of all the packages and libraries in your virtual environment

To scan the health of your Python ecosystem while inside a virtual environment

Explanation:

Use sys.path to see module search paths. List of directory strings. Modify to add locations: sys.path.append('/my/path'). First directory is script location. PYTHONPATH adds to path. Module import path management.

Question 6 Medium Mcq

✓ Correct ✗ Incorrect

Which of the following will throw an exception in Python?

call Exception("Here is an Exception!")

throw Exception("Here is an Exception!")

raise Exception("Here is an Exception!")

create Exception("Here is an Exception!")

Explanation:

Throw exception: Depends on code. Common: dividing by zero (ZeroDivisionError), accessing undefined variable (NameError), wrong type operation (TypeError), key not in dict (KeyError), index out of range (IndexError), importing missing module (ImportError). Many operations can raise exceptions. Context determines specific exception.

Question 7 Medium Mcq

✓ Correct ✗ Incorrect

Find the output of the following Python code and choose the correct answer from the given options.double = lambda x: x * 2mt = [1, 5, 4, 6, 8, 11, 3, 12]ns = list(filter(lambda x: (x%2 == 0) , mt))print(double(6))print(ns)

12[0, 4, 6, 8, 12]

12[4, 6, 8, 10, 12]

12[4, 6, 8, 12]

Code will give a compilation error.

Explanation:

Raise statement: raise Exception('message') throws exception. raise with no argument re-raises current exception. raise Exception from cause chains exceptions. Exception raising control.

Question 8 Medium Mcq

✓ Correct ✗ Incorrect

How can an element be removed from a list using its list index?

myList.remove(index)

pop myList[index]

del myList[index]

myList.delete(index)

Explanation:

Remove by index: del list[index] or list.pop(index). del removes, pop removes and returns. Example: del mylist[2] removes third element. pop(2) removes and returns. Choose based on whether value needed. Both modify list in-place. Index-based removal methods.

Question 9 Easy Mcq

✓ Correct ✗ Incorrect

What is the basic difference between theses two operations in 're' module: match() and search()?

re.search() operation checks for a match anywhere in the string. re.match() operation checks for a match only at the begining of the string.

The only difference is that re.search() has much more parameters than re.match()

The only difference is that re.match() has much more parameters than re.search()

There is no difference between the two operations.

Explanation:

re.match() checks if pattern matches at string beginning. re.search() searches entire string for first match anywhere. match() anchored to start, search() finds anywhere. Example: re.match(r'\d+', 'abc123') returns None, re.search(r'\d+', 'abc123') finds '123'. Use match for start validation, search for finding.

Question 10 Medium Mcq

✓ Correct ✗ Incorrect

Which of the following options does not contain duplicate elements?

Lists

Sets

Tuples

Strings

Explanation:

LBYL: Look Before You Leap. Check conditions before action. Example: if key in dict: use dict[key]. Opposite of EAFP. Race conditions in concurrent code. Less Pythonic. Defensive programming.

Question 11 Medium Mcq

✓ Correct ✗ Incorrect

Read the following statements:>>> import string>>> str = "Mary had a lamp in her Hand">>> str = string.replace(str, 'ha', 'stan')>>> strWhich of the following will be the output?

Mary had a lamp in her Hand

Mary stand a lamp in her Hand

Mary had a lamp in her stannd

Mary stand a lamp in her stannd

Explanation:

Output: 'Mary stannd a lamp in her Hanstannd'. string.replace(str, 'ha', 'stan') replaces all 'ha' occurrences with 'stan'. 'Mary had' becomes 'Mary stannd' (replaced 'ha' in 'had'). 'Hand' becomes 'Hanstannd'. All 'ha' substrings replaced including within words. Result shows multiple replacements.

Question 12 Easy Mcq

✓ Correct ✗ Incorrect

What is the correct syntax for instantiating a new object of the type Game?

My_game = class.Game()

My_game = class(Game)

My_game = Game()

My_game = Game.create()

Explanation:

Use datetime.timedelta for time duration. Example: delta = timedelta(days=7, hours=3). Arithmetic: dt + delta. Supports days, seconds, microseconds, milliseconds, minutes, hours, weeks. Duration representation.

Question 13 Medium Mcq

✓ Correct ✗ Incorrect

Analyse the given Python code and answer the question that follows.def att_d(fun):fun.data = 3return fun@att_ddef xyz (x. y):return x + y鈥�print(xyz(2, 23))print(xyz.data)What will be the correct output of the above Python code?

425

443

465

483

Explanation:

Default arguments: evaluated once at definition time. Mutable defaults shared. Example: def func(lst=[]): lst.append(1) keeps growing. Use None: def func(lst=None): lst = lst or []. Common pitfall. Initialization timing.

Question 14 Medium Mcq

✓ Correct ✗ Incorrect

In Python 3.2's stand CPython implementation, all built-in types support weak-referencing.

false

true

Explanation:

False. Not all built-in types support weak referencing in CPython 3.2. Some types (int, str, tuple) don't. list, dict support weak refs. Weak reference support type-dependent. Some immutable types don't support. Limitation in implementation.

Question 15 Medium Mcq

✓ Correct ✗ Incorrect

What will typing the following at the Python interpreter produce? sequence = ['A','B','C','D','E','F'] ; sequence[1:2:3]

[]

['B']

['B', 'C']

Explanation:

Output: ['B']. Slice [1:2:3] means start=1, stop=2, step=3. Gets element at index 1 ('B'), then steps 3 but already past stop. Result: single-element list ['B']. Step 3 too large to get more elements before reaching stop. Slicing with large step.

Question 16 Medium Mcq

✓ Correct ✗ Incorrect

Read the following statements:>>> import string>>> s = 'mary\011had a little lamb'>>> print sWhich of the following will be the output of the above code snippet?

mary had a little lamb

mary\011 had a little lamb

mary had a little lamb

mary\011had a little lamb

Explanation:

Output: 'mary\thad a little lamb'. \011 is octal tab (\t). print s displays tab as whitespace. Actual output shows tab character as space/indent. String contains literal tab. print interprets tab for display. Tab expands to spaces/alignment depending on terminal.

Question 17 Medium Mcq

✓ Correct ✗ Incorrect

class Foo(object): def bar(self, x): pass foo = Foo() is foo.bar and foo.bar.__func__ is the same object?

Yes

foo.bar does't have attribute __func__

Explanation:

No, foo.bar (bound method) and foo.bar.__func__ (unbound function) are different objects. foo.bar is bound method wrapping the function. __func__ attribute accesses underlying function. Bound method = function + instance. Different memory locations. is checks identity (False).

Question 18 Medium Mcq

✓ Correct ✗ Incorrect

Various email and news clients store messages in a variety of formats, many providing hierarchical and structured folders. Which of the following provides a uniform API for reading the messages stored in all the most popular folder formats?

mailstruct

emailarch

emailfolders

mailbox

Explanation:

Use mailbox module for unified API across formats. Supports: mbox, MH, Maildir, Babyl, MMDF. mailbox.Mailbox base class. Format-specific subclasses. Uniform interface for different folder formats. Enables portable email client development. Read/write messages across various storage formats.

Question 19 Medium Mcq

✓ Correct ✗ Incorrect

Which of these will allow you to put more than one statement in one line of text?

A colon

A triple-quoted string

An extra indent

A semicolon

Explanation:

Use semicolon ; to put multiple statements on one line: statement1; statement2. Example: a=1; b=2; print(a+b). Discouraged by PEP 8 (readability). Valid syntax but reduces readability. Prefer separate lines. Semicolon statement separator. Newline also separates statements.

Question 20 Medium Mcq

✓ Correct ✗ Incorrect

Which Python implementation is best for testing Java code?

CPython

IronPython

Jython

PyPy

Explanation:

Jython (Python implementation in Java) is best for testing Java code. Runs on JVM, can import and use Java classes directly, seamless Java integration. Alternative: JPype allows CPython to call Java. Jython enables Python scripting of Java libraries, testing Java code with Python syntax. Specialized Python implementation.

Question 21 Medium Mcq

✓ Correct ✗ Incorrect

Which of the following databases can be used with Python?1. MySQL2. Oracle3. Maria DB4. Microsoft SQL Server

All options 1, 2, 3, and 4

Only options 1 and 4.

Only options 1, 2, and 4.

Only options 2, 3, and 4.

Explanation:

List clear(): lst.clear() removes all elements. Example: lst.clear() gives []. Modifies in-place. Equivalent to del lst[:]. Complete list clearing.

Question 22 Medium Mcq

✓ Correct ✗ Incorrect

Consider the Python 3.4.2 code that is given in the image. Choose the correct line(s) number from thefollowing options that will not give an output as "None".

Line number 9

Line number 11

Line number 13

Explanation:

Dictionary setdefault(): dict.setdefault(key, default). Returns value if exists, else sets and returns default. Example: counts.setdefault(word, 0). Atomic get-or-create. Useful for initialization. defaultdict alternative for complex cases.

Question 23 Medium Mcq

✓ Correct ✗ Incorrect

What will be the correct output of the following Python code?lst = [3, 1, 2, 5, 4, 3, 8]del lst[2 : 5]print (end="")for i in range(0, len(lst)):print(lst[i]+1, end=" ")print("\r")lst.pop(2)print (end="")for i in range(0, len(lst)):print(lst[i]+2, end=" ")

2 1 2 45 3 8

4 2 4 95 3 10

4 1 4 95 4 10

2 1 2 64 2 8

Explanation:

Scope: local (function), enclosing (nested function), global (module), built-in. LEGB rule. Example: variable searched local→enclosing→global→builtin. Understanding prevents shadowing. Namespace hierarchy.

Question 24 Medium Mcq

✓ Correct ✗ Incorrect

What will be the correct output of the following Python code?lis = [11, 22, 33]lis1 = [14, 5, 6]lis2= lis + lis1print (end="")for i in range(0,len(lis2)):print (lis2[i]*1, end=" ")print ("\r")lis3 = lis * 2print (end="")for i in range(0,len(lis3)):print (lis3[i]+1, end=" ")

11 22 33 14 5 612 23 34 12 23 34

11 22 33 14 5 611 22 33 11 22 33

11 22 33 14 5 614 5 6 12 23 34

No output will be displayed.

Explanation:

Enumerate function: enumerate(iterable, start=0) returns (index, value) pairs. Example: for i, x in enumerate(['a','b']): yields (0,'a'), (1,'b'). start parameter shifts indices. Replaces range(len()). Iteration with indices.

Question 25 Easy Mcq

✓ Correct ✗ Incorrect

What is the index of the first item in a tuple or list?

-2147483648

-1

Explanation:

Index of first item in Python tuple or list is 0 (zero-based indexing). First element accessed as my_list[0] or my_tuple[0]. Last element at index -1 (negative indexing from end). Zero-based indexing standard in Python and most programming languages. Understanding indexing essential for sequence access.

Question 26 Medium Mcq

✓ Correct ✗ Incorrect

All Warnings in Python are subclassed from:

AbstractWarning

BaseWarning

Warning

Explanation:

All warnings subclass from Warning class (not BaseException directly). Warning inherits from Exception → BaseException. Warning hierarchy: Warning → UserWarning, DeprecationWarning, etc. Custom warnings should subclass Warning. Standard warning base class.

Question 27 Easy Mcq

✓ Correct ✗ Incorrect

What is a future statement?

A variable assignment for an instance of a class that has not yet been created.

A proposal for a feature that should be implemented in the Python Standard Library in future releases.

A declaration of a method that has not yet been implemented.

A directive to the compiler that a particular module should be compiled using syntax or semantics that will be available in a specified future release of Python.

Explanation:

Future statement imports features from future Python versions. Syntax: from __future__ import feature. Example: from __future__ import division (Python 3 division in Python 2). Must be at file top (after docstring/comments). Enables forward compatibility. Prepares code for future Python versions.

Question 28 Medium Mcq

✓ Correct ✗ Incorrect

The side option of the pack manager may be _____?

LEFT

RIGHT

BOTTOM

All of the above

Explanation:

Use callable(object) to check if object callable. Returns boolean. Example: callable(print) True, callable(5) False. Checks for __call__ method. Functions, methods, classes, lambdas are callable. Instances with __call__ also callable. Callability testing function.

Question 29 Medium Mcq

✓ Correct ✗ Incorrect

What built-in list method would you use to remove items from a list?

.delete() method

Pop(my_list)

Del(my_list)

.pop() method

Explanation:

Use sys.exit(code) to exit program. code 0 indicates success. Example: sys.exit(1) exits with error. Raises SystemExit. Can pass message: sys.exit('error'). exit() and quit() are for interactive use. Program termination control.

Question 30 Medium Mcq

✓ Correct ✗ Incorrect

Which of the following code snippets concatenates the list a_list = [1, 2, 3] with the tuple a_tuple = (4, 5), so the result would be [1, 2, 3, 4, 5]?

a_list + a_tuple

a_list.extend(a_tuple)

a_list.append(a_tuple)

a_list.append(*a_tuple)

Explanation:

Use os.listdir(directory_path) to list directory contents. Returns list of filenames and subdirectories. Does not include '.' and '..'. Example: files = os.listdir('/path'). Alternative: os.scandir() returns directory entries with more info, or pathlib.Path(dir).iterdir() for object-oriented approach. os.listdir() simplest for basic file/folder listing.

Question 31 Medium Mcq

✓ Correct ✗ Incorrect

Python 2.3+ includes a standard module that implements a set datatype. Which of the following statements is true about the set datatype?

A set is an unordered collection of hashable objects.

No object can occur in a set more than once.

A set resembles a dict that has only keys but no values.

All of these.

Explanation:

Use hasattr(obj, 'attr') to check attribute existence. Returns boolean. Example: hasattr(myobj, 'method'). Safe check before access. getattr(obj, 'attr', default) retrieves with default. setattr(obj, 'attr', value) sets attribute. delattr(obj, 'attr') removes. Dynamic attribute access functions.

Question 32 Medium Mcq

✓ Correct ✗ Incorrect

Choose the option below for which instance of the class cannot be created

Anonymous Class

Parent Class

Nested Class

Abstract Class

Explanation:

Reduce function accumulates iterable to single value. Syntax: reduce(function, iterable, initializer). Example: reduce(lambda x,y: x+y, [1,2,3,4]) returns 10. Binary function combines elements. From functools module. Folding operation.

Question 33 Medium Mcq

✓ Correct ✗ Incorrect

What will be the output of this code? [1,2,3] * 3

[3,2,3]

[1, 2, 3, 1, 2, 3, 1, 2, 3]

You will get a type error.

[3,6,9]

Explanation:

Enumerate function adds counter to iterable. Syntax: enumerate(iterable, start=0). Example: list(enumerate(['a','b'])) returns [(0,'a'), (1,'b')]. Start parameter shifts index. Replaces range(len()). Iteration with indices.

Question 34 Medium Mcq

✓ Correct ✗ Incorrect

Which of the following is true regarding urlopen function from the standard module urllib in Python 2?

Open a network object denoted by a URL for reading, but it cannot be used to open local files.

If the connection cannot be made the LookupError exception is raised.

If the connection is successful, this function returns the content of the object as string.

When opening HTTPS URLs, it does not attempt to validate the server certificate.

Explanation:

Use copy.deepcopy for deep copy. Example: new = copy.deepcopy(original). Recursively copies nested objects. Independent copy. Slower than shallow. Handles circular references. Complete duplication.

Question 35 Medium Mcq

✓ Correct ✗ Incorrect

Read the following code snippet: >>> o1 = C() >>> o1.lst = [1,2,3] >>> o3 = copy.deepcopy(o1) >>> o1.lst.append(17) What will be the output of '>>> o3.lst' and '>>> o1.lst'?

[1, 2, 3] and [1, 2, 3, 17]

[1, 2, 3, 17] and [1, 2, 3, 17]

[1, 2, 3] and [1, 2, 3]

None of these

Explanation:

Use __enter__ and __exit__ for context manager. __enter__ called on entering with block, __exit__ on leaving. Example: def __enter__(self): return self; def __exit__(self, exc_type, exc_val, exc_tb): self.close(). Enables with statement. Resource management. Automatic cleanup. Context manager protocol.

Question 36 Medium Mcq

✓ Correct ✗ Incorrect

Which of the following is floor division ?

Explanation:

Relative imports: from . import module (current package), from .. import module (parent package). Example: from .utils import helper. Dot notation for package-relative. Absolute imports: from package.module import item. PEP 328 relative import syntax. Explicit package structure.

Question 37 Medium Mcq

✓ Correct ✗ Incorrect

How can you define a tuple having one element?

(1,)

-1

Explanation:

Define single-element tuple: t = (1,) with trailing comma. Without comma, (1) is just integer with parentheses. Comma makes it tuple. Examples: ('item',), (42,). Empty tuple: (). Two elements: (1,2) no comma needed. Trailing comma distinguishes one-element tuple from parenthesized expression.

Question 38 Medium Mcq

✓ Correct ✗ Incorrect

What will be the output of the following? my_list = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] new_list = list(filter(lambda x: (x%2 == 0) , my_list)) print(new_list)

[1, 3, 5, 6, 9]

[1, 5, 7, 9, 10]

[2, 4, 6, 8, 10]

[0, 4, 6, 8, 10]

Explanation:

Use pathlib.Path for modern file paths. Example: p = Path('dir/file.txt'). Methods: exists(), read_text(), write_text(), mkdir(), unlink(), iterdir(). Object-oriented path handling. Operator / for joining paths. Cross-platform. Python 3.4+ feature. Preferred over os.path.

Question 39 Medium Mcq

✓ Correct ✗ Incorrect

Which of the following functions is used to send audio data via the Internet?

email.MIMEAudio(audiodata [,subtype [,encoder [,**params]]])

email.SendAudio(audiodata [,subtype [,encoder [,**params]]])

email.MIMEAudio.MIMEAudio(audiodata [,subtype [,encoder [,**params]]])

email.MIMEAudio.SendAudio(audiodata [,subtype [,encoder [,**params]]])

Explanation:

Use audiodev module (deprecated) or modern alternatives. Python audio: pyaudio, sounddevice for streaming. socket/urllib for sending over network. Wave module for WAV files. Standard library limited for audio. Third-party libraries recommended. Audio streaming requires specialized protocols, not in stdlib.

Question 40 Medium Mcq

✓ Correct ✗ Incorrect

What will be the correct output of the following Python code?import matha = 3.4536print ("Result = ",end="")print (math.trunc(a)+math.ceil(a)+math.floor(a))

Result = 8

Result = 9

Result = 10

Result = 12

Explanation:

None value: singleton representing null/absence. Type: NoneType. Check: x is None. Functions without return give None. Default parameter value. Only one None instance. Null value representation.

Question 41 Easy Mcq

✓ Correct ✗ Incorrect

What is the method to retrieve the list of all active thread objects?

activethreads()

getThreads()

enumerate()

threads()

Explanation:

Use complex(real, imag) for complex numbers. Example: complex(2, 3) creates 2+3j. complex('2+3j') from string. Supports math operations. real and imag attributes. abs() for magnitude. Complex number creation.

Question 42 Medium Mcq

✓ Correct ✗ Incorrect

On a Unix-like system, what does Python's sleep.time() function block?

The thread.

The process.

Nothing.

It always blocks both.

Explanation:

Use repr(object) for developer representation. Should be unambiguous. Example: repr('hello') returns "'hello'". Calls __repr__ method. Interactive interpreter uses repr(). Goal: recreate object from repr. str() for users, repr() for developers. Debug-friendly representation.

Question 43 Easy Mcq

✓ Correct ✗ Incorrect

When opening a file, what is the difference between text mode and binary mode?

In binary mode, new line characters are converted to an OS-specific representation.

There is no difference.

In text mode, the contents are first decoded using a platform-dependent encoding.

In text mode, carriage returns are always converted to linefeed characters.

Explanation:

Text mode interprets data as strings, handles encoding (UTF-8 default), converts line endings. Binary mode treats data as bytes, no encoding, no line ending conversion. Text: open('file', 'r'), Binary: open('file', 'rb'). Use binary for images, executables. Text for text files. Mode affects read/write behavior.

Question 44 Medium Mcq

✓ Correct ✗ Incorrect

Which statement is true regarding the __all__ module level variable?

It is a list of strings defining all symbols in a module.

It is a dictionary defining all functions in a module.

It is a list of strings defining what symbols in a module will be exported when fromimport * is used on the module.

It is a dictionary defining what functions in a module will be exported when fromimport * is used on the module.

Explanation:

Double underscore __variable: triggers name mangling. Becomes _ClassName__variable. Prevents accidental override in subclasses. Pseudo-private. Example: __secret_method. Still accessible but obscured. Stronger privacy than single underscore.

Question 45 Medium Mcq

✓ Correct ✗ Incorrect

Which of the following is the base language of Python?

Smalltalk

C++

All of the above

Explanation:

Python implemented in C (CPython reference implementation). C is base language. CPython interpreter written in C. Provides C API for extensions. Other implementations: Jython (Java), IronPython (C#), PyPy (RPython). CPython is standard, most widely used. C language foundation enables system integration.

Question 46 Medium Mcq

✓ Correct ✗ Incorrect

Which of the following code samples will determine the last day of a given month?

import datetime datetime.date(year, month, day).replace(day=1,month=datetime.date(year, month, day).month+1)-timedelta(days=1)

import calendar calendar.monthrange(year, month)[1]

import datetime dt = datetime.date(year, month, day) next_month = (dt.month % 12) + 1 end_date = datetime.date(dt.year, next_month, 1) - datetime.timedelta(days=1) return end_date

import calendar calendar.lastday(year, month)

Explanation:

Use enumerate(iterable) for index and value: for i, item in enumerate(mylist): process(i, item). Returns tuple (index, value). Optional start parameter: enumerate(mylist, 1). Example: for i, char in enumerate('hello'): print(i, char). Replaces range(len()). More Pythonic iteration with indices.

Question 47 Medium Mcq

✓ Correct ✗ Incorrect

Which built-in Python function can be used to get the length of a list, tuple, string, dictionary or other object?

lengthof()

length()

len()

sizeof()

Explanation:

Regular expressions: import re. re.match() matches start, re.search() finds anywhere, re.findall() all matches, re.sub() replaces. Compile: pattern = re.compile(r'\d+'). Example: re.search(r'\w+', text). Pattern matching and text processing. Powerful text manipulation.

Question 48 Medium Mcq

✓ Correct ✗ Incorrect

What will be the correct output of the following Python code?def abc():y = 2018if (y % 4) == 0:if (y % 100) == 0:if (y % 400) == 0:print("0")else:print("1")else:print("0")else:print("1")abc()

Explanation:

Generator vs list: generator produces values on-demand (lazy), list stores all (eager). Generators memory efficient. Example: (x for x in range(1000000)) vs [x for x in range(1000000)]. Use generator for large/infinite sequences. Memory vs convenience.

Question 49 Medium Mcq

✓ Correct ✗ Incorrect

Which of these is NOT a characteristic of namedtuples?

You can assign a name to each of the namedtuple members and refer to them that way, similarly to how you would access keys in dictionary.

Each member of a namedtuple object can be indexed to directly, just like in a regular tuple.

Namedtuples are just as memory efficient as regular tuples.

No import is needed to use namedtuples because they are available in the standard library.

Explanation:

Use time.time() for current timestamp. Returns seconds since epoch (1970-01-01). Float with sub-second precision. Example: start = time.time(); duration = time.time() - start. Unix timestamp utility.

Question 50 Medium Mcq

✓ Correct ✗ Incorrect

What are the states/features supported by a RLock object?

Locked

Owning thread

Recursion level

All of the above

Explanation:

Dataclasses (Python 3.7+): @dataclass decorator generates boilerplate. Example: @dataclass class Point: x: int; y: int. Auto-generates __init__, __repr__, __eq__. Reduces code. Type hints required. Simplified class definition. PEP 557 feature.

Showing 50 of 835 questions

Filter by Difficulty

easy medium hard

Track Progress

Difficulty Filter

easy Easy

medium Medium

hard Hard

Other Subjects

Business Finance & Management

Industrial Engineering & Manufacturing

IT & Programming

Design & Multimedia

Content Writing & Translation

Administrative Support

Quick Navigation

Other IT & Programming Subjects

Python - IT & Programming

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Filter by Difficulty

Track Progress

Difficulty Filter

Other Subjects

Other IT & Programming Subjects

Quick Navigation

Similar Practices