PYTHON 1 - NETACAD

What is the output of the following piece of code if the user enters two lines containing 3 and 2 respectively? x = int(input()) y = int(input()) x = x % y y = y % x print(y) > 1 > 3 > 2 > 0

0

What is the output of the following snippet? def fun(x, y): if x == y: return x else: return fun(x, y-1) print(fun(0,3)) > 1 > 2 > the snippet will cause a runtime error > 0

0

What will be the output of the following snippet? a = 1 b = 0 a = a ^ b b = a ^ b a = a ^ b print (a, b) > 1 1 > 0 0 > 1 0 > 0 1

0 1

What is the output of the following snippet if the user enters two lines containing 3 and 6 respectively? x = input() y = int(input()) print(x * y) > 333333 > 36 > 18 > 666

333333

An operator able to check two values are not equal is code as: > =/= > != > <> > not ==

!=

Which of the following variable names are illegal? (Select two answers) > true > and > TRUE > True

- and - True

Which of the following lines correctly. invoke the function defined below? (Select two answers) def fun(a, b, c=0): #Body of the function. > fun() > fun(0, 1, 2) > fun(b=0, a=0) > fun(b=1)

- fun(0, 1, 2) - fun(b=0, a=0)

Which of the following lines properly starts a function using two parameters, both with zeroed default values? > def fun (a=b=0) : > def fun (a=0, b=0) : > fun fun (a=0, b) : > fun fun (a, b=0) :

def fun (a=0, b=0) :

Which one if the following lines properly starts a parameterless function definition? > def fun: > def fun(): > function fun(): > fun function():

def fun():

Which if the following snippets shows the correct way of handing multiple excepting in a single except clause? > except TypeError, ValueError, ZeroDivisinError: # Some code. > except: (TypeError, ValueError, ZeroDivisinError) # Some code. > except TypeError, ValueError, ZeroDivisinError # Some code. > except: TypeError, ValueError, ZeroDivisinError # Some code. > except: (TypeError, ValueError, ZeroDivisinError): # Some code. > except (TypeError, ValueError, ZeroDivisinError) # Some code.

except: (TypeError, ValueError, ZeroDivisinError):# Some code.

How many hashes(#) will the following snippet send to the console? var = 1 while var < 10: print("#") var = var << 1 > two > eight > four > one

four

The following snippet: def function_1(a): return None def function_2(a): return function_1(a) * functin_1(a) print(function_2(2)) > will output 16 > will crate a runtime error > will output 4 > will output 2

will crate a runtime error

The following snippet: def func_1(a): return a ** a def func_2(a): return func_1(a) * func_1(a) print(func_2(2)) > will output 2 > will output 16 > will output 4 > is erroneous

will output 16

How many element does the lst list contain? lst = [i for i in range(-1, -2)] > two > three > zero > one

zero

What is the output of the following snippet? dct = {} dct['1'] = (1, 2) dct['2'] = (2, 1) for x in dct.keys(): print(dct[x][1], end="") > 21 > (2,1) > 12 > (1,2)

21

What is the output of the following snippet? def ant(): print(var + 1, end ='') var = 1 any() print(var) > 12 > 22 > 11 > 21

21

What is the output of the following snippet if the user enters two lines containing 2 and 4 respectively? x = input() y = input() print(x + y) > 4 > 2 > 6 > 24

24

After execution of the following snippet, the sum of the all vals elements will equal to: vals = [0, 1, 2] vals.insert(0, 1) del vals[1] > 3 > 4 > 2 > 5

4

What is the output o the following snippet? def fun(x): x += 1 return x x = 2 x = fun(x + 1) print(x) > 3 > 5 > the code erroneous > 4

4

What is the output of the following snippet? def fun(inp =2, out =3): return inp * out print(fun(out =2)) > 4 > 6 > 2 > the snippet is erroneous and will cause SyntaxError

4

What is the output of the following snippet? tup = (1, 2, 4, 8) tup = tup[-2:-1] tup = tup[-1] print(tup) > 44 > 4 > (4) > (4,)

4

What is the output of the following snippet? def fun(x): global y y = x * x return y fun(2) print(y) > the code will cause a runtime error > 4 > None > 2

4

What is the output of thee following snippet? def fun(inp=2, out=3): return inp * out print(fn(out =2)) > 2 > 6 > 4 > the snippet is erroneous

4

What is the output of the following snippet if the user enter two lines containing 2 and 4 respectively? x = int(input()) y = int(input()) print(x + y) > 2 > 24 > 4 > 6

6

What is the output of the following snippet? def f(x): if x == 0: return 0 return x + f(x - 1) print(f(3)) > 6 > the code is erroneous > 1 > 3

6

What is the output of the following snippet? t = [[3-i for i in range (3)] for j in range (3)] s = 0 for i in range(3): s += t[i][i] print(s) > 4 > 7 > 02 > 6

6

What is the output of the following piece of the code if the user enter two lines containing 3 and 6 respectively? y = input() x = input() print(x + y) > 36 > 3 > 63 > 6

63

What is the output of the following snippet if the user enters two lines containing 2 and 4 respectively? x = int(input()) y = int(intpu()) x = x / y y = y / x print(y) > 8.0 > the code will cause a runtime error > 4.0 > 2.0

8.0

What is the output of the following snippet? def fun(x, y, x): return x + 2 * y + 3 * z print(fun(0, z=1, y=3)) > 9 > 0 > 3 > the snippet is erroneous

9

The result of the following division: 1 / 1 > is equal to 1.0 > is equal to 1 > cannot be evaluated > cannot be predicted

is equal to 1.0

The following snippet: def func(a, b): reeturn b ** a print(func(b=2, 2)) > will output 4 > will output None > will output 2 > is erroneous

is erroneous

The following snippet: def func(a, b): return a ** a print(func(2)) > is erroneous > will output 2 > will output 4 > will return None

is erroneous

Assuming that my_tuple is a correctly crated tuple, the fact that tuples are immutable means that the following instruction: my_tuple[1] = my_tuple[1] + my_tuple[0] > may be illegal if the tuple contains strings > is illegal > can be executed if and only if the tuple contains at least two elements > is full correct

is illegal

Assuming that my_tuple is a correctly created tuple, the fact that tuples are immutable means that the following instruction: my_tuple[1] = my_tuple[1] + my_tuple[0] > can be executed if and only if the tuple contains at least two elements > is illegal > may be illegal if the tuple contains string > is fully correct

is illegal

The meaning of a positional argument is determined by: > its position within the argument list > its connection with existing variables > its value > the argument's name specified along with its value

its position within the argument list

What is the best definition of a script? > It's an error message generated by the interpreter > It's an error message generated by the compiler > It's a text file that contains which make up a Python program > It's a text file that contains sequences of zeroes and ones

It's a text file that contains which make up a Python program

What is CPython? > It's the default, reference implementation of the C language, written in Python > It's a programming language that is a supperset of the Python, designed to produce C-like performance with code written in Python > It's the default, reference implementation of Python, written in the C language > It's a programming that is a superset of the C language, designed to produce Python-like performance with code written in C

It's the default, reference implementation of Python, written in the C language

What will happen when you attempt to run the following code? print(Hello, World) > The code will raise the AttributeError exception. > The code will raise the systemError exception. > The code will raise the ValueError exception. > The code will print Hello World to the console. > The code will raise the TyepError exception.

The code will raise the systemError exception

What is the expected behavior of the following program? try: print(5/0) break: except: print("Sorry, something went wrong...") except(ValueError, ZeroDivisionError): print("Too bad...") > The program will cause a ValueError exception and output the following message Too bad... > The program will cause a SyntaxError exception > The program will cause a ValueError exception and output a default error message. > The program will raise an exception handle by the first except block. > The program will cause a ZeroDivisionError exception and output the following message: Too bad... > The program will cause a ZeroDivisionError exception and output a default error message.

The program will cause a SyntaxError exception

What is the expected behavior of the following program? foo = (1, 2, 3) foo.index(0) > The program will cause a ValueError exception. > The program will output 1 to the screen. > The program will cause a SyntaxError exception. > The program will cause a TypeError exception. > The program will cause an AttributeError exception.

The program will cause a ValueError exception.

What is the expected behavior of the following program? print("Goodbye!") > The program will output Goodbye! to the screen > The program will generate an error message on the screen > The program will output("Goodbye!") > The program will output "Goodbye!"

The program will generate an error message on the screen

What is the expected behavior of the following program? print("Hello!") > The program will output ("Hello!") to the screen > The program will generate an error message on the screen > The program will output Hello! to the screen > The program will output "Hello!" to the screen

The program will output Hello! to the screen

The value eventually assigned to x is equal to : x = 1 x = x == x > 0 > 1 > True > False

True

What value will be assigned to the x variable? z = 10 y = 0 x = y < z and z > y or y > z and z < y > 1 > 0 > True > False

True

What value will be assignment to the x variable? z = 0 y = 0 x = y < z and z > y or y > z and z < y > False > 0 > 1 > True

True

The print() function can output values of: > not more than five arguments > any number of arguments (including zero) > any number of arguments (excluding zero) > just one argument

any number of arguments (including zero)

What is the output of the following piece of code? print("a", "b", "c", sep="sep") > a b c > abc > asepbsepcsep > asepbsepc

asepbsepc

The \n digraph forces the print() function to: > stop its execution > duplicate the character next to the digraph > break the output line > output exactly two characters: \ and n

break the output line

A built-in function is a function which: > is hidden from programmers > has been placed within your code by another programmer > has to be imported before use > comes with Python, ans is an integer part of Python

comes with Python, ans is an integer part of Python

What do you call a command-line interpreter which lets you interact with your OS and execute Python commands and scripts? > An editor > A console > A compiler > Jython

console

The meaning of the keyword parameter is determined by: > its value > the argument's name specified along with is value > its connection with exiting variables > its position within the argument list

the argument's name specified along with is value

What is the output of the following snippet if the user enter two lines containing 2​​and 4 respectively? x = int(intput()) y = int(intput()) x = x // y y = y //x print(y) > the code will cause a runtime error > 2.0 > 8.0 > 4.0

the code will cause a runtime error

What is the output of the following snippet? def fun(x): if x % 2 == 0: return 1 else: return print(fun(fun(2)) + 1) > 1 > None > The code will cause a runtime error > 2

the code will cause a runtime error

What is the output of the following snippet? my_list = [[0, 1, 2, 3] for i in rage(2)] print(my_list[2][0]) > 1 > 2 > 0 > the snippet will cause a runtime error

the snippet will cause a runtime error

What is the output of the following snippet? y = 2 + 3 * 5. print(Y) > the snippet will cause an execution error > 25. > 17 > 17.0

the snippet will cause an execution error

The fact that tuples belong to sequence types means that: > they can be indexed and sliced like lists > they can be extended using the .append() method > they can be modified using the del instruction > they are actually lists

they can be indexed and sliced like lists

How many elements does the my_list list contain? my_list = [i for i in range(-1, 2)] > two > three > four > one

three

How many hashes(#) will the following snippet send to the console? var = 0 while var < 6: var += 1 if var % 2 == 0: continue print("#") > zero > three > two > one

three

How many hashes(#) will the following snippet send to the console? for i in range(1): print("#") else: print("#") > zero > three > two > one

two

How many stars (*) will the following snippet send to the console? i = 0 while i <= 3 : i += 2 print("+") > three > zero > one > two

two

What is the output of the following snippet? dictionary = {'one': 'two', 'three': 'one', 'two': 'three'} v = dictionary['one'] for k in range(len(dictionary)): v = dictionary[v] print(v) > three > one > ('one', 'two', 'three') > two

two

An operator able to check whether two values are equal is code as: > = > != > == > ===

==

What is the output of the following snippet? dd = {"1": "0", "0": "1"} for x in dd.vals(): print(x, end="") > 0 1 > 1 0 > 0 0 > the code is erroneous(the dict object has no vals() method)

the code is erroneous(the dict object has no vals() method)

How many stars (*) will the following snippet send to the console? i =0 while i < i + 2 : i += 1 print("*") else: print("*") > zero > the snippet will enter an infinite loop, printing one star per line > one > two

the snippet will enter an infinite loop, printing one star per line

How many hashes (*) will the following snippet sent to the console? lst = [[x for x in range(3)] for y in range(3)] for r in range(3): for c in rang(3): if lst[r][c] % 2 != 0: print("#") > nine > zero > three > six

three

The value twenty point twelve times ten raised to the power of eight should be written as: > 20.12*10^8 > 20E12.8 > 20.12E8.0 > 20.12Eo

20.12Eo

Select the true statements? (Select two answer) > Python is a good choice for creating and executing tests for applications > Python 3 is backwards compatible with Python 2 > Python is a good choice for low-level programming e.g., when you want to implement an effective driver > Python is free, open-source, and multiplatform

- Python is a good choice for creating and executing tests for applications - Python is free, open-source, and multiplatform

Which of the following statement are true? (Select two answers) > The result of the / operator is always an integer value. > The ** operator uses right-sided binding. > Adding precedes multiplication. > The right argument of the % operator cannot be zero.

- The ** operator uses right-sided binding. - The right argument of the % operator cannot be zero.

Which of the following statement are true? (Select two answers) > The None value can be assigned to variables > The None value cannot be used outside functions > The​ None value can be used as an argument of arithmetic operators > The None value can be compared with variables

- The None value can be assigned to variables - The None value can be compared with variables

What is true compilation? (Select two answer) > Both you and user must have the compiler to run your code > The code is converted directly into machine code executable by the processor > It tends to be faster than interpretation > It tends to be than interpretation

- The code is converted directly into machine code executable by the processor - It tends to be faster than interpretation

Select the true statements about the try-exception block in relation to the following example. (Select two answers.) try: # Some code is here... except: # some code is here... > if you suspect that a snippet may raise an exception, you should place it in the try block > The code that follows the try statement will be executed if the code in the except clause runs into an error. > The code that follows the except statement will be executed if the code in the try clause runs into an error. > If there is a syntax error in code located in the try block, the except branch will not handle it, and a SyntaxError exception

- if you suspect that a snippet may raise an exception, you should place it in the try block - The code that follows the except statement will be executed if the code in the try clause runs into an error.

Which of the following variable names are illegal and will cause the SystemError exception? (Select two answers) > print > in > for > in

- in - for

A function defined in the following way: (Select two answers) def function(x=0): return x > may be invoked with exactly one argument > must be invoked with exactly one argument > must be invoked without any argument > may be invoked without any argument

- may be invoked with exactly one argument - may be invoked without any argument

Which of the following sentences are true about the code? (Select two answers) nums = [1, 2, 3] vals = nums > nums and vals are different names of the same list > vals is longer tha nums > nums and vals are different lists > nums has the same length as vals

- nums and vals are different names of the same list - nums has the same length as vals

Take a look at the snippet, and choose the true statements: (Select two answer) nums = [1, 2, 3] vals = nums del vals[1:2] > nums is longer than vals > nums and vals are of the same length > nums and vals refer to the same list > nums is replicated and assigned to vals

- nums and vals are of the same - nums and vals refer to the same list

Which of the following sentences are true? (Select two answers) nums = [1, 2, 3] vals = nums[-1:-2] > nums and vals are two different lists > vals is longer than nums > nums and vals are of the same length > numsis longer than vals

- nums and vals are two different lists - numsis longer than vals

Left-sided binding determines that the result of the following expression: 1 // 2 * 3 is equal to : > 0.0 > 0 > 4.5 > 0.166666666666666666

0

What is the output of the following code if the user enters a 0 ? try: value = input("Enter a value: ") print(int(value) / len(value)) except ValueError: print("Bad input...") except ZeroDivisionError: print("Very bad input...") except TypeErrorq: print("Very very bad input...") except: print("Booo!") > Very bad input... > Very very bad input... > Bad input... > Booo! > 0.0 > 1.0

0.0

What is the output of the following piece of code? x = 1 // 5 + 1 / 5 print(x) > 0.0 > 0 > 0.4 > 0.2

0.2

What is the output of the following snippet? my_list = [3, 1, -2] print(my_list[my_list(-1)]) > -2 > -1 > 3 > 1

1

What is the output of the following piece of code? x = 1 y = 2 x, y z = x, x, y z, y, z = x, y, z print(x, y, z) > 2 1 2 > 1 2 2 > 1 1 2 > 1 2 1

1 1 2

What is the output of the following snippet? z = y = x = 1 print(x, y, z, sep='*') > 1 1 1 > x*y*z > 1*1*1 > x y z

1*1*1

What is the output of the following snippet? x = 1 / 2 + 3 // 3 + 4 **2 print(x) > 8.5 > 0 > 17.5 > 17

17.5

What is the output of the following snippet? a = 1 b = 0 c = a & b d = a | be = a ^ b print(c + d + e) > 1 > 0 > 3 > 2

2

What is the output of the following snippet? def fun(x): if c % 2 == 0: return 1 else: return 2 print(fun(fun(2))) > 2None > 1 > the code will cause a runtime error > 2

2

What is the output of the following snippet? tup = (1, 2, 4, 8) tup = tup[1:-1] tup = tup[0] print(tup) > the snippet is erroneous > (12) > (2, ) > 2

2

What is the output of the following snippet? x = 1 y = 2 z = x x = y y = z print (x, y) > 1 2 > 1 1 > 2 2 > 2 2

2 2

What is the output of the following piece of code if the user enters two lines containing 2 and 4 respectively? x = float(input()) y = float(input()) print(y **(1 / x)) > 4.0 > 2.0 > 0.0 > 1.0

2.0

What is machine code? > A high-level programming language consisting of instruction lists that humans can read and understand > A medium-level programming language consisting of the assembly code designed for the computer processor > A low-level programming language consisting of binary digits/bits that the computer reads and understands > A low-level programming language consisting of hexadecimal digits that make up high-level language instructions

A low-level programming language consisting of binary digits/bits that the computer reads and understands

What do you call a file containing a program written in a high-level programming language? > A machine file > A code file > A target file > A source file

A source file

What are the four fundaments elements the make a language? > An alphabet, morphology, phonetics, and semantics > An alphabet, a lexis, a syntax, and semantics > An alphabet, a lexis, phonetics, and semantics > An alphabet, phonetics, phonology, and semantics

An alphabet, a lexis, a syntax, and semantics

What is the output of the following code? try: value = input("Enter a value: ") print(value/value) except: print("Bad input...") except ZeroDivisionError: print("Very bad input...") except TypeError: print("Very very bad input...") except: print("Booo!") > Booo! > Bad input... > Very very bad input... > Very bad input...

Very very bad input...

What is the output of the following snippet? my_list = [x * x for x in range (5)] def fun(lst): del lst[lst[2]] return lst print(fun(my_list)) > [0 , 1, 4, 9] > [0, 1, 4, 16] > [0, 1, 9, 16] > [1, 4, 9, 16]

[0 , 1, 4, 9]

What is the output of the following snippet? my_list = [1, 2, 3] for v in range(len(my_list)): my_list.insert(1, my_list[v]) print(my_list) > [1, 2, 3, 1, 2, 3] > [1, 2, 3, 3, 2, 1] > [1, 1, 1, 1, 2, 3] > [3, 2, 1, 1, 2, 3]

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

What is the output of the following snippet? my_list = [1, 2] for v in range(2): my_list.insert(-1, my_list[v]) print(my_list) > [1, 2, 2, 2] > [1, 2, 1, 2] > [2, 1, 1, 2] > [1, 1, 1, 2]

[1, 1, 1, 2]

What is the output of the following snippet? my_list = [1, 2, 3, 4] print(my_list[-3:-2]) > [2, 3] > [2, 3, 4] > [] > [2]

[2]

What is the output of the following snippet? my_list_1 = [1, 2, 3] my_list_2 = [] for v in my_list_1: my_list_2.insert(0, v) print(my_list_2) > [1, 2, 3] > [3, 2, 1] > [3, 3, 3] > [1, 1, 1]

[3, 2, 1]

What is the output of the following snippet? my_list = ['Mary', 'had', 'a', 'little', 'lamb'] def my_list(my_list): del my_list[3] my_list[3] = 'ram' print(my_list(my_list)) > ['Mary', 'had', 'a' ,'lamb'] > ['Mary', 'had', 'a' ,'ram'] > ['Mary', 'had', 'a' ,'little', 'lamb'] > no output, the snippet is erroneous

no output, the snippet is erroneous

Take a look at the snippet and choose the true statement: nums = [1, 2, 3] vals = nums del vals[:] > the snippet will cause a runtime error > vals is longer than nums > nums is longer than vals > nums and vals have the same length

nums and vals have the same length

The 80 prefix means that the number after it is denoted as: > hexadecimal > octal > decimal > binary

octal

How many stars(#) will the following snippet send to the console? var = 0 while i <= 5: i += 1 if vi % 2 == 0: break print("*") > three > two > one > zero

one

What is the output of the following snippet? dct = {'one': 'two', 'three': 'one', 'two': 'three'} v = dct['three'] for k in range(len(dct)): v = dct[v] print(v) > two > ('one', 'two', 'three') > three > one

one

The ** operator: > does not exist > performs duplicated multiplication > performs exponentiation > perform floating-point multiplication

performs exponentiation

What code would you insert instead of the comment to obtain the expected output? Expected output: a b c Code: dictionary = {} my_list = ['a', 'b', 'c', 'd'] for i in range(len(my_list) - 1): dictionary[my_list[i]] = (my_list[i], ) for i in sorted(dictionary.key()): k = dictionary[i] # Insert your code here. > print(k["0"]) > print(k['0']) > print(k) > print(k[0])

print(k[0])

The second assignment: vals = [0, 1, 2] vals[0], vlas[2] = vals[2], vals[0] > doesn't change the list > reverses the list > shortens the list > extends the list

reverses the list