Test
Week 17
Crea una cuenta gratis para terminar este test
Guarda tu progreso y consulta tu resultado final.
¿Ya tienes cuenta? Inicia sesión
Preguntas del test (37)
1What is the Python equivalent to try...catch in Javascript?
- Atry...exception
- Btry...raise
- Ctry...except
- D...
- Etry...catch
2Strings are sequences in Python. This means they have many functions that arrays have in JavaScript. For example, len() and join().
What type of error occurs if the join function for strings is called with some elements which are not strings?- ARuntimeError
- BJoinError
- CSyntaxError
- DTypeError
3print(34 % 5)
- A0
- B4
- C5
- D6
4print(3 ** 2)
- A6
- B8
- C9
5print(8.0 / 2.0)
- A4
- B4.0
6print(5 / 2)
- A2
- B3
- C2.5
7print(9 ** 4)
- A6561
- B95
- C35
- D13
8print(34 // 5)
- A4
- B5
- C0
- D6
9print(5 // 2)
- A2
- B3
- C2.5
10print(2 ** 3)
- A8
- B6
- C9
11True or False: Only individual characters in a string may be referenced by index.
- AVerdadero
- BFalso
12print('internet'.index('x'))
- A-3
- B6
- Cerror
- D-1
- E5
13print('run'[3])
- Arun
- Berror
- Cempty string
- Dundefined
- En
14print('run'[-1:2])
- Arun
- Bempty string
- Cundefined
- Dn
15print('internet'.indexOf('e'))
- Aerror
- B'3,6'
- C6
- D3
16print('run'.length);
- Aerror
- B3
- C2
- D1
17print('internet'.index('e'))
- A3
- B6
- Cerror
- D'3,6'
18print('run'[-2,-1])
- Aempty string
- Bu
- Cun
- Derror
- Eundefined
19print('run'[2])
- Au
- Bn
- Cempty string
- Derror
- Er
20print('internet'.index('net'))
- A-1
- B5
- C6
- Derror
- E-3
21Which of the following will throw an error in Python if you try to use it to specify a string?
- A'
- B"
- C'''
- D`
22print('run'[-1])
- Ar
- Bundefined
- Cn
- Dempty string
- Eu
- Ferror
23print(len('run'));
- Aerror
- B1
- C2
- D3
24nums = ['1','2','3','4','5','4','3','2','1']
print(sum(nums))- A25
- B1
- Cerror
- D5
- E15
25nums = 1,2,3,4,5
print(sum(nums))- Aerror
- B15
- C1
- D5
26Which of these best describes a tuple?
- AOrdered, mutable
- BUnordered, immutable
- COrdered, immutable
- DUnordered, mutable
27What does it mean that a dictionary is a mappable collection?
- AElements are referenced with a string index
- BElements are referenced with a numeric index
- CElements have no reference because they are unordered
- DElements are referenced with a hashable value
28Which of these best describes a list?
- AUnordered, immutable
- BOrdered, mutable
- COrdered, immutable
- DUnordered, mutable
29nums = [1, 6, 7, 9, 2]
print(sorted(nums)[4:])- A[9]
- B[1,2,6,7,9]
- C[1,6,7,9]
- D[1,6,7,9,2,'4:']
- E9
- Ferror
30Which of these best describes a dictionary?
- AOrdered, immutable
- BOrdered, mutable
- CUnordered, mutable
- DUnordered, immutable
31Which of these is a feature that makes sets different from other data structures?
- AString can be elements in a set
- BEach element is unique
- CSets are iterable
- DSets can only be defined with a built-in function
32nums = set([1,2,3,4,5,4,3,2,1])
print(sum(nums))- A15
- B5
- C1
- Derrror
- E25
33Which of these best describes a set?
- AUnordered, immutable
- BOrdered, mutable
- CUnordered, mutable
- DOrdered, immutable
34nums = [1,6,4.3,7,-8,9,2]
sorted(nums)
print(nums[4:])- A[-8, 2, 9]
- B[4, 6, 7, 9]
- C[6, 7, 9]
- Dthis code throws an error
- E[-8, 9, 2]
- F[-8, 2, 7, 9]
35Specifying ranges of a string or list can be done from the end of the iterable to the beginning ([-1:4]).
- AVerdadero
- BFalso
36Tuples are ordered.
- AVerdadero
- BFalso
37If you search a string or list for an index of a value, but that value does not exist, what type of error is thrown?
- ANo error, just returns an empty string or list.
- BSyntaxError
- CTypeError
- DValueError
Información
- Descripción
- Computer Science Test sobre Week 17, creado por Beep Boop el 04/12/2020.
- Autor
- Beep Boop
- Idioma
- English
- Visitas
- 3
- Etiquetas
- Valoración
- Aún sin valoraciones Valora este test