
Python (EUSS 2021) last
Quiz
•
Computers
•
University
•
Practice Problem
•
Medium
joancarles fernàndez
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Què posaríem dins el parèntesi per mostrar el segon element de "fruites" en el següent codi:
fruites = ["poma", "platan", "pera"]
print(------------------------------------)
fruites[1]
fruites[0]
fruites[-3]
fruites[-1]
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Quin dels següents noms és vàlid com a identificador de variable?
VarPrimera
while
1raVariable
Prim.Var
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Amb quina instrucció modificarem el segon element de "fruites"? definides com:
fruites=("platan", "pera", "poma", "pressec")
No es pot modificar
fruites(1)="kiwi"
fruites(2)="kiwi"
fruites(-3)="kiwi"
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Què posaríem dins el parèntesi per mostrar el segon element de "fruites" ("platan") en el següent codi?:
fruites = ("poma", "platan", "pera","kiwi","llimona")
print(------------------------------------)
fruites[-2]
fruites(2)
fruites[1]
fruites(-3)
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
En Python, la següent estructura de dades
fruites={"poma", "taronja", "meló"}
és..
tuple
set
list
array
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
com canviarem a l'estrucutra "fruites" el valor "poma" per "llimona"? definida com:
fruites = ["poma", "llimona", "raïm"]
fruites[0]="llimona"
fruites[1]="llimona"
No podem per què ja hi ha un element "llimona"
Aquesta estructura no permet fer modificacions
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Quina diferència hi ha entre les dues instruccions següents?
f = open("fitxer.dat","tw+")
f = open("fitxer.dat", "tr+")
El primer cas només permet escriure
Són dues maneres d'indicar el mateix
El segon cas no més permet llegir
Ambdós casos permeten escriure i llegir però el primer cas perdria el contingut del fitxer que tingués prèviment
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