IT109 Written Exam 3
What is the output to the code? def outer_fun(a, b): def inner_fun(c, d): return c + d return inner_fun(a, b) res = outer_fun(5, 10) print(res)
15
What is the output of this code? student = {'name': 'John', 'age': 25, 'courses': ['Math', 'Physics', 'Geography', 'History'], 1: {'aa': 1, 'bb': 2}, 'tupl': ('Hi', 'You')} print(student['name'])
John
True or False: Dictionary keys must be immutable
True
True or False: Python function always returns a value
True
True or False: .pop saves the deleted item
True
What is the purpose of **kwargs?
it allows us to pass a variable number of keyword arguments to a Python function.
What is the purpose of *args?
it allows us to pass a variable number of non-keyword arguments to a Python function
What is the purpose of .popitem()?
removes the last inserted item
How to change/add a value in a dictionary:
student['name'] = 'Oliver'
What is the output of this code? student = {'name': 'John', 'age': 25, 'courses': ['Math', 'Physics', 'Geography', 'History'], 1: {'aa': 1, 'bb': 2}, 'tupl': ('Hi', 'You')} print(student[1])
{'aa': 1, 'bb': 2}
What is the output of this code? sampleDict = dict([ ('first', 1), ('second', 2), ('third', 3) ]) print(sampleDict)
{'first': 1, 'second': 2, 'third': 3}
What is the output of this code? student = {("Hi", "You") : 1, "name" : 2, 4 : 3, 3.5 : 4} print(student)
{('Hi', 'You'): 1, 'name': 2, 4: 3, 3.5: 4}
True or False: dictionary keys can only be ints, floats, strings, tuples.
True
True or False: Values can be any datatype
True
What is the output of this code? dict1 = {"key1":1, "key2":2} dict2 = {"key2":2, "key1":1} print(dict1 == dict2)
True
True or False: In python, dictionaries are immutable
False
True or False: Python function doesn't return anything unless and until you add a return statement
False
True or False: This code creates an empty dictionary: sampleDict = dict{}
False
True or False: You call dictionary values by using index
False
True or False: Keys can be a list
False
True or False: The keys AND values are printed when looping through a dictionary
False, only loops through the keys
What is the output of this code? student = {'name': 'John', 'age': 25, 'courses': ['Math', 'Physics', 'Geography', 'History'], 1: {'aa': 1, 'bb': 2}, 'tupl': ('Hi', 'You')} print(student.get('name))
John
does del save the deleted item?
No
What is the output of this code? dict = {4: 5, 6:7, 4:0, 6:1} print(len(dict))
2
How many items does this list have? student = {'name': 'John', 'age': 25, 'courses': ['Math', 'Physics', 'Geography', 'History'], 1: {'aa': 1, 'bb': 2}, 'tupl': ('Hi', 'You')}
5
What is the output of this code? dict1 = {"name": "Mike", "salary": 8000} temp = dict1.pop("age") print(temp)
Error
What is the output of this code? student = {'name': 'John', 'age': 25, 'courses': ['Math', 'Physics', 'Geography', 'History'], 1: {'aa': 1, 'bb': 2}, 'tupl': ('Hi', 'You')} var = del student['age'] print(var)
Error
What is the output of this code? student = {'name': 'John', 'age': 25, 'courses': ['Math', 'Physics', 'Geography', 'History'], 1: {'aa': 1, 'bb': 2}, 'tupl': ('Hi', 'You')} print(student['phone'])
Error
if an index can't find an item, what will it print?
Error
What is the output of this code? import find_index from my_module
Error, because it is not in the right order
What is the output to this code? def fun1(num): return num + 25 fun1(5) print(num)
Error, because the variable is mentioned outside of the function.
What is the output to the code? def display_person(*args): for i in args: print(i) display_person(name="Emma", age="25")
Error, use **kwargs instead
What happens when a dictionary has two identical keys but with different values?
It will only count the first occurrence, but not the second.
What is the output of this code: dict1 = {"name": "Mike", "salary": 8000} temp = dict1.get("age") print(temp)
None
if .get can't find an item, what will it print?
None
What is the output of this code? student = {'name': 'John', 'age': 25, 'courses': ['Math', 'Physics', 'Geography', 'History'], 1: {'aa': 1, 'bb': 2}, 'tupl': ('Hi', 'You')} var2 = student.pop('courses') print(var2)
['Math', 'Physics', 'Geography', 'History']
How to delete a key value pair?
del student['age']
What is the output of this code? student = {'name': 'John', 'age': 25, 'courses': ['Math', 'Physics', 'Geography', 'History'], 1: {'aa': 1, 'bb': 2}, 'tupl': ('Hi', 'You')} print(student.items())
dict_items([('name', 'Oliver'), ('age', 25), ('courses', ['Math', 'Physics', 'Geography', 'History']), (1, {'aa': 1, 'bb': 2}), ('tupl', ('Hi', 'You'))])
What is the output of this code? student = {'name': 'John', 'age': 25, 'courses': ['Math', 'Physics', 'Geography', 'History'], 1: {'aa': 1, 'bb': 2}, 'tupl': ('Hi', 'You')} print(student.keys())
dict_keys(['name', 'age', 'courses', 1, 'tupl'])
What is the output of this code? student = {'name': 'John', 'age': 25, 'courses': ['Math', 'Physics', 'Geography', 'History'], 1: {'aa': 1, 'bb': 2}, 'tupl': ('Hi', 'You')} print(student.values())
dict_values(['Oliver', 25, ['Math', 'Physics', 'Geography', 'History'], {'aa': 1, 'bb': 2}, ('Hi', 'You')])
def display(**kwargs): for i in kwargs: print(i) display(emp="Kelly", salary=9000)
emp salary
How to assign nicknames to imported functions and variables?
from my_module import find_index as fi, test as t
What is the correct function call? def fun1(name, age): print(name, age)
fun1("Emma", age=23) OR fun1(age =23, name="Emma")
