What will this code do?
import numpy as np
mat = np.array([[1, 2], [4, 5]])
print(round((mat @ np.linalg.inv(mat)).sum()))
Choose the right option for "callables"
class A:
def __init__(self, x):
self.x = x
def __call__(self):
return self.x
class B:
def __init__(self, x):
self.x = x
def method(self):
return self.x
class C:
def __init__(self, x=3):
self.x = x
def __repr__(self):
return str(self.x)
a = A(1)
b = B(2)
c = C(3)
callables = # your code
print([act() for act in callables])
#Output [1, 2, 3]
Choose your answer
Anonymous Quiz
4%
[a, b, C]
19%
[A, B, C]
46%
[a, b.method, C]
0%
[a.__init__, b.method, C]
8%
[a, b, C.__repr__]
4%
TypeError
19%
See solution
👍5
What will this code do?
import numpy as np
A = np.arange(9).reshape(-1, 3)
print(np.linalg.det(A))
👍2
What design pattern is used in this code?
class A: pass
class B: pass
def f(cls, *args):
return cls(*args)
a = f(A)
b = f(B)
Choose your answer
Anonymous Quiz
16%
Decorator
32%
Factory
14%
Module
14%
Facade
9%
Singleton
16%
See solution
👍3
👍2
What needs to be added for the output to be True?
from abc import ABC
class L(ABC): pass
# your code
print(issubclass(tuple, L))
Choose your answer
Anonymous Quiz
19%
L.add(tuple)
9%
L += tuple
9%
L.include(tuple)
19%
L.register(tuple)
16%
L.inherit(tuple)
3%
L.extend(tuple)
25%
See solution
How to import a module if its name is in the module_name variable?
Anonymous Quiz
23%
import module_name
26%
from module_name import *
10%
import importlib; m = importlib.import_module(module_name)
3%
import module; m = module.import(module_name)
10%
from _future_ import module_name
6%
import "module_name"
23%
See solution
👎1
What will this code do?
print(isinstance(True, int), isinstance(True, bool))
Choose your answer
Anonymous Quiz
7%
False False
36%
False True
14%
True False
36%
True True
7%
See solution
What will this code do?
S = 'Hello, Max!'.isalnum()
try:
10/S
except:
print('Buy, Max')
else:
print('See you tomorrow')