Python Institute PCAP-31-03 問題練習

Question No : 1
What is the expected output of the following code?

• A.3
• B.5
• C.4
• D.an exception is raised

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Question No : 2
What is true about Python packages? (Select two answers)

• A.the sys.path variable is a list of strings
• B._pycache_is a folder that stores semi-completed Python modules
• C.a package contents can be stored and distributed as an mp3 file
• D.a code designed to initialize a package's state should be placed inside a file named init.py

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Question No : 3
What is the expected output of the following code?
def foo(x,y,z):
return x(y) - x(z)
print{f00(lambda x: x % 2, 2, 1) )

• A.1
• B.0
• C.-1
• D.an exception is raised

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Question No : 4
Which of the following lines of code will work flawlessly when put independently inside the add_new () method in order to make the snippet's output equal to [0, 1, 1]? (Select two answers)

• A.put self.store(1])
• B.self put stire(1])
• C.self .put self.get () [-1])
• D.self .put (self.store[1])

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Question No : 5
The following expression
1+-2
is:

• A.equal to 1
• B.invalid
• C.equal to 2
• D.equal to -1

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Question No : 6
What is the expected output of the following snippet?

• A.abc
• B.The code will cause a runtime exception
• C.ABC
• D.123

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Question No : 7
An operator able to perform bitwise shifts is coded as (select two answers)

• A.- -
• B.++
• C.<<
• D.>>

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正解:
Explanation:
Reference: https://www.geeksforgeeks.org/basic-operators-python/

Question No : 8
What can you do if you don’t like a long package path like this one?

• A.you can make an alias for the name using the alias keyword
• B.nothing, you need to come to terms with it
• C.you can shorten it to alpha. zeta and Python will find the proper connection
• D.you can make an alias for the name using the as keyword

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正解:
Explanation:
Reference: https://stackoverflow.com/questions/706595/can-you-define-aliases-for-imported-modules-in-python

Question No : 9
Assuming that the V variable holds an integer value to 2, which of the following operators should be used instead of OPER to make the expression equal to 1?
V OPER 1 -

• A.<<<
• B.>>>
• C.>>
• D.<<

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Question No : 10
What is the expected behavior of the following code?

• A.it outputs 1
• B.it outputs 2
• C.the code is erroneous and it will not execute
• D.it outputs 3

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Question No : 11
What will be the value of the i variable when the while e loop finishes its execution?

• A.1
• B.0
• C.2
• D.the variable becomes unavailable

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Question No : 12
Which of the following expressions evaluate to True? (Select two answers)

• A.str(1-1) in '012345£739'[:2]
• B.'phd' in 'alpha'
• C.'deb' not in 'abcde' [::-1]
• D.'True' not in 'False'

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Question No : 13
Assuming that the code below has been executed successfully, which of the following expressions evaluate to True? (Select two answers)

• A.'var' in Object.__dict__
• B.'prop' in Class.__dict
• C.len(Object.__diet__) == 1
• D.'var1 in Class, dict

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Question No : 14
What is a true about python class constructors? (Select two answers)

• A.the constructor must have at least one parameter
• B.the constructor must return a value other than None
• C.the constructor is a method named_init_
• D.there can the more than one constructor in a Python class.

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Question No : 15
Assuming that the math module has been successfully imported, which of the following expressions evaluate to True? (Select two answers)

• A.math. hypot (3,4) == math.sqrt (25)
• B.math. hypot (2,5) == math.truec (2.5)
• C.math. hypot (2,5) == math.true (2.5)
• D.math. cell (2,5) == math.floor (2.5)

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