M3-R5.1 Practical Paper — Set 1 — Practical Paper

What will be output of: for i in range(3): print(i)?

1 Mark

A 1 2 3
B 0 1 2
C 0 1 2 3
D 1 2

Which function converts a string to uppercase in Python?

1 Mark

A upper()
B toUpper()
C capitalize()
D UP()

How do you read all content of a file into a string?

1 Mark

A f.readlines()
B f.read()
C f.readline()
D f.get()

Which syntax creates a dictionary comprehension?

1 Mark

A {k:v for k,v in dict}
B [k:v for k,v in dict]
C (k:v for k in dict)
D {k,v for dict}

What does list.extend([1,2,3]) do?

1 Mark

A Adds [1,2,3] as one element
B Adds 1, 2, 3 as separate elements
C Replaces the list
D Sorts the list

Global variable inside a function requires keyword?

1 Mark

A public
B global
C static
D extern

Output of: print(list(range(2,10,3)))?

1 Mark

A [2,5,8]
B [2,4,6,8]
C [3,6,9]
D [2,3,4]

Which numpy function finds the mean of an array?

1 Mark

A np.sum()
B np.mean()
C np.avg()
D np.total()

How to check if a key exists in a dictionary d?

1 Mark

A d.has(key)
B key in d
C d.contains(key)
D d.find(key)

String slicing s[::2] does what?

1 Mark

A Reverses string
B Returns every 2nd character
C Returns first 2 chars
D Returns last 2 chars

Python script to add 2 numbers: a=5, b=3, print(a+b) outputs?

1 Mark

A 53
B 8
C 15
D Error

To read a file: open("test.txt","r").read() returns?

1 Mark

A File name
B Entire file content as string
C First line only
D Error

List comprehension [x*2 for x in range(5)] gives?

1 Mark

A [0,1,2,3,4]
B [0,2,4,6,8]
C [2,4,6,8,10]
D [1,2,3,4,5]

try-except block handles?

1 Mark

A Loops
B Exceptions/errors
C Functions
D Imports

To sort a list in descending: list.sort(reverse=True). True or False?

1 Mark

A True
B False
C Only for numbers
D Only for strings

String formatting: f"Name: {name}" is called?

1 Mark

A Concatenation
B f-string formatting
C Template string
D Raw string

with open("file.txt","w") as f: f.write("Hello") does?

1 Mark

A Reads file
B Writes "Hello" to file and auto-closes
C Appends
D Deletes file

dict.get("key", "default") returns "default" when?

1 Mark

A Always
B When key does not exist
C When key exists
D Never

lambda x: x*2 applied to 5 returns?

1 Mark

A 5
B 7
C 10
D 25

numpy array [1,2,3] * 2 gives?

1 Mark

A [1,2,3,1,2,3]
B [2,4,6]
C Error
D [1,2,3,2]

enumerate() in for loop provides?

1 Mark

A Only values
B Index and value pairs
C Only indices
D Only length

zip() function combines?

1 Mark

A Strings only
B Multiple iterables element by element
C Files
D Directories

To check type: isinstance(5, int) returns?

1 Mark

A False
B True
C Error
D 5

list.extend([4,5]) vs append([4,5])?

1 Mark

A Same result
B extend adds each element, append adds list as one element
C extend fails
D append is faster

os.getcwd() returns?

1 Mark

A Home directory
B Current working directory
C Root directory
D Temp directory

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Paper Info

Total Questions: 25
Total Marks: 25
Time: 20 min
Subject: M3-R5.1

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