Computer Science

What are the possible outcome(s) executed from the following code ? Also specify the maximum and minimum values that can be assigned to variable PICK.

import random
PICK = random.randint(0, 3)
CITY = ["DELHI", "MUMBAI", "CHENNAI", "KOLKATA"];
for I in CITY :
    for J in range(1, PICK): 
        print(I, end = " ") 
    print()

DELHIDELHI
MUMBAIMUMBAI
CHENNAICHENNAI
KOLKATAKOLKATA
DELHI
DELHIMUMBAI
DELHIMUMBAICHENNAI
DELHI
MUMBAI
CHENNAI
KOLKATA
DELHI
MUMBAIMUMBAI
KOLKATAKOLKATAKOLKATA

Python Libraries

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Answer

DELHI
MUMBAI
CHENNAI
KOLKATA

DELHIDELHI
MUMBAIMUMBAI
CHENNAICHENNAI
KOLKATAKOLKATA

The minimum value for PICK is 0 and the maximum value for PICK is 3.

Explanation

import random — Imports the random module.
PICK = random.randint(0, 3) — Generates a random integer between 0 and 3 (inclusive) and assigns it to the variable PICK.
CITY = ["DELHI", "MUMBAI", "CHENNAI", "KOLKATA"] — Defines a list of cities.
for I in CITY — This loop iterates over each city in the CITY.
for J in range(1, PICK) — This loop will iterate from 1 up to PICK - 1. The value of PICK can be an integer in the range [0, 1, 2, 3]. For the cases when value of PICK is 0 or 1, the loop will not execute as range(1, 0) and range(1, 1) will return empty range.
For the cases when value of PICK is 2 or 3, the names of the cities in CITY will be printed once or twice, respectively. Hence, we get the possible outcomes of this code.

Answered By

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Consider the following code :

import random
print(100 + random.randint(5, 10), end = ' ' ) 
print(100 + random.randint(5, 10), end = ' ' ) 
print(100 + random.randint(5, 10), end = ' ' ) 
print(100 + random.randint(5, 10))

Find the suggested output options 1 to 4. Also, write the least value and highest value that can be generated.

102 105 104 105
110 103 104 105
105 107 105 110
110 105 105 110

View Answer

Consider the following package

music/                        Top-level package
 ├── __init__.py
 ├── formats/                 Subpackage for file format
 │      ├── __init__.py
 │      └── wavread.py
 │      └── wavwrite.py
 │
 ├── effects/                 Subpackage for sound effects
 │      └── __init__.py
 │      └── echo.py
 │      └── surround.py
 │      └── reverse.py
 │
 └── filters/                 Subpackage for filters
     ├── __init__.py
     └── equalizer.py
     └── vocoder.py
     └── karaoke.py

Each of the above modules contain functions play(), writefile() and readfile().

(a) If the module wavwrite is imported using command import music.formats.wavwrite. How will you invoke its writefile() function ? Write command for it.

(b) If the module wavwrite is imported using command from music.formats import wavwrite. How will you invoke its writefile() function ? Write command for it.