Python Programming Exercise

Description:

Here, I have been listing programming exercise in Python and they are more challenging with interesting questions for all leveled Python Programmers.

Question_1:

Description:

Write a program which will find all such numbers which are divisible by 7 but are not a multiple of 5, between 2000 and 3200 (both included). The numbers obtained should be printed in a comma-separated sequence on a single line.

Hints: Consider use range(#begin, #end, #step) method.

numbers = range(2000, 3201)
sorted_numbers = []

for i in numbers:
    if i % 7 == 0 and i % 5 != 0:
        sorted_numbers.append(i)
print(sorted_numbers)

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Question_2:

Description:

Question: Write a program which can compute the factorial of a given numbers. Suppose the following input is supplied to the program: 8 Then, the output should be:

Hints: In case of input data being supplied to the question, it should be assumed to be a console input.

Solution 1:

def fact_1(x):
    b = 1
    for a in range(1, x+1):
        b *= a
    return b
x = int(input())
print(fact_1(x))

Solution 2:

def fact_2(x):
    if x == 0:
        return 1
    return x * fact_2(x - 1)

x=int(input())
print (fact_2(x))

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Question_3:

Description:

With a given integral number n, write a program to generate a dictionary that contains (i, i*i) such that is an integral number between 1 and n (both included). and then the program should print the dictionary. Suppose the following input is supplied to the program:
8
Then, the output should be:
{1: 1, 2: 4, 3: 9, 4: 16, 5: 25, 6: 36, 7: 49, 8: 64}

Hints: In case of input data being supplied to the question, it should be assumed to be a console input.
Consider use dict()

def prog_1(x):
    dict_ = dict()
    for a in range(1, x+1):
        dict_[a] = a*a
    print(dict_.__str__())
prog_1(int(input()))

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Question_4:

Description:

Question:
Write a program which accepts a sequence of comma-separated numbers from console and generate a list\ and a tuple which contains every number.
Suppose the following input is supplied to the program:
34,67,55,33,12,98
Then, the output should be:
['34', '67', '55', '33', '12', '98']
('34', '67', '55', '33', '12', '98')\

Hints: In case of input data being supplied to the question, it should be assumed to be a console input. tuple() method can convert list to tuple

def prog_2():
    x = input()
    l = []
    for a in x.split(","):
        l.append(a)
        print(x)
    t = tuple(l)
    print(l)
    print(t)
prog_2()

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Question_5:

Description:

Define a class which has at least two methods:\

• getString: to get a string from console input
• printString: to print the string in upper case.
• Also please include simple test function to test the class methods.

Hints: Use init method to construct some parameters

class Class_1:
    def __init__(self, str_):
        self.str_ = str_

    def getString(self):
        print("Enter string:")
        self.str_ = input()
        return

    def printString(self):
        return print(self.str_)

x = Class_1("Salom, Doston")
x.printString()

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Question_6:

Description:

Write a program which takes 2 digits, X,Y as input and generates a 2-dimensional array. The element value
in the i-th row and j-th column of the array should be i*j.
Note: i=0,1.., X-1; j=0,1,¡­Y-1.
Example
Suppose the following inputs are given to the program:
3,5 Then, the output of the program should be:
[[0, 0, 0, 0, 0], [0, 1, 2, 3, 4], [0, 2, 4, 6, 8]] \

Hints: Note: In case of input data being supplied to the question, it should be assumed to be a console input in a comma-separated form.

def two_dimens_arr(x, y):
    l1 = []
    for a in range(x):
        l1.append([])
        for b in range(y):
            d = a * b
            l1[a].append(a*b)
    print(l1)
    return
two_dimens_arr(4, 4)

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