Programming questions and solutions that will make you comfortable with basic constructs of Python

Solve these questions to get acquainted with basic syntax of Python programming language.

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.

num_list = []
for x in range(2000, 3201):
    if x%7 == 0 and x%5 != 0:
        num_list.append(x)

print(num_list, sep=",")

Write a program which can compute the factorial of a given numbers.
The results should be printed in a comma-separated sequence on a single line.

def fact_recursion(x):
    x = int(x)
    if x == 1:
        return 1
    else:
        return x*fact_recursion(x-1)


def fact_loop(x):
    x = int(x)
    product = 1
    for num in range(1, x+1):
        product = product*num
    return product

print("Enter number to get its factorial:\n")
num = input()
print(fact_loop(num))
print(fact_recursion(num))

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.

def gen_dict(n):
    num_dict = {}
    n = int(n)
    for i in range(1, n+1):
        num_dict[i] = i*i
    return num_dict


print("Please enter n")
number = input()
print(gen_dict(number))

Write a program which accepts a sequence of comma-separated numbers
from the console and generate a list and a tuple which contains every number.

input_values = input()
num_list = input_values.split(sep=",")


num_tuple = tuple(num_list)


print(num_tuple, type(num_tuple))
print(num_list, type(num_list))

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.

class NewClass:

    def __init__(self):
        self.string_from_console = ""
        print("Object Initialized")

    def get_string(self):
        self.string_from_console = str(input())
        return self.string_from_console

    def print_string(self):
        print(self.string_from_console.upper())


obj = NewClass()
obj.get_string()
obj.print_string()

Write a program that calculates and prints the value according to the given formula:
Q = Square root of [(2 * C * D)/H]
Following are the fixed values of C and H:
C is 50. H is 30.
D is the variable whose values should be input to your program in a comma-separated sequence.

import math
C = 50
H = 30
Q = []
D_list = input().split(',')

for D in D_list:
    D = int(D)
    Q.append(int(math.sqrt((2 * C * D)/H)))

print(Q, sep=",")

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.

r, c = input().split(",")
row = range(0, int(r))
col = range(0, int(c))
matrix = [[0 for co in col] for ro in row]
for i in row:
    for j in col:
        matrix[i][j] = i*j

print(matrix)


import numpy as np


matrix_np = np.zeros([3, 5], dtype=int)
for i in row:
    for j in col:
        matrix_np[i][j] = int(i*j)

print(matrix_np)

Write a program that accepts a comma-separated sequence of words as input
and prints the words in a comma-separated sequence after sorting them alphabetically.

word_list = input().split(",")
word_list.sort()
print(",".join(word_list))


def take_second_character(string):
    return string[1]


word_list_1 = input().split(",")
word_list_1.sort(key=take_second_character)
print(",".join(word_list_1))