Python Conditional Statements and loops
This resource offers a total of 220 Python conditional statements and loops problems for practice. It includes 44 main exercises, each accompanied by solutions, detailed explanations, and four related problems.
[An Editor is available at the bottom of the page to write and execute the scripts.]
1. Divisible by 7 and Multiples of 5
Write a Python program to find those numbers which are divisible by 7 and multiples of 5, between 1500 and 2700 (both included).
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2. Temperature Converter
Write a Python program to convert temperatures to and from Celsius and Fahrenheit.
[ Formula : c/5 = f-32/9 [ where c = temperature in celsius and f = temperature in fahrenheit ]
Expected Output :
60°C is 140 in Fahrenheit
45°F is 7 in Celsius
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3. Number Guessing Game
Write a Python program to guess a number between 1 and 9.
Note : User is prompted to enter a guess. If the user guesses wrong then the prompt appears again until the guess is correct, on successful guess, user will get a "Well guessed!" message, and the program will exit.
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4. Construct Pattern (Diamond Pattern)
Write a Python program to construct the following pattern, using a nested for loop.
*
* *
* * *
* * * *
* * * * *
* * * *
* * *
* *
*
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5. Reverse a Word
Write a Python program that accepts a word from the user and reverses it.
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6. Count Even and Odd Numbers
Write a Python program to count the number of even and odd numbers in a series of numbers
Sample numbers : numbers = (1, 2, 3, 4, 5, 6, 7, 8, 9)
Expected Output :
Number of even numbers : 5
Number of odd numbers : 4
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7. Print Items with Types
Write a Python program that prints each item and its corresponding type from the following list.
Sample List : datalist = [1452, 11.23, 1+2j, True, 'w3resource', (0, -1), [5, 12], {"class":'V', "section":'A'}]
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8. Print Numbers 0 to 6 Except 3 and 6
Write a Python program that prints all the numbers from 0 to 6 except 3 and 6.
Note : Use 'continue' statement.
Expected Output : 0 1 2 4 5
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9. Fibonacci Series Between 0 and 50
Write a Python program to get the Fibonacci series between 0 and 50.
Note : The Fibonacci Sequence is the series of numbers :
0, 1, 1, 2, 3, 5, 8, 13, 21, ....
Every next number is found by adding up the two numbers before it.
Expected Output : 1 1 2 3 5 8 13 21 34
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10. FizzBuzz Variation
Write a Python program that iterates the integers from 1 to 50. For multiples of three print "Fizz" instead of the number and for multiples of five print "Buzz". For numbers that are multiples of three and five, print "FizzBuzz".
Sample Output :
fizzbuzz
1
2
fizz
4
buzz
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11. Two-Dimensional Array (Multiplication Table)
Write a Python program that takes two digits m (row) and n (column) as input and generates a two-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.., m-1
j = 0,1, n-1.
Test Data : Rows = 3, Columns = 4
Expected Result : [[0, 0, 0, 0], [0, 1, 2, 3], [0, 2, 4, 6]]
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12. Sequence of Lines to Lowercase
Write a Python program that accepts a sequence of lines (blank line to terminate) as input and prints the lines as output (all characters in lower case).
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13. Filter 4-Digit Binary Numbers Divisible by 5
Write a Python program that accepts a sequence of comma separated 4 digit binary numbers as its input. The program will print the numbers that are divisible by 5 in a comma separated sequence.
Sample Data : 0100,0011,1010,1001,1100,1001
Expected Output : 1010
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14. Count Digits and Letters in a String
Write a Python program that accepts a string and calculates the number of digits and letters.
Sample Data : Python 3.2
Expected Output :
Letters 6
Digits 2
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15. Password Validity Checker
Write a Python program to check the validity of passwords input by users.
Validation :
- At least 1 letter between [a-z] and 1 letter between [A-Z].
- At least 1 number between [0-9].
- At least 1 character from [$#@].
- Minimum length 6 characters.
- Maximum length 16 characters.
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16. Numbers with All Even Digits
Write a Python program to find numbers between 100 and 400 (both included) where each digit of a number is an even number. The numbers obtained should be printed in a comma-separated sequence.
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17. Alphabet Pattern 'A'
Write a Python program to print the alphabet pattern 'A'.
Expected Output:
*** * * * * ***** * * * * * *
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18. Alphabet Pattern 'D'
Write a Python program to print the alphabet pattern 'D'.
Expected Output:
**** * * * * * * * * * * ****
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19. Alphabet Pattern 'E'
Write a Python program to print the alphabet pattern 'E'.
Expected Output:
***** * * **** * * *****
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20. Alphabet Pattern 'G'
Write a Python program to print the alphabet pattern 'G'.
Expected Output:
*** * * * * *** * * * * ***
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21. Alphabet Pattern 'L'
Write a Python program to print the alphabet pattern 'L'.
Expected Output:
* * * * * * *****
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22. Alphabet Pattern 'M'
Write a Python program to print the alphabet pattern 'M'.
Expected Output:
* * * * * * * * * * * * * * * * *
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23. Alphabet Pattern 'O'
Write a Python program to print the alphabet pattern 'O'.
Expected Output:
*** * * * * * * * * * * ***
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24. Alphabet Pattern 'P'
Write a Python program to print the alphabet pattern 'P'.
Expected Output:
**** * * * * **** * * *
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25. Alphabet Pattern 'R'
Write a Python program to print the alphabet pattern 'R'.
Expected Output:
**** * * * * **** * * * * * *
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26. Mixed Patterns
Write a Python program to print the following patterns.
Expected Output:
****
*
*
***
*
*
****
ooooooooooooooooo
ooooooooooooooooo
ooooooooooooooooo
oooo
oooo
oooo
ooooooooooooooooo
ooooooooooooooooo
ooooooooooooooooo
oooo
oooo
oooo
ooooooooooooooooo
ooooooooooooooooo
ooooooooooooooooo
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27. Alphabet Pattern 'T'
Write a Python program to print the alphabet pattern 'T'.
Expected Output:
***** * * * * * *
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28. Alphabet Pattern 'U'
Write a Python program to print the alphabet pattern 'U'.
Expected Output:
* * * * * * * * * * * * ***
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29. Alphabet Pattern 'X'
Write a Python program to print the alphabet pattern 'X'.
Expected Output:
* * * * * * * * * * * * *
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30. Alphabet Pattern 'Z'
Write a Python program to print the alphabet pattern 'Z'.
Expected Output:
*******
*
*
*
*
*
*******
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31. Dog Age in Dog Years
Write a Python program to calculate a dog's age in dog years.
Note: For the first two years, a dog year is equal to 10.5 human years. After that, each dog year equals 4 human years.
Expected Output:
Input a dog's age in human years: 15 The dog's age in dog's years is 73
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32. Vowel or Consonant Checker
Write a Python program to check whether an alphabet is a vowel or consonant.
Expected Output:
Input a letter of the alphabet: k k is a consonant.
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33. Month Name to Number of Days
Write a Python program to convert a month name to a number of days.
Expected Output:
List of months: January, February, March, April, May, June, July, August , September, October, November, December Input the name of Month: February No. of days: 28/29 days
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34. Sum with Special Rule
Write a Python program to sum two integers. However, if the sum is between 15 and 20 it will return 20.
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35. String Represents Integer Checker
Write a Python program that checks whether a string represents an integer or not.
Expected Output:
Input a string: Python The string is not an integer.
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36. Triangle Type Checker
Write a Python program to check if a triangle is equilateral, isosceles or scalene.
Note :
An equilateral triangle is a triangle in which all three sides are equal.
A scalene triangle is a triangle that has three unequal sides.
An isosceles triangle is a triangle with (at least) two equal sides.
Expected Output:
Input lengths of the triangle sides: x: 6 y: 8 z: 12 Scalene triangle
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37. Season Finder from Date
Write a Python program that reads two integers representing a month and day and prints the season for that month and day.
Expected Output:
Input the month (e.g. January, February etc.): july Input the day: 31 Season is autumn
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38. Astrological Sign Finder
Write a Python program to display the astrological sign for a given date of birth.
Expected Output:
Input birthday: 15 Input month of birth (e.g. march, july etc): may Your Astrological sign is : Taurus
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39. Chinese Zodiac Sign
Write a Python program to display the sign of the Chinese Zodiac for the given year in which you were born.
Expected Output:
Input your birth year: 1973 Your Zodiac sign : Ox
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40. Median of Three Values
Write a Python program to find the median of three values.
Expected Output:
Input first number: 15 Input second number: 26 Input third number: 29 The median is 26.0
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41. Next Day Calculator
Write a Python program to get the next day of a given date.
Expected Output:
Input a year: 2016 Input a month [1-12]: 08 Input a day [1-31]: 23 The next date is [yyyy-mm-dd] 2016-8-24
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42. Sum and Average of n Integers
Write a Python program to calculate the sum and average of n integer numbers (input from the user). Input 0 to finish.
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43. Multiplication Table
Write a Python program to create the multiplication table (from 1 to 10) of a number.
Expected Output:
Input a number: 6 6 x 1 = 6 6 x 2 = 12 6 x 3 = 18 6 x 4 = 24 6 x 5 = 30 6 x 6 = 36 6 x 7 = 42 6 x 8 = 48 6 x 9 = 54 6 x 10 = 60
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44. Nested Loop Number Pattern
Write a Python program to construct the following pattern, using a nested loop number.
Expected Output:
1 22 333 4444 55555 666666 7777777 88888888 999999999
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More to Come !
Do not submit any solution of the above exercises at here, if you want to contribute go to the appropriate exercise page.