Python Practice Problems

Python practice problems help beginners to become experts in a python programming language with a small amount of practice effort.

Program to find permutations of a string

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In this program, we will take a string as input and find permutations of a string using the function.

Steps to solve the program
  1. Take a string as input.
  2. From itertools import permutations to find the permutations of a string.
  3. Print the output.
				
					#Input string
str1 = "CDE"

from itertools import permutations
List = permutations(str1)

for combinations in list(List):
    print (''.join(combinations))

Output :

				
					CDE
CED
DCE
DEC
ECD
EDC
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split and join a string using “-“

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avoid spaces in string and get the total length

Split and join a string using “-“

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In this program, we will take a string as input and split and join a string using “-“.

Steps to solve the program
  1. Take a string as input.
  2. Split the string using split().
  3. Join the splitter string using join().
  4. Print the ouput.
				
					#Input string
str1 = "Sqatools is best"
list1 = str1.split(" ")

#Printing output
print("-".join(list1))

Output :

				
					Sqatools-is-best
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uppercase half string

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find permutations of a given string

Insert space before every capital letter

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In this program, we will take a string as input and insert space before every capital letter appears in a given word.

Steps to solve the program
  1. Take a string as input and create an empty string.
  2. Use for loop to iterate over every character of the string.
  3. Add each character to the empty string.
  4. If a character is Capital letter then add space first then the character.
  5. Print the output.
				
					#Input string
str1 = "SqaTools pyThon"
result = ""

for char in str1:
    if char.isupper():
        result=result+" "+char
    else:
        result=result+char

#Printing output        
print(result)

Output :

				
					Sqa Tools py Thon
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count the number of leap years within the range of years

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uppercase half string

convert half the string to uppercase.

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In this program, we will take a string as input and convert half the string to uppercase.

Steps to solve the program
  1. Take a string as input.
  2. Convert the half of the string upper() and Indexing.
  3. Print the output.
				
					#Input string
str1 = "banana"

#Printing output
print(str1[:3]+str1[3:].upper())

Output :

				
					banANA
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insert space before every capital letter appears in a given word

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split and join a string using “-“

Number of leap years within a range of years

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In this program, we will take a range of leap years as input and find the number of leap years within a range of years.

Steps to solve the program
  1. Take a range of years as input.
  2. Split the range using split() so that will get a list of starting year and ending year.
  3. Create a variable and assign its value equal to 0.
  4. Use for loop to get a range of years between starting year and the ending year.
  5. During iteration check whether a year is a leap year to not.
  6. If it is a leap year then add 1 to the variable that we created at the start.
  7. Print the output.
				
					#Input string
str1 ="1981-2001"
l = str1.split("-")
total = 0

for i in range(int(l[0]),int(l[1])+1):
    if (i % 400 == 0 or i % 100 !=0) and i % 4 == 0:
        total += 1
        
#Printing output
print("Range of years:", str1)
print("Total leap year: ",total)

Output :

				
					Range of years: 1981-2001
Total leap year:  5
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extract name from a given email address

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insert space before every capital letter appears in a given word

Extract the name from the email address

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In this program, we will take email as string input and extract the name from the email address.

Steps to solve the program
  1. Take an email id of a student as string input.
  2. Find the index number of “@” using index().
  3. Create an empty string.
  4. Add characters from the email id to the empty string using for loop up to the index of “@”.
  5. Add only alphabets not numbers use isalpha() for this purpose.
  6. Print the output.
				
					#Input string
str1 = "student1@gmail.com"
index = str1.index("@")
str2 = ""

for char in str1[:index]:
    if char.isalpha():
        str2 += char
        
#Printing output
print(str2)

Output :

				
					student
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add two strings as they are numbers

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count the number of leap years within the range of years

Add two strings as they are numbers

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In this program, we will take two numbers as strings and add two strings as they are numbers.

Steps to solve the program
  1. Take two numbers as a string.
  2. Add two strings after converting them into integers using int().
  3. Print the output.
				
					#Printing output
num1 = "3"
num2 = "7"

result = int(num1)+int(num2)

#Printing output
print(result)

Output :

				
					10
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split a given multiline string into a list of lines

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extract name from a given email address

Split a given multiline string into list of lines

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In this program, we will take a multiline string as input and split a given multiline string into list of lines.

Steps to solve the program
  1. Take a multiline string as input.
  2. Split the string on a new line using split() to convert the given string into a list of lines.
  3. Print the output.
				
					#Input string
str1= "This string Contains\nMultiple\nLines"

#Printing output
print(str1.split("\n"))

Output :

				
					['This string Contains', 'Multiple', 'Lines']
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extract numbers from a given string

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add two strings as they are numbers

Extract numbers from a given string

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In this program, we will take a string as input and extract numbers from a given string.

Steps to solve the program
  1. Take a string as input.
  2. Create an empty list.
  3. Split the given list using split().
  4. Use for loop to iterate over splitter string.
  5. If the value is a number then add it to the empty list.
  6. Print the output.
				
					#Input string
str1 = "python 456 self learning 89"
list1 = []

for char in str1.split(" "):
    if char.isdigit():
        list1.append(int(char))

#Printing output        
print(list1)

Output :

				
					[456, 89]
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find the string similarity between two given strings

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split a given multiline string into a list of lines

Find the string similarity between two strings

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In this program, we will take two strings as input and  find the string similarity between two given strings

Steps to solve te program
  1. Take 2 strings as inputs.
  2. Import difflib library.
  3. From difflib library use SequenceMatcher to find the similarity between two strings.
  4. Print the output.
				
					#Input string
str1 = "Learning is fun in Sqatools"
str2 = "Sqatools Online Learning Platform"

import difflib
result =  difflib.SequenceMatcher(a=str1.lower(), b=str2.lower())

#Printing output
print(result.ratio())

Output :

				
					0.4
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remove unwanted characters from a given string

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extract numbers from a given string