Python String Problems Archives - Page 8 Of 11

Floating numbers up to 3 decimal places.

In this program, we will take a number as input and print floating numbers up to 3 decimal places, and convert the number to a string.

Steps to solve the program

Take a floating number as input.
Create an empty string.
Use the round() function to round up the given floating number up to 3 decimal places.
Conver rounded number to a string using str() and add it to the empty string.
Print thee output.

				
					#Input string
num = 2.14652
result = ""

#Rounding number
result += str(round(num, 3))

#Printing output
print(result)

Output :

				
					2.147

split and join a string

convert numeric words to numbers.

Split and join a string

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

Steps to solve the program

Take a string as input.
Split the given string using Split().
Join the splitter string using join() and “–“.
Print the output.

				
					#input string
string = "Hello world"

#Splitting the string
new_str = string.split(" ")
print(new_str)

#Joinin using -
print("-".join(new_str))

Output :

				
					['Hello', 'world']
Hello-world

remove a new line from a string

print floating numbers up to 3 decimal places and convert it to string.

Remove a new line from a string

In this program, we will take a string as input and remove a new line from a string.

Steps to solve the program

Take a string as input.
Remove the new line from the string using strip().
Print the output.

				
					#Input string
string1= "objectorientedprogramming\n"

#Printing output
print(string1.rstrip())

Output :

				
					objectorientedprogramming

convert all the characters in a string to Upper Case.

split and join a string

Convert all characters to Uppercase in a string.

In this program, we will take a string as input and convert all characters to Uppercase in a string

Steps to solve the program

Take a string as input.
Convert all characters of the given string to Uppercase using Upper().
Print the output.

				
					#Input string
string1 = "I live in pune"

#Printing output
print(string1.upper())

Output :

				
					I LIVE IN PUNE

exchange the first and last letters of the string

remove a new line from a string in a python.

Exchange first & last letters of the string

In this program, we will take a string as input and exchange first & last letters of the string

Steps to solve the program

Take a string as input.
Exchange the first and last letters of the string using Indexing.
Print the output.

				
					#Input string
string1= "We are learning python"

#Printing output
print(string1[-1]+string1[1:-1]+string1[0])

Output :

				
					ne are learning pythoW

check if a string has a special character or not

convert all the characters in a string to Upper Case.

Check if a string has special character or not

In this program, we will take a string as input and check if a string has special character or not.

Steps to solve the program

Take a string as input.
Create a string with all special characters as its value.
Create a count variable and assign its value equal to zero.
Use For loop to iterate over each character of the string.
If the character is in a string of special characters then add 1 to the count variable.
In the end, if the count variable is greater than 0 then the string has a special character.
Print the output.

				
					#Input strings
string = "python$$#sqatools"

#Special characters
s ='[@_!#$%^&*()<>?/\|}{~:]'
count = 0

for char in string:
    if char in s:
        count += 1
        
#Printing output
if count > 0:
    print("Given string has special characters")
else:
    print("‘Given string does not has special characters")

Output :

				
					Given string has special characters

remove all duplicate characters from a given string

exchange the first and last letters of the string

Remove all duplicate characters from a string

In this program, we will take a string as input and remove all duplicate characters from a string

Steps to solve the program

Take a string as input.
Import OrderedDict from collections to remove duplicate characters from a string.
Print the output.

				
					#Input string
string = "sqatools"

#Importing ordereddict
from collections import OrderedDict

#Printing output
"".join(OrderedDict.fromkeys(string))

Output :

				
					'sqatol'

print characters at odd places in a string.

check if a string has a special character or not

Print characters at odd places in a string.

In this program, we will take a string as input and print characters at odd places in a string.

Steps to solve the program

Take a string as input.
Use the range function to find the odd places from the length of the string.
Print only those characters at odd places in a string using Indexing.

				
					#Input string
string = "abcdefg"

for i in range(len(string)):
    if i%2 != 0:
    #Printing output
        print(string[i],end="")

Output :

bdf

count the number of consonants in a string.

remove all duplicate characters from a given string

Count the number of consonants in a string.

In this program, we will take a string as input and count the number of consonants in a string.

Steps to solve the program

Take a string as input.
Create a list containing all the vowels and a count variable and assign its value equal to zero.
Use For loop to iterate over each character of the string.
If the character is not in the vowels list add 1 to the count variable.
Print the output.

				
					#Input string
string = "sqltools"
vowel = ["a","e","i","o","u","A","E","I","O","U"]
count = 0

for char in string:
    if char not in vowel:
        count += 1

#Printing output
print("Number of consonants: ",count)

Output :

				
					Number of consonants:  6

count the number of vowels in a string.

print characters at odd places in a string.

Count the number of vowels in a string

In this program, we will take a string as input and count the number of vowels in a string.

Steps to solve the program

Take a string as input.
Create a list containing all the vowels and a count variable and assign its value equal to zero.
Use For loop to iterate over each character of the string.
If the character is a vowel add 1 to the count variable.
Print the output.

				
					#Input string
string = "I am learning python"
vowel = "aeiou"
count=0

for char in string:
    if char.lower() in vowel:
        count += 1
        
#Printing output
print("Number of vowels: ",count)

Output :

				
					Number of vowels:  6

check if a string has a number or not.

count the number of consonants in a string.