Python | Remove spaces from a string

Given a string, write a Python program to remove all spaces from it.

Examples:

Input  : g e e k
Output : geek

Input  : Hello World
Output : HelloWorld

There are various approaches to removing whitespaces in a string. The first one is the Naive approach, which has been discussed in this article. But here we will discuss all the approaches which are specific to Python.

Method 1: Remove spaces from a string using replace() function

Python3

# Python3 code to remove whitespace
def remove(string):
    return string.replace(" ", "")

# Driver Program
string = ' g e e k '
print(remove(string))

Output

geek

Method 2: Remove spaces from a string using split() and join() 

First, we use the split() function to return a list of the words in the string, using sep as the delimiter Python string. Then, we use join() to concatenate the iterable. 

Python3

# Python3 code to remove whitespace
def remove(string):
    return "".join(string.split())

# Driver Program
string = ' g e e k '
print(remove(string))

Output

geek

Method 3: Remove spaces from a string using Python regex 

In order to find a string or group of strings, a Regular Expression (RegEx) is a unique string of characters. It may compare a text to a pattern to determine whether it is present or absent. It can also divide a pattern into one or more sub-patterns.

Python3

# Python3 code to remove whitespace
import re

def remove(string):
    pattern = re.compile(r'\s+')
    return re.sub(pattern, '', string)

# Driver Program
string = ' g e e k '
print(remove(string))

Output

geek

Method 4: Remove spaces from a string using translate() 

translate() returns a string that is a modified string of givens string according to given translation mappings.

Python3

# Python code to remove whitespace
import string

def remove(string):
    return string.translate(None, ' \n\t\r')

# Driver Program
string = ' g e e k '
print(remove(string))

Output

geek

Method 5: Remove spaces from a string using reduce function and conditional statement

Reduce function iterate over the string and it joins to the element of string to result if it is not white space. 

Python3

# Python code to remove whitespace
#importing module
from functools import reduce

#Function to remove white space
def remove(string):
    return reduce(lambda x, y: (x+y) if (y != " ") else x, string, "");

# Driver Program
string = ' g e e k '
print(remove(string))

Output:

geek

Method 6: Remove spaces from a string using lstrip() function

The lstrip() creates a new string by either deleting whitespace from the string’s “left” side or its leading whitespace.

Python3

string = "www.geeksforgeeks.org www."

string_new = string.lstrip("w.")

print(string_new)

Output

geeksforgeeks.org www.

Method 7: Remove spaces from a string using rstrip() function

The rstrip() creates a new string by removing the trailing whitespace. Eliminating the white spaces from the string’s “right” side makes it simpler to recall.

Python3

string = "www.geeksforgeeks.org www."

string_new = string.rstrip("w.")

print(string_new)

Output

www.geeksforgeeks.org 

Method 8 : Using isspace() method

Python3

# Python3 code to remove whitespace
def remove(string):
    ns=""
    for i in string:
        if(not i.isspace()):
            ns+=i
    return ns
# Driver Program
string = ' g e e k '
print(remove(string))

Output

geek