Python provides various ways to remove white-spaces from a String. This article will focus of some of the efficient techniques to remove spaces from a String. Either of the following techniques can be used to get rid of the spaces from a string: The Key points: Example:strip[] methodreplace[] methodjoin[]with split[] methodtranslate[] methodRegular ExpressionsMethod 1: By using strip[] method
split[] function basically removes the leading and the trailing spaces of the string.string = ' Safa Mulani is a student of Engineering Discipline. '
print[f'String =\'{string}\'']
print[f'After Removing Leading Whitespaces String =\'{string.lstrip[]}\'']
print[f'After Removing Trailing Whitespaces String =\'{string.rstrip[]}\'']
print[f'After Trimming Whitespaces String =\'{string.strip[]}\'']
Output:
Method 2: By using replace[] method
This function removes all the spaces from the string, removes spaces between words too.
Example:
def remove[string_input]:
return string_input.replace[" ", ""]
string_input = ' S a f a '
print[remove[string_input]]
Output:
Safa
Method 3: By using join[] and split[] method
The join[] and split[] function work in accordance altogether. Firstly, the split[] method returns a list of words in the entire string using a delimiter. Then we need to use the join[] method to concatenate them.
Example:
def remove[string_input]:
return "".join[string_input.split[]]
# Driver Program
string_input= ' S a f a '
print[remove[string_input]]
Output:
Safa
Method 4: By using translate[] method
In the above example, the translate[] function removes all of the white-spaces from the string and results in a compact string as output.
Method 5: By using Regular Expressions
The re.sub[] function is used to remove the white-spaces from a string.
import re string = ' Engineering and Medical are altogether different disciplines. \t\n Agreed!! ' print['String after removal of all the spaces using Regular Expressions:\n', re.sub[r"\s+", "", string], sep=''] print['String after removal of leading spaces using Regular Expressions:\n', re.sub[r"^\s+", "", string], sep=''] # ^ matches start print['String after removal of trailing spaces using Regular Expressions:\n', re.sub[r"\s+$", "", string], sep=''] # $ matches end print['String after removal of leading and trailing spaces using Regular Expressions:\n', re.sub[r"^\s+|\s+$", "", string], sep=''] # | for OR condition
Output:
Conclusion
Thus, in this article we have implemented various techniques to remove white-spaces from an input string in Python.
References
- Python Remove Spaces from String
- Python string functions Documentation
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
def remove[string]:
return string.replace[" ", ""]
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
def remove[string]:
return "".join[string.split[]]
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
import re
def remove[string]:
pattern = re.compile[r'\s+']
return re.sub[pattern, '', string]
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
import string
def remove[string]:
return string.translate[None, ' \n\t\r']
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
from functools import
reduce
def remove[string]:
return reduce[lambda x, y: [x+y] if [y != " "] else x, string, ""];
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
def remove[string]:
ns=""
for
i in string:
if[not i.isspace[]]:
ns+=i
return ns
string = ' g e e k '
print[remove[string]]