Python program to count the number of spaces in string

In Python, there are various ways to Count the number of spaces in a String.

Using count() Method

count() method in Python is used to return the number of occurrences of a specified element in a list or string

s = "Count the spaces in this string."

# Count spaces using the count() method
space_count = s.count(" ")


print(space_count)

5

Explanation

• The count(" ") method counts how many spaces (" ") are present in the s, which in this case is "Count the spaces in this string.".
• The result, stored in space_count, is printed, showing the total number of spaces found in the string.

Let's understand various other methods to count the number of spaces in a string.

Using for Loop

Using a for loop with a conditional check allows us to iterate through a string or list and perform an action based on a specific condition, such as counting occurrences of a particular character

s = "Count the spaces in this string."

# Initialize space counter
space_count = 0

# Loop through each character in the string
for char in s:
    # Check if the character is a space
    if char == " ":
        # Increment space count
        space_count += 1


print(space_count)

5

Explanation

• The for loop iterates through each character in the s, and the conditional check (if char == " ") determines if the character is a space.
• If a space is found, the space_count is incremented, and the total number of spaces is printed after the loop finishes.

Using split()

split() method in Python splits a string into a list of substrings based on a specified delimiter, which can be used to count spaces by calculating the difference between the total number of words and one.

s = "Count the spaces in this string."

# Split the string by spaces and count the spaces
space_count = len(s.split()) - 1

print(space_count)

5

Explanation

• split() method divides the s into a list of words by spaces, and len() calculates the length of this list, representing the total number of words.
• By subtracting 1 from the word count, we get the number of spaces, since the number of spaces is always one less than the number of words.

Using re.findall()

re.findall() function with regular expressions allows us to find all occurrences of a specific pattern, such as spaces, and count them by measuring the length of the resulting list.

# Import the regular expression module
import re

# Input string
s = "Count the spaces in this string."

# Use re.findall() to find all spaces
space_count = len(re.findall(" ", s))

# Print the number of spaces
print(space_count)

5

Explanation

• The re.findall(" ", s) function searches for all occurrences of spaces in the s and returns a list of all spaces found.
• The len() function then calculates the number of spaces by measuring the length of this list, which is printed as the result.