Python: Count occurrences of a substring in a string

Last update on March 21 2025 12:53:31 (UTC/GMT +8 hours)

Count substring occurrences in string.

Write a Python program to count occurrences of a substring in a string.

Sample Solution:

Python Code:

# Define a string 'str1' with a sentence.
str1 = 'The quick brown fox jumps over the lazy dog.'

# Print an empty line for spacing.
print()

# Count and print the number of occurrences of the substring "fox" in the string 'str1'.
print(str1.count("fox"))

# Print an empty line for spacing.
print() 

Sample Output:

1 

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to count the occurrences of a specified substring in a string using the str.count() method.
• Write a Python program to implement a function that iterates over a string and manually counts overlapping occurrences of a substring.
• Write a Python program to use regular expressions to find and count all instances of a substring in a given string.
• Write a Python program to count the frequency of a substring in a string recursively.

Python Code Editor:

Previous: Write a Python program to display a number in left, right and center aligned of width 10.
Next: Write a Python program to reverse a string.