# Python | Frequency of substring in given string

Finding a substring in a string has been dealt in many ways. But sometimes, we are just interested to know how many times a particular substring occurs in a string. Let’s discuss certain ways in which this task is performed.

Method #1 : Using `count()`
This is a quite straightforward method in which this task is performed. It simply counts the occurrence of substrings in a string that we pass as an argument.

 `# Python3 code to demonstrate working of ` `# Frequency of substring in string  ` `# Using count() ` ` `  `# initializing string  ` `test_str ``=` `"GeeksforGeeks is for Geeks"` ` `  `# initializing substring ` `test_sub ``=` `"Geeks"`  ` `  `# printing original string  ` `print``(``"The original string is : "` `+` `test_str) ` ` `  `# printing substring ` `print``(``"The original substring : "` `+` `test_sub) ` ` `  `# using count() ` `# Frequency of substring in string ` `res ``=` `test_str.count(test_sub) ` ` `  `# printing result  ` `print``(``"The frequency of substring in string is "` `+` `str``(res)) `

Output :

```The original string is : GeeksforGeeks is for Geeks
The original substring : Geeks
The frequency of substring in string is 3
```

Method #2 : Using `len() + split()`
The combination of above functions can be used to perform this task. This is performed in 2 steps, in 1st step, we split the string to list by the substring and then count the elements, which is 1 more than the required value.

 `# Python3 code to demonstrate working of ` `# Frequency of substring in string  ` `# Using split() + len() ` ` `  `# initializing string  ` `test_str ``=` `"GeeksforGeeks is for Geeks"` ` `  `# initializing substring ` `test_sub ``=` `"Geeks"`  ` `  `# printing original string  ` `print``(``"The original string is : "` `+` `test_str) ` ` `  `# printing substring ` `print``(``"The original substring : "` `+` `test_sub) ` ` `  `# using split() + len() ` `# Frequency of substring in string ` `res ``=` `len``(test_str.split(test_sub))``-``1` ` `  `# printing result  ` `print``(``"The frequency of substring in string is "` `+` `str``(res)) `

Output :

```The original string is : GeeksforGeeks is for Geeks
The original substring : Geeks
The frequency of substring in string is 3
```

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