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Python – Test if Kth character is digit in String
• Last Updated : 14 May, 2021

Given a String, check if Kth index is a digit.

Input : test_str = ‘geeks9geeks’, K = 5
Output : True
Explanation : 5th idx element is 9, a digit, hence True.
Input : test_str = ‘geeks9geeks’, K = 4
Output : False
Explanation : 4th idx element is s, not a digit, hence False.

Method #1 : Using in operator

In this, we create a string of numerics and then use in operator to check if Kth digit lies in that numeric string.

## Python3

 `# Python3 code to demonstrate working of``# Test if Kth character is digit in String``# Using in operator` `# initializing string``test_str ``=` `'geeks4geeks'` `# printing original String``print``(``"The original string is : "` `+` `str``(test_str))` `# initializing K``K ``=` `5` `# checking if Kth digit is string``# getting numeric str``num_str ``=` `"0123456789"``res ``=` `test_str[K] ``in` `num_str` `# printing result``print``(``"Is Kth element String : "` `+` `str``(res))`
Output

```The original string is : geeks4geeks
Is Kth element String : True```

Method #2 : Using isdigit()

In this, we use inbuilt Py. function to solve this problem, and check if Kth element is digit.

## Python3

 `# Python3 code to demonstrate working of``# Test if Kth character is digit in String``# Using isdigit()` `# initializing string``test_str ``=` `'geeks4geeks'` `# printing original String``print``(``"The original string is : "` `+` `str``(test_str))` `# initializing K``K ``=` `5` `# isdigit checks for digit``res ``=` `test_str[K].isdigit()` `# printing result``print``(``"Is Kth element String : "` `+` `str``(res))`
Output
```The original string is : geeks4geeks
Is Kth element String : True```

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