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How to find the int value of a string in Python?
• Difficulty Level : Medium
• Last Updated : 01 Aug, 2020

In Python, we can represent an integer value in the form of string. Int value of a string can be obtained by using inbuilt function in python called as `int()`. Here we can pass string as argument to this function which returns int value of a string.

## int()

Syntax : int(string, base)
Parameters :

• string : consists of 1’s and 0’s
• base : (integer value) base of the number.

Returns : an integer value, which is equivalent of binary string in the given base.
TypeError : Returns TypeError when any data type other
than string or integer is passed in its equivalent position.

By default, `int()` assumes the number to be in decimal notation. If we want a string representation of `int `which belongs to other number systems like binary, hexadecimal, octal. We need to pass an extra argument to this function specifying the base value. The base values are :

• binary : 2
• octal : 8
• hexadecimal : 16

Examples :

```Input : "A"  (for base 16)
Output : 10

Input : "510"
Output : 510
```
 `# using base 16``s1 ``=` `"A"``print``(``int``(s1, ``16``))`` ` `# using the default base``s2 ``=` `"510"``print``(``int``(s2))`

Output :

```10
510
```

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