 Python String isdigit()

# Python String isdigit()

#### The isdigit() method returns True if all characters in a string are digits. If not, it returns False.

The syntax of `isdigit()` is

`string.isdigit()`

## isdigit() Parameters

The `isdigit()` doesn't take any parameters.

## Return Value from isdigit()

The `isdigit()` returns:

• True if all characters in the string are digits.
• False if at least one character is not a digit.

## Example 1: Working of isdigit()

``````s = "28212"
print(s.isdigit())

# contains alphabets and spaces
s = "Mo3 nicaG el l22er"
print(s.isdigit())``````

Output

```True
False
```

A digit is a character that has property value:

• `Numeric_Type = Digit`
• `Numeric_Type = Decimal`

In Python, superscript and subscripts (usually written using unicode) are also considered digit characters. Hence, if the string contains these characters along with decimal characters, `isdigit()` returns True.

The roman numerals, currency numerators and fractions (usually written using unicode) are considered numeric characters but not digits. The `isdigit()` returns False if the string contains these characters.

To check whether a character is a numeric character or not, you can use isnumeric() method.

## Example 2: String Containing digits and Numeric Characters

``````s = '23455'
print(s.isdigit())

#s = '²3455'
# subscript is a digit
s = '\u00B23455'
print(s.isdigit())

# s = '½'
# fraction is not a digit
s = '\u00BD'
print(s.isdigit())
``````

Output

```True
True
False```