Amazon Redshift will no longer support the creation of new Python UDFs starting Patch 198. Existing Python UDFs will continue to function until June 30, 2026. For more information, see the [ blog post ](https://aws.amazon.com/blogs/big-data/amazon-redshift-python-user-defined-functions-will-reach-end-of-support-after-june-30-2026/). 

# Integer and floating-point literals
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Literals or constants that represent numbers can be integer or floating-point.

## Integer literals
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An integer constant is a sequence of the digits 0-9, with an optional positive (\$1) or negative (-) sign preceding the digits.

## Syntax
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```
[ + | - ] digit ...
```

## Examples
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Valid integers include the following:

```
23
-555
+17
```

## Floating-point literals
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Floating-point literals (also referred to as decimal, numeric, or fractional literals) are sequences of digits that can include a decimal point, and optionally the exponent marker (e).

## Syntax
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```
[ + | - ] digit ... [ . ] [ digit ...]
[ e | E [ + | - ] digit ... ]
```

## Arguments
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e \$1 E  
e or E indicates that the number is specified in scientific notation.

## Examples
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Valid floating-point literals include the following:

```
3.14159
-37.
2.0e19
-2E-19
```