> For the complete documentation index, see [llms.txt](https://docs.r.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.r.xyz/glider-ide/api/callables/callables.with_signature.md).
# Callables.with\_signature()
`with_signature(`*`signature: str`*`) →` [`Callables`](/glider-ide/api/callables.md)
Adds a filter to get callables that have the given signature. Returns a filtered [Callables](/glider-ide/api/callables.md) child object. This method can be called on all [Callables](/glider-ide/api/callables.md) child classes: [Functions](/glider-ide/api/functions.md) and [Modifiers](/glider-ide/api/modifiers.md).
To filter given a list of signatures, refer to [Callables.with\_signatures()](/glider-ide/api/callables/callables.with_signatures.md).
### Functions Example
```python
from glider import *
def query():
# Retrieve all functions with the signature `transferFrom(address,address,uint256)`
functions = Functions().with_signature("transferFrom(address,address,uint256)").exec(100)
# Return the first five functions
return functions[:5]
```
Output:
### Modifiers Example
```python
from glider import *
def query():
# Retrieve all the modifiers with the signature `nonReentrant()`
modifiers = Modifiers().with_signature("nonReentrant()").exec(100)
# Return the first five modifiers
return modifiers[:5]
```
Output:
