> 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/value/call/call.get_function.md).

# Call.get\_function()

`get_function() →` [`Function`](/glider-ide/api/function.md) `| NoneObject`

The function will return the [Function](/glider-ide/api/function.md) object of the function being called, as there can be cases (such as low-level external calls, or solidity built-in calls) where there is no defined function the function will return NoneObject:

For example, in the call:

```solidity
require(balanceOf(to) + amount <= _maxWalletSize, "Exceeds the limit")
```

The if the function is used on the call representing the `require(...)`, NoneObject will be returned, as there is no solidity code representing the builtin function.

On the other hand if the function is called on the call representing `balanceOf(to)` it will return the [Function](/glider-ide/api/function.md) object of the `balanceOf`.

{% hint style="info" %}
Note that for the external calls made using interfaces, the function will return the interface Function object.

For the call:

```solidity
IUniswapV2Factory(factory).createPair(address(this),uniswapV2Router.WETH())
```

it will return a function object representing the `IUniswapV2Factory` interface's `createPair` function
{% endhint %}

## **Query Example**

```python
from glider import *

def query():
  instructions = (
    Instructions()
    .calls()
    .exec(10, 80)
    .filter(lambda instruction : instruction.get_parent().name in "slippedDailyRate")
  )

  results = []
  for instruction in instructions:
    for call in instruction.get_components():
      if isinstance(call, Call):
        if not isinstance(call.get_function(), NoneObject):
          print(call.expression)
          print(instruction.get_parent().get_contract().address())
          results.append(call.get_function())
          break
        else:
          print('no function object: ' + call.signature)
    break
  return results
```

## **Example Output**

<figure><img src="/files/RVpFSnk0T0j84nnNzoQn" alt=""><figcaption></figcaption></figure>

### The function was called from the `slippedDailyRate()` function:

<figure><img src="/files/TSjJBUPDuZDPiuUfhXXl" alt=""><figcaption></figcaption></figure>