Dear ROOT experts

I am trying to fit the a/x function in Python to the following histogram:

```
import ROOT
%jsroot on
h_sharers = ROOT.TH1F("Sharers","Sharers; Shares; Amount",102, 1, 103)
for i in sorted_shared_dict:
h_sharers.Fill(i[1])
c = ROOT.TCanvas()
h_sharers.SetFillColor(ROOT.kBlue-10)
c.SetGrid()
h_sharers.Draw()
c.Draw()
```

Tried to do the e^-x, as this is the predefined function in the ROOT library, but found it hard to define my own fit for a/x. Do you have an idea how to do it (in Python, as I lack C/C++ skills)?

Many thanks in advance !