diff --git a/prolif/fingerprint.py b/prolif/fingerprint.py
index 61758a1..e51c232 100644
--- a/prolif/fingerprint.py
+++ b/prolif/fingerprint.py
@@ -190,9 +190,6 @@ def __init__(
         count=False,
         vicinity_cutoff=6.0,
     ):
-        self.count = count
-        self._set_interactions(interactions, parameters)
-        self.vicinity_cutoff = vicinity_cutoff
         if interactions is None:
             interactions = [
                 "Hydrophobic",
@@ -206,6 +203,9 @@ def __init__(
                 "VdWContact",
             ]
         self.interactions = interactions
+        self.count = count
+        self._set_interactions(interactions, parameters)
+        self.vicinity_cutoff = vicinity_cutoff
 
     def _set_interactions(self, interactions, parameters):
         # read interactions to compute
diff --git a/prolif/plotting/network.py b/prolif/plotting/network.py
index d5cad1c..c31ebc4 100644
--- a/prolif/plotting/network.py
+++ b/prolif/plotting/network.py
@@ -817,13 +817,12 @@ def _get_legend(self, height="90px"):
     def display(self, **kwargs):
         """Prepare and display the network"""
         html = self._get_html(**kwargs)
+        doc = escape(html)
         iframe = (
-            '<iframe id="{uuid}" width="{width}" height="{height}" frameborder="0" '
-            'srcdoc="{doc}"></iframe>'
-        )
-        return HTML(
-            iframe.format(width=self.width, height=self.height, doc=escape(html)),
+            f'<iframe id="{self.uuid}" width="{self.width}" height="{self.height}"'
+            f' frameborder="0" srcdoc="{doc}"></iframe>'
         )
+        return HTML(iframe)
 
     @requires("IPython.display")
     def show(self, filename, **kwargs):
@@ -832,12 +831,10 @@ def show(self, filename, **kwargs):
         with open(filename, "w") as f:
             f.write(html)
         iframe = (
-            '<iframe id="{uuid}" width="{width}" height="{height}" frameborder="0" '
-            'src="{filename}"></iframe>'  # noqa: RUF027
-        )
-        return HTML(
-            iframe.format(width=self.width, height=self.height, filename=filename),
+            f'<iframe id="{self.uuid}" width="{self.width}" height="{self.height}"'
+            f' frameborder="0" src="{filename}"></iframe>'
         )
+        return HTML(iframe)
 
     def save(self, fp, **kwargs):
         """Save the network to an HTML file