diff --git a/chartify/__init__.py b/chartify/__init__.py
index 89f882a..a58d14e 100644
--- a/chartify/__init__.py
+++ b/chartify/__init__.py
@@ -32,14 +32,18 @@ def set_display_settings():
     from ipykernel.zmqshell import ZMQInteractiveShell
     from bokeh.io import output_notebook
     from bokeh.resources import Resources
+    from bokeh.io.state import curstate
 
     ipython_instance = get_ipython()
     if ipython_instance is not None:
         if isinstance(ipython_instance, ZMQInteractiveShell):
             _IPYTHON_INSTANCE = True
-            # Inline resources uses bokeh.js from the local version.
-            # This enables offline usage.
-            output_notebook(Resources('inline'))
+            # Defer to previous call to ``output_notebook`` so that users
+            # can specify their own notebook type and Bokeh resources
+            if curstate().notebook_type is None:
+                # Inline resources uses bokeh.js from the local version.
+                # This enables offline usage.
+                output_notebook(Resources('inline'), hide_banner=True)
 
 
 set_display_settings()
diff --git a/chartify/_core/plot.py b/chartify/_core/plot.py
index cca1ffa..05e0196 100644
--- a/chartify/_core/plot.py
+++ b/chartify/_core/plot.py
@@ -37,11 +37,8 @@ def __init__(self, chart, y_range_name="default"):
     @staticmethod
     def _axis_format_precision(max_value, min_value):
         difference = abs(max_value - min_value)
-        if difference:
-            precision = abs(int(np.floor(np.log10(difference)))) + 1
-        else:
-            precision = 1
-        print(precision)
+        precision = abs(int(np.floor(
+            np.log10(difference if difference else 1)))) + 1
         zeros = ''.join(['0']*precision)
         return "0,0.[{}]".format(zeros)
 
diff --git a/tests/test_plots.py b/tests/test_plots.py
index 63b3dec..b50b792 100644
--- a/tests/test_plots.py
+++ b/tests/test_plots.py
@@ -491,6 +491,7 @@ class TestAxisFormatPrecision:
 
     def setup(self):
         self.tests = {
+            (0, 0): "0,0.[0]",
             (0, 0.004): "0,0.[0000]",
             (0, 0.04): "0,0.[000]",
             (0, 0.4): "0,0.[00]",