From 15f66ed50af45b140cceb7d20070d8e9968a3a20 Mon Sep 17 00:00:00 2001
From: Olek <45364492+yardasol@users.noreply.github.com>
Date: Wed, 3 Aug 2022 17:46:26 -0500
Subject: [PATCH] Minor styling fix in `Material.py`

change `E` to `e` for scientific notation.
---
 openmc/material.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/openmc/material.py b/openmc/material.py
index 6c26416801..913d53d9db 100644
--- a/openmc/material.py
+++ b/openmc/material.py
@@ -861,7 +861,7 @@ class Material(IDManagerMixin):
         elif self.density_units == 'atom/b-cm':
             density = self.density
         elif self.density_units == 'atom/cm3' or self.density_units == 'atom/cc':
-            density = 1.E-24 * self.density
+            density = 1.e-24 * self.density
 
         # For ease of processing split out nuc, nuc_density,
         # and nuc_density_type into separate arrays
@@ -897,7 +897,7 @@ class Material(IDManagerMixin):
 
         # Convert the mass density to an atom density
         if not density_in_atom:
-            density = -density / self.average_molar_mass * 1.E-24 \
+            density = -density / self.average_molar_mass * 1.e-24 \
                       * openmc.data.AVOGADRO
 
         nuc_densities = density * nuc_densities