matplotlib
diff --git a/‎lib/matplotlib/tests/test_colors.py
Copy file name to clipboardExpand all lines: lib/matplotlib/tests/test_colors.py
+12Lines changed: 12 additions & 0 deletions b/‎lib/matplotlib/tests/test_colors.py
Copy file name to clipboardExpand all lines: lib/matplotlib/tests/test_colors.py
+12Lines changed: 12 additions & 0 deletions
diff --git a/‎lib/matplotlib/ticker.py
Copy file name to clipboardExpand all lines: lib/matplotlib/ticker.py
+4-1Lines changed: 4 additions & 1 deletion b/‎lib/matplotlib/ticker.py
Copy file name to clipboardExpand all lines: lib/matplotlib/ticker.py
+4-1Lines changed: 4 additions & 1 deletion
@@ -247,6 +247,18 @@ def test_SymLogNorm_colorbar():
     plt.close(fig)
 
 
+def test_SymLogNorm_single_zero():
+    """
+    Test SymLogNorm to ensure it is not adding sub-ticks to zero label
+    """
+    fig = plt.figure()
+    norm = mcolors.SymLogNorm(1e-5, vmin=-1, vmax=1)
+    cbar = mcolorbar.ColorbarBase(fig.add_subplot(111), norm=norm)
+    ticks = cbar.get_ticks()
+    assert sum(ticks == 0) == 1
+    plt.close(fig)
+
+
 def _inverse_tester(norm_instance, vals):
     """
     Checks if the inverse of the given normalization is working.
 
@@ -2346,7 +2346,10 @@ def get_log_range(lo, hi):
         if len(subs) > 1 or subs[0] != 1.0:
             ticklocs = []
             for decade in decades:
-                ticklocs.extend(subs * decade)
+                if decade == 0:
+                    ticklocs.append(decade)
+                else:
+                    ticklocs.extend(subs * decade)
         else:
             ticklocs = decades