use single quote

muchojp · muchojp · commit 6d6da093aaec · 2024-06-04T15:04:57.000Z
diff --git a/lib/matplotlib/tests/test_quiver.py b/lib/matplotlib/tests/test_quiver.py
@@ -349,14 +349,14 @@ def draw_quiverkey_zorder_argument(fig, zorder=None):
     ax.set_ylim(0.5, 5.5)
     if zorder is None:
         ax.quiverkey(q, 4, 4, 25,
-                          coordinates='data', label="U", color="blue")
+                          coordinates='data', label='U', color='blue')
         ax.quiverkey(q, 5.5, 2, 20,
-                          coordinates='data', label="V", color="blue", angle=90)
+                          coordinates='data', label='V', color='blue', angle=90)
     else:
         ax.quiverkey(q, 4, 4, 25,
-                          coordinates='data', label="U", color="blue", zorder=zorder)
+                          coordinates='data', label='U', color='blue', zorder=zorder)
         ax.quiverkey(q, 5.5, 2, 20,
-                          coordinates='data', label="V", color="blue", angle=90, zorder=zorder)
+                          coordinates='data', label='V', color='blue', angle=90, zorder=zorder)
 
 
 def draw_quiverkey_setzorder(fig, zorder=None):
@@ -371,9 +371,9 @@ def draw_quiverkey_setzorder(fig, zorder=None):
     ax.set_xlim(0.5, 5.5)
     ax.set_ylim(0.5, 5.5)
     qk1 = ax.quiverkey(q, 4, 4, 25,
-                       coordinates='data', label="U", color="blue")
+                       coordinates='data', label='U', color='blue')
     qk2 = ax.quiverkey(q, 5.5, 2, 20,
-                       coordinates='data', label="V", color="blue", angle=90)
+                       coordinates='data', label='V', color='blue', angle=90)
     if zorder is not None:
         qk1.set_zorder(zorder)
         qk2.set_zorder(zorder)
