CSCD01-team31
diff --git a/‎lib/matplotlib/axes/_axes.py
Lines changed: 4 additions & 4 deletions b/‎lib/matplotlib/axes/_axes.py
Lines changed: 4 additions & 4 deletions
diff --git a/‎lib/matplotlib/pyplot.py
Lines changed: 4 additions & 4 deletions b/‎lib/matplotlib/pyplot.py
Lines changed: 4 additions & 4 deletions
diff --git a/‎lib/matplotlib/tests/test_axes.py
Lines changed: 14 additions & 2 deletions b/‎lib/matplotlib/tests/test_axes.py
Lines changed: 14 additions & 2 deletions
@@ -1102,8 +1102,8 @@ def axvspan(self, xmin, xmax, ymin=0, ymax=1, **kwargs):
 
     @_preprocess_data(replace_names=["y", "xmin", "xmax", "colors"],
                       label_namer="y")
-    def hlines(self, y, xmin, xmax, colors='k', linestyles='solid',
-               label='', **kwargs):
+    def hlines(self, y, xmin, xmax, colors=rcParams['lines.color'] or 'k',
+               linestyles='solid', label='', **kwargs):
         """
         Plot horizontal lines at each *y* from *xmin* to *xmax*.
 
@@ -1182,8 +1182,8 @@ def hlines(self, y, xmin, xmax, colors='k', linestyles='solid',
 
     @_preprocess_data(replace_names=["x", "ymin", "ymax", "colors"],
                       label_namer="x")
-    def vlines(self, x, ymin, ymax, colors='k', linestyles='solid',
-               label='', **kwargs):
+    def vlines(self, x, ymin, ymax, colors=rcParams['lines.color'] or 'k',
+               linestyles='solid', label='', **kwargs):
         """
         Plot vertical lines.
 
 
@@ -2533,8 +2533,8 @@ def hist2d(
 # Autogenerated by boilerplate.py.  Do not edit as changes will be lost.
 @_copy_docstring_and_deprecators(Axes.hlines)
 def hlines(
-        y, xmin, xmax, colors='k', linestyles='solid', label='', *,
-        data=None, **kwargs):
+        y, xmin, xmax, colors=rcParams['lines.color'] or 'k',
+        linestyles='solid', label='', *, data=None, **kwargs):
     return gca().hlines(
         y, xmin, xmax, colors=colors, linestyles=linestyles,
         label=label, **({"data": data} if data is not None else {}),
@@ -2904,8 +2904,8 @@ def violinplot(
 # Autogenerated by boilerplate.py.  Do not edit as changes will be lost.
 def vlines(
-        x, ymin, ymax, colors='k', linestyles='solid', label='', *,
-        data=None, **kwargs):
+        x, ymin, ymax, colors=rcParams['lines.color'] or 'k',
+        linestyles='solid', label='', *, data=None, **kwargs):
     return gca().vlines(
         x, ymin, ymax, colors=colors, linestyles=linestyles,
         label=label, **({"data": data} if data is not None else {}),
 
@@ -3963,7 +3963,7 @@ def test_axline_args():
         ax.axline((0, 0), slope=1)
 
 
-@image_comparison(['vlines_basic', 'vlines_with_nan', 'vlines_masked'],
+@image_comparison(['vlines_basic', 'vlines_with_nan', 'vlines_masked', 'vlines_rc_params'],
                   extensions=['png'])
 def test_vlines():
     # normal
@@ -4002,8 +4002,14 @@ def test_vlines():
     ax5.vlines(x5, ymin5, ymax5, colors='k', linewidth=2)
     ax5.set_xlim(0, 15)
 
+    # check that vlines() correctly defaults to rcParams['lines.color']
+    fig4, ax6 = plt.subplots()
+    with mpl.rc_context({'lines.color': 'blue'}):
+        ax6.vlines(0.5, 0, 1)
+        ax6.hlines(0.5, 0, 1, colors='k')
 
-@image_comparison(['hlines_basic', 'hlines_with_nan', 'hlines_masked'],
+
+@image_comparison(['hlines_basic', 'hlines_with_nan', 'hlines_masked', 'hlines_rc_params'],
                   extensions=['png'])
 def test_hlines():
     # normal
@@ -4042,6 +4048,12 @@ def test_hlines():
     ax5.hlines(y5, xmin5, xmax5, colors='k', linewidth=2)
     ax5.set_ylim(0, 15)
 
+    # check that hlines() correctly defaults to rcParams['lines.color']
+    fig4, ax6 = plt.subplots()
+    with mpl.rc_context({'lines.color': 'blue'}):
+        ax6.hlines(0.5, 0, 1)
+        ax6.vlines(0.5, 0, 1, colors='k')
+
 
 @pytest.mark.parametrize('data', [[1, 2, 3, np.nan, 5],
                                   np.ma.masked_equal([1, 2, 3, 4, 5], 4)])