Fix docs and closeness checking

dstansby · dstansby · commit 8c211c9eee70 · 2019-02-24T11:33:04.000Z
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
@@ -915,7 +915,7 @@ def axline(self, xy1, xy2, **kwargs):
 
         Parameters
         ----------
-        xy1, xy2 : length 2 iterables
+        xy1, xy2 : (float, float)
             Points for the line to pass through.
 
         Returns
@@ -956,7 +956,7 @@ def axline(self, xy1, xy2, **kwargs):
         x1, y1 = xy1
         x2, y2 = xy2
         # If x values the same, we have a vertical line
-        if x1 == x2:
+        if np.allclose(x1, x2):
             line = self.axvline(x1, **kwargs)
             return line
 
