May 13, 2023 · May 12, 2023
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
                x0 = cbook._safe_first_finite(x0)
            except (TypeError, IndexError, KeyError):
                pass
            except StopIteration:
                # this means we found no finite element, fall back to first
                # element unconditionally
                x0 = cbook.safe_first_element(x0)

            try:
                x = cbook._safe_first_finite(xconv)
            except (TypeError, IndexError, KeyError):
                x = xconv
            except StopIteration:
                # this means we found no finite element, fall back to first
                # element unconditionally
                x = cbook.safe_first_element(xconv)

            delist = False
            if not np.iterable(dx):
diff --git a/lib/matplotlib/cbook/__init__.py b/lib/matplotlib/cbook/__init__.py

 def _safe_first_finite(obj, *, skip_nonfinite=True):
    """
    Return the first non-None (and optionally finite) element in *obj*.
    Return the first finite element in *obj* if one is available and skip_nonfinite is
    True. Otherwise return the first element.

    This is a method for internal use.

    This is a type-independent way of obtaining the first non-None element,
    supporting both index access and the iterator protocol.
    The first non-None element will be obtained when skip_none is True.
    This is a type-independent way of obtaining the first finite element, supporting
    both index access and the iterator protocol.
    """
    def safe_isfinite(val):
        if val is None:
        raise RuntimeError("matplotlib does not "
                           "support generators as input")
    else:
        return next(val for val in obj if safe_isfinite(val))
        return next((val for val in obj if safe_isfinite(val)), safe_first_element(obj))


 def sanitize_sequence(data):
diff --git a/lib/matplotlib/tests/test_cbook.py b/lib/matplotlib/tests/test_cbook.py
    assert 1 == next(it)


 def test__safe_first_finite_all_nan():
    arr = np.full(2, np.nan)
    ret = cbook._safe_first_finite(arr)
    assert np.isnan(ret)


 def test__safe_first_finite_all_inf():
    arr = np.full(2, np.inf)
    ret = cbook._safe_first_finite(arr)
    assert np.isinf(ret)


 def test_reshape2d():

    class Dummy:
Original file line number	Diff line number	Diff line change
Expand Up		@@ -2208,19 +2208,11 @@ def _convert_dx(dx, x0, xconv, convert):
		x0 = cbook._safe_first_finite(x0)
		except (TypeError, IndexError, KeyError):
		pass
		except StopIteration:
		# this means we found no finite element, fall back to first
		# element unconditionally
		x0 = cbook.safe_first_element(x0)

		try:
		x = cbook._safe_first_finite(xconv)
		except (TypeError, IndexError, KeyError):
		x = xconv
		except StopIteration:
		# this means we found no finite element, fall back to first
		# element unconditionally
		x = cbook.safe_first_element(xconv)

		delist = False
		if not np.iterable(dx):
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -1676,13 +1676,13 @@ def safe_first_element(obj):

		def _safe_first_finite(obj, *, skip_nonfinite=True):
		"""
		Return the first non-None (and optionally finite) element in obj.
		Return the first finite element in obj if one is available and skip_nonfinite is
		True. Otherwise return the first element.

		This is a method for internal use.

		This is a type-independent way of obtaining the first non-None element,
		supporting both index access and the iterator protocol.
		The first non-None element will be obtained when skip_none is True.
		This is a type-independent way of obtaining the first finite element, supporting
		both index access and the iterator protocol.
		"""
		def safe_isfinite(val):
		if val is None:
Expand DownExpand Up		@@ -1714,7 +1714,7 @@ def safe_isfinite(val):
		raise RuntimeError("matplotlib does not "
		"support generators as input")
		else:
		return next(val for val in obj if safe_isfinite(val))
		return next((val for val in obj if safe_isfinite(val)), safe_first_element(obj))


		def sanitize_sequence(data):
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -609,6 +609,18 @@ def test_flatiter():
		assert 1 == next(it)


		def test__safe_first_finite_all_nan():
		arr = np.full(2, np.nan)
		ret = cbook._safe_first_finite(arr)
		assert np.isnan(ret)


		def test__safe_first_finite_all_inf():
		arr = np.full(2, np.inf)
		ret = cbook._safe_first_finite(arr)
		assert np.isinf(ret)


		def test_reshape2d():

		class Dummy:
Expand Down