Remove old Appveyor cruft (#5924)

* Remove old Appveyor cruft

* Fix Windows issue

3 files changed, 4 insertions, 8 deletions

diff --git a/networkx/conftest.py b/networkx/conftest.py
index bfed3215..20e32e07 100644
--- a/networkx/conftest.py
+++ b/networkx/conftest.py
@@ -387,7 +387,3 @@ if not has_ogr:
     collect_ignore += needs_ogr
 if not has_sympy:
     collect_ignore += needs_sympy
-
-# FIXME:  This is to avoid errors on AppVeyor
-if sys.platform.startswith("win"):
-    collect_ignore += ["readwrite/graph6.py", "readwrite/sparse6.py"]
diff --git a/networkx/readwrite/graph6.py b/networkx/readwrite/graph6.py
index cb579ecd..140d9fa2 100644
--- a/networkx/readwrite/graph6.py
+++ b/networkx/readwrite/graph6.py
@@ -206,7 +206,7 @@ def read_graph6(path):
     You can read a graph6 file by giving the path to the file::
 
         >>> import tempfile
-        >>> with tempfile.NamedTemporaryFile() as f:
+        >>> with tempfile.NamedTemporaryFile(delete=False) as f:
         ...     _ = f.write(b">>graph6<<A_\\n")
         ...     _ = f.seek(0)
         ...     G = nx.read_graph6(f.name)
@@ -279,7 +279,7 @@ def write_graph6(G, path, nodes=None, header=True):
     You can write a graph6 file by giving the path to a file::
 
         >>> import tempfile
-        >>> with tempfile.NamedTemporaryFile() as f:
+        >>> with tempfile.NamedTemporaryFile(delete=False) as f:
         ...     nx.write_graph6(nx.path_graph(2), f.name)
         ...     _ = f.seek(0)
         ...     print(f.read())
diff --git a/networkx/readwrite/sparse6.py b/networkx/readwrite/sparse6.py
index e7c36383..beae8acb 100644
--- a/networkx/readwrite/sparse6.py
+++ b/networkx/readwrite/sparse6.py
@@ -272,7 +272,7 @@ def read_sparse6(path):
     You can read a sparse6 file by giving the path to the file::
 
         >>> import tempfile
-        >>> with tempfile.NamedTemporaryFile() as f:
+        >>> with tempfile.NamedTemporaryFile(delete=False) as f:
         ...     _ = f.write(b">>sparse6<<:An\\n")
         ...     _ = f.seek(0)
         ...     G = nx.read_sparse6(f.name)
@@ -340,7 +340,7 @@ def write_sparse6(G, path, nodes=None, header=True):
     You can write a sparse6 file by giving the path to the file::
 
         >>> import tempfile
-        >>> with tempfile.NamedTemporaryFile() as f:
+        >>> with tempfile.NamedTemporaryFile(delete=False) as f:
         ...     nx.write_sparse6(nx.path_graph(2), f.name)
         ...     print(f.read())
         b'>>sparse6<<:An\\n'