--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/planemo/lib/python3.7/site-packages/networkx/readwrite/nx_yaml.py	Fri Jul 31 00:32:28 2020 -0400
@@ -0,0 +1,114 @@
+"""
+****
+YAML
+****
+Read and write NetworkX graphs in YAML format.
+
+"YAML is a data serialization format designed for human readability 
+and interaction with scripting languages."
+See http://www.yaml.org for documentation.
+
+Format
+------
+http://pyyaml.org/wiki/PyYAML
+
+"""
+__author__ = """Aric Hagberg (hagberg@lanl.gov)"""
+#    Copyright (C) 2004-2019 by
+#    Aric Hagberg <hagberg@lanl.gov>
+#    Dan Schult <dschult@colgate.edu>
+#    Pieter Swart <swart@lanl.gov>
+#    All rights reserved.
+#    BSD license.
+
+__all__ = ['read_yaml', 'write_yaml']
+
+import networkx as nx
+from networkx.utils import open_file
+
+
+@open_file(1, mode='w')
+def write_yaml(G_to_be_yaml, path_for_yaml_output, **kwds):
+    """Write graph G in YAML format to path. 
+
+    YAML is a data serialization format designed for human readability 
+    and interaction with scripting languages [1]_.
+
+    Parameters
+    ----------
+    G : graph
+       A NetworkX graph
+    path : file or string
+       File or filename to write. 
+       Filenames ending in .gz or .bz2 will be compressed.
+
+    Notes
+    -----
+    To use encoding on the output file include e.g. `encoding='utf-8'`
+    in the keyword arguments.
+
+    Examples
+    --------
+    >>> G=nx.path_graph(4)
+    >>> nx.write_yaml(G,'test.yaml')
+
+    References
+    ----------
+    .. [1] http://www.yaml.org
+    """
+    try:
+        import yaml
+    except ImportError:
+        raise ImportError("write_yaml() requires PyYAML: http://pyyaml.org/")
+    yaml.dump(G_to_be_yaml, path_for_yaml_output, **kwds)
+
+
+@open_file(0, mode='r')
+def read_yaml(path):
+    """Read graph in YAML format from path.
+
+    YAML is a data serialization format designed for human readability 
+    and interaction with scripting languages [1]_.
+
+    Parameters
+    ----------
+    path : file or string
+       File or filename to read.  Filenames ending in .gz or .bz2 
+       will be uncompressed.
+
+    Returns
+    -------
+    G : NetworkX graph
+
+    Examples
+    --------
+    >>> G=nx.path_graph(4)
+    >>> nx.write_yaml(G,'test.yaml')
+    >>> G=nx.read_yaml('test.yaml')
+
+    References
+    ----------
+    .. [1] http://www.yaml.org
+
+    """
+    try:
+        import yaml
+    except ImportError:
+        raise ImportError("read_yaml() requires PyYAML: http://pyyaml.org/")
+
+    G = yaml.load(path, Loader=yaml.FullLoader)
+    return G
+
+
+# fixture for pytest
+def setup_module(module):
+    try:
+        import yaml
+    except:
+        from pytest import skip
+        skip("PyYAML not available", allow_module_level=True)
+
+# fixture for pytest
+def teardown_module(module):
+    import os
+    os.unlink('test.yaml')