--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/planemo/lib/python3.7/site-packages/virtualenv/util/six.py	Fri Jul 31 00:32:28 2020 -0400
@@ -0,0 +1,50 @@
+"""Backward compatibility layer with older version of six.
+
+This is used to avoid virtualenv requring a version of six newer than what
+the system may have.
+"""
+from __future__ import absolute_import
+
+from six import PY2, PY3, binary_type, text_type
+
+try:
+    from six import ensure_text
+except ImportError:
+
+    def ensure_text(s, encoding="utf-8", errors="strict"):
+        """Coerce *s* to six.text_type.
+        For Python 2:
+        - `unicode` -> `unicode`
+        - `str` -> `unicode`
+        For Python 3:
+        - `str` -> `str`
+        - `bytes` -> decoded to `str`
+        """
+        if isinstance(s, binary_type):
+            return s.decode(encoding, errors)
+        elif isinstance(s, text_type):
+            return s
+        else:
+            raise TypeError("not expecting type '%s'" % type(s))
+
+
+try:
+    from six import ensure_str
+except ImportError:
+
+    def ensure_str(s, encoding="utf-8", errors="strict"):
+        """Coerce *s* to `str`.
+        For Python 2:
+        - `unicode` -> encoded to `str`
+        - `str` -> `str`
+        For Python 3:
+        - `str` -> `str`
+        - `bytes` -> decoded to `str`
+        """
+        if not isinstance(s, (text_type, binary_type)):
+            raise TypeError("not expecting type '%s'" % type(s))
+        if PY2 and isinstance(s, text_type):
+            s = s.encode(encoding, errors)
+        elif PY3 and isinstance(s, binary_type):
+            s = s.decode(encoding, errors)
+        return s